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Cisco Catalyst 6807-XL Modular Switch Overview

January 19 2015 , Written by Cisco & Cisco Router, Network Switch Published on #Cisco Switches - Cisco Firewall

Cisco Catalyst 6800 Series Switch was introduced by Cisco for the next-generation campus. It is built on the rich DNA of the Cisco Catalyst 6500 Series Switch and provides high levels of scalability and performance. The Cisco 6800 Series provides unprecedented investment protection for migrations and upgrades from the Cisco Catalyst 6500-E Series Switch.

Evolution of Cisco Catalyst 6000 Series

Evolution-of-Cisco-Catalyst-6000-Series-.jpg

The Cisco 6800 Series Switch has been designed to meet the requirements of the next-generation enterprise network and to simplify the deployment of emerging  trends such as bring your own device (BYOD), mobility, pervasive video, collaboration, and resiliency and the resulting challenges of scale, security, and management, making it the ideal switch for all campus backbone deployments.

The Cisco Catalyst 6800 Series Switch provides unprecedented investment protection by supporting the Cisco Catalyst 6500 Series Supervisor Engine 2T and its family of line cards and service modules. This backward compatibility coupled with the use of the same Cisco IOS Software operating system as used on the Cisco Catalyst 6500 Series Switch not only eases the burden of upgrades and migration but also reduces the total cost of ownership of the Cisco Catalyst 6800 Series Switch.

The Cisco Catalyst 6807-XL chassis is the“modular” aspect of a new Cisco Catalyst 6800 Series family of multilayer switching products, which combine significant technological innovation with unparalleled investment protection, to support tomorrow’s campus backbone.

Cisco-Catalyst-6807-XL.jpg


Module Support on the Cisco Catalyst 6807-X

Module-Support-on-the-Cisco-Catalyst-6807-X.jpg

The Cisco Catalyst 6807-XL chassis provides extremely high levels of system scalability and performance, coupled with unprecedented investment protection for migrations and upgrades from the current Cisco Catalyst 6500-E chassis:

It can deliver up to 11.4 Tbps of total system capacity, with up to 880 Gbps of per-slot bandwidth. In a VSS configuration, this level of support translates to a system capacity of up to 22.8 Tbps.

It is optimized for high-density 10, 40, and 100 Gigabit Ethernet, also providing superior customer investment protection by supporting the Cisco Catalyst 6500 Supervisor Engine 2T and associated LAN and service modules.

 

Cisco Catalyst 6807-XL Features and Benefits

Scalability

The Cisco Catalyst 6800 Series chassis is capable of delivering up to 11.4 terabits per second (Tbps) of system bandwidth capacity and up to 880 gigabits per second (Gbps) of per-slot bandwidth. In a system configured for VSS, this translates to a system capacity of 22.8 Tbps. The Cisco Catalyst 6800 Series Switch is optimized for high-density 10 Gigabit Ethernet, 40 Gigabit Ethernet, and 100 Gigabit Ethernet.

 

Availability and Resiliency

The Cisco Catalyst 6800 Series Switch provides a mechanism for rapid supervisor engine failover by supporting Nonstop Forwarding with Stateful Switchover (NSF/SSO).

Moreover, with VSS Quad-Sup SSO (VS4O), the modular Cisco Catalyst 6800 Series Switch takes high availability to the next level. VS4O is the next generation of VSS technology and provides 99.999% availability, making the Cisco Catalyst 6800 Series Switch ideal for campus backbone deployments.

 

Smart Operations

The Cisco Catalyst 6800 Series Switch helps simplify the operation of the network by providing support for features such as Cisco Catalyst Instant Access and Smart Install.

The Cisco Catalyst 6800 Series Switch can be configured as a parent for Cisco Catalyst Instant Access deployments. Cisco Catalyst Instant Access enables the deployment of access switches instantly through a single touch point with feature and configuration consistency.

The Cisco Catalyst 6800 Series Switch can serve as a director for Smart Install: a plug-and-play configuration and image-management feature that provides zero touch deployment for new switches. You can ship a switch to a location, place it in the network, and power it on with no configuration required on the device.

 

Security

The Cisco Catalyst 6807-XL chassis with Cisco Catalyst 6500 Series Supervisor Engine 2T provides comprehensive security with features such as Cisco TrustSec. Cisco TrustSec builds security and intelligence into the network with policy-based access control, identity-aware networking, and data confidentiality and integrity. Because networks have no borders, Cisco TrustSec helps secure borderless networks with confidence, consistency, and efficiency.

 

Virtualization

The Cisco Catalyst 6807-XL chassis with the Cisco Catalyst 6500 Series Supervisor Engine 2T provides a comprehensive suite of virtualization features including L2/L3 VPN, full MPLS, EVN, VRF aware applications for NAT Netflow, GRE for v4/v6, L2 extensions with VPLS, etc to segment different user groups and serve the unique security/QoS policy requirements of each of these diverse user groups.

 

Application Visibility and Control

The Cisco Catalyst 6800 Series Switch allows IT professionals to meet or exceed business service-level agreements and user expectations through:

Deep visibility and control for discovery, prioritization, monitoring, and control of applications — integrated into routing and switching with flexible NetFlow and QoS

Application recognition with NBAR and precise performance analytics with 1588 time stamping with integrated NAM-3 service module

 

Ready for Software Defined Networking (SDN)

Cisco Catalyst 6807-XL with Cisco Catalyst Supervisor Engine 2T is SDN ready, with a flexible architecture and API framework with OnePk that allows developers to deliver custom services such as network slicing and traffic steering based on industry standards such as OpenFlow to work in conjunction with applications that make the network agile.

PDF File from http://www.cisco.com/c/dam/en/us/products/collateral/switches/catalyst-6807-xl-switch/at_a_glance_c45-728226.pdf

More info you can refer to http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6807-xl-switch/white_paper_c11-728264.html

 

More Cisco 6800 Series Topics

Cisco Catalyst 6807-XL Modular Switch Review

Cisco Catalyst 6800 Series-The New Campus Backbone Switches

Cisco Catalyst 6800: New Name, Same Game

Cisco Catalyst 6880-X Series Review

Read more

The Different Types of Ethernet Cables

December 31 2014 , Written by Cisco & Cisco Router, Network Switch Published on #Networking

As the standard cables that are commonly used to connect a modem to a router, and to connect a router to a computer’s network interface card (NIC), Ethernet cables have many different categories, such as Category 3, Category 5, Category 5e, Category 6, Category 6a, and Category 7. These types of Ethernet Cables have been developed, and each category has different specifications as far as shielding from electromagnetic interference, data transmission speed, and the possible bandwidth frequency range required to achieve that speed. It may be hard to decide which one you need while looking at all the available options for Ethernet cabling. Actually, the category of cable is usually clearly printed on the cable’s sheath, so there can be no doubt as to the type of cable being used. But do you know about the main differences between these categories of Ethernet cable? So in the following part we will tell about the main features of each type of Ethernet Cable.

Category 3

Category 3 Ethernet cable, also known as Cat 3 or station wire, is one of the oldest forms of Ethernet cable still in use today. It is an unshielded twisted pair (UTP) cable that is capable of carrying 10 megabits per second (Mbps) of data or voice transmissions. Its maximum possible bandwidth is 16 MHz. Cat 3 cable reached the peak of its popularity in the early 1990s, as it was then the industry standard for computer networks. With the debut of the faster Category 5 cable, however, Cat 3 fell out of favor. It still can be seen in use in two-line telephone systems and older 10BASE-T Ethernet installations.

 

Category 5

Category 5 (Cat 5) Ethernet cable is the successor to the earlier Category 3. Like Cat 3, it is a UTP cable, but it is able to carry data at a higher transfer rate. Cat 5 cables introduced the 10/100Mbps speed to the Ethernet, which means that the cables can support either 10 Mbps or 100 Mbps speeds. A 100 Mbps speed is also known as Fast Ethernet, and Cat 5 cables were the first Fast Ethernet-capable cables to be introduced. They also can be used for telephone signals and video, in addition to Ethernet data. This category has been superseded by the newer Category 5e cables.

 

Category 5e

The Category 5e standard is an enhanced version of Cat 5 cable, which is optimized to reduce crosstalk, or the unwanted transmission of signals between data channels. This category works for 10/100 Mbps and 1000 Mbps (Gigabit) Ethernet, and it has become the most widely used category of Ethernet cable available on the market. While Cat 5 is common in existing installations, Cat 5e has completely replaced it in new installations. While both Cat 5 and Cat 5e cables contain four twisted pairs of wires, Cat 5 only utilizes two of these pairs for Fast Ethernet, while Cat 5e uses all four, enabling Gigabit Ethernet speeds. Bandwidth is also increased with Cat 5e cables, which can support a maximum bandwidth of 100 MHz. Cat 5e cables are backward compatible with Cat 5 cables, and can be used in any modern network installation.

 

Category 6

One of the major differences between Category 5e and the newer Category 6 is in transmission performance. While Cat 5e cables can handle Gigabit Ethernet speeds, Cat 6 cables are certified to handle Gigabit Ethernet with a bandwidth of up to 250 MHz. Cat 6 cables have several improvements, including better insulation and thinner wires, that provide a higher signal-to-noise ratio, and are better suited for environments in which there may be higher electromagnetic interference. Some Cat 6 cables are available in shielded twisted pair (STP) forms or UTP forms. However, for most applications, Cat 5e cable is adequate for gigabit Ethernet, and it is much less expensive than Cat 6 cable. Cat 6 cable is also backwards compatible with Cat 5 and 5e cables.

 

Category 6a

Category 6a cable, or augmented Category 6 cable, improves upon the basic Cat 6 cable by allowing 10,000 Mbps data transmission rates and effectively doubling the maximum bandwidth to 500 MHz. Category 6a cables are usually available in STP form, and, as a result, must have specialized connectors that ground the cable.

 

Category 7

Category 7 cable, also known as Class F, is a fully shielded cable that supports speeds of up to 10 Gbps (10,000 Mbps) and bandwidths of up to 600 Mhz. Cat 7 cables consist of a screened, shielded twisted pair (SSTP) of wires, and the layers of insulation and shielding contained within them are even more extensive than that of Cat 6 cables. Because of this shielding, they are thicker, more bulky, and more difficult to bend. Additionally, each of the shielding layers must be grounded, or else performance may be reduced to the point that there will be no improvement over Cat 6, and performance may be worse than Cat 5. For this reason, it’s very important to understand the type of connectors at the ends of a Cat 7 cable.

 The following table summarizes the most common types of Ethernet cables, including their maximum data transmission speeds and maximum bandwidths. 

 

Cable Type

Maximum Data Transmission Speed

Maximum Bandwidth

Category 3

UTP

10 Mbps

16 MHz

Category 5

UTP

10/100 Mbps

100 MHz

Category 5 e

UTP

1000 Mbps

100 MHz

Category 6

UTP or STP

1000 Mbps

250 MHz

Category 6 a

STP

10,000 Mbps

500 MHz

Category 7

SSTP

10,000 Mbps

600 MHz

With each successive category, there has been an increase in data transmission speed and bandwidth. To fully future-proof a network installation, the highest categories are recommended, but only if all of the other equipment on the network is capable of similar speeds. Otherwise, expensive cables will be only as fast as the slowest piece of hardware on the network.

 

Ethernet Cable Connectors

The ends of Ethernet cables that connect into a NIC, router, or other network device are known by several names. Modular connector, jack, or plug are the most commonly used terms. Shorter lengths of Ethernet cable are usually sold with the connectors already installed, but for custom installations requiring longer lengths, cable is often sold in bulk quantities, and connectors must be installed on the ends.

The most common type of connector for Ethernet installations is referred to as an "RJ-45" connector. It is officially known as an 8P8C connector, but this term is rarely used in the field, and the term "RJ-45" which was the telephone industry’s term for this connector’s wiring pattern, has become the customary colloquial name for the connector itself. Categories 3 through 6 all use the RJ-45 connector, but Cat 7 utilizes a specialized version of the RJ-45 called the GigaGate45 (GG45), which grounds the cable and allows for higher data transmission rates. There are two standard pin assignment configurations for RJ-45 connectors: T568A and T568B. The T568A standard is typically used in home applications, while T568B is used in business applications.

In every case, the specifications of the cable, such as its category, whether or not it is shielded, and whether or not it needs to be grounded, must match the specifications of the connector. For those who are confused or uncertain about crimping and installing connectors to cables manually, it is best to buy cables that already have connectors professionally installed.

 

Other Qualities of Ethernet Cables to Consider

There are a few important considerations that apply to all Ethernet cables. Data transmission rate and bandwidth both decrease with the increase of cable length, so the shorter the length, the better. For 10/100/1000BASE-T networks (those that have maximum speeds of 10, 100, or 1000 Mbps, including all the aforementioned cable types except for Categories 6a and 7), 100 meters is the maximum allowable cable length before the signal will degrade. For category 6a cables running at 10 Gbps speeds, 55 meters is the maximum allowable length, and even this length is only allowed in very good alien crosstalk conditions, or areas of low interference, such as when the cable is located far away from other cables that could cause interference.

There are some other terms regarding cable terminations that can complicate the shopping experience. Some cables are referred to as patch cables, while others are called crossover cables. Even though crossover and patch cables may look the same, they function differently. A patch cable is one that terminates with the same type of connector standard at both ends. The connectors terminating a patch cable can use the T568A or T568B standards, but both ends must be the same. A crossover cable, on the other hand, has one end that terminates in a T568A connector and another that terminates in a T568B connector. Patch cables are used to connect devices that are different from one another, such as a switch and a computer. Crossover cables are used to connect similar devices, as when a switch is connected to another switch, for example.

Another important distinction in Ethernet cables is whether they contain solid or stranded conductors.

Stranded-vs.-Solid-Core.gif

Solid conductor cables have one solid wire per conductor, while stranded conductor cables have several strands of wire (typically seven) wrapped around each other to form a single conductor. Each type has its own advantages and disadvantages. Solid conductor cables are best for fixed wires within the walls or structure of a building. The single conductors are sturdy enough to be punched down into wall jacks and patch panels, but not as easy to install into a typical RJ-45 connector. Stranded conductors, on the other hand, can fray when punched down into wall jacks, so they are better suited to be crimped into an RJ-45 connector. They are also more flexible and forgiving when bent at sharp angles, so they are better suited for patch cables and applications where the cable may be rolled up or otherwise moved around.

So when you’re setting up an Internet connection in your home or office, you’ll need to obtain the proper Ethernet cable to attach your computer to the modem. While connecting the cable is typically a simple task, finding the right one may be a bit more complex. While Ethernet cables may all look similar to one another, their specifications vary widely. It’s important to research what type of cable will work with your equipment, and you’ll also want to consider things like the price and quality of the cable, as well as the types and number of devices you’ll be connecting to your network. You could go for a cheap, industry standard solution such as Cat 5e cable or future-proof your network by opting for a Cat 7 cable. If you’re looking to connect one switch to another or bypass a router, maybe crossover cables are the solution, or maybe you need a lot of patch cables to connect more devices to your network. In any case, you’ll also want to ensure you’re purchasing the right length of Ethernet cable, and properly addressing any interference concerns. No matter what your networking needs are, eBay is sure to have the category, length, and condition of Ethernet cable to get you connected.

 

More Related Ethernet Cable Tips

Ethernet Crossover Cable vs. Ethernet LAN Cable

Cisco Console Cables, Popular Types You Used

How to Create a Console Cable & Make a Console Connection?

Cat5e and Cat6 Cabling for More Bandwidth? CAT5 vs. CAT5e vs. CAT6

Cat5e vs. Cat6 Cables

How to Make Your Ethernet Crossover Cable?

CAT-5, CAT-5e, CAT-6, and CAT-7-General Questions

Read more

EoS and EoL Announcement for the Cisco Catalyst 4948 Switch Accessories

December 24 2014 , Written by Cisco & Cisco Router, Network Switch Published on #Cisco News

Have you used Cisco 4900 Series switches? Pay attention here, Cisco announced the end-of-sale and end-of-life dates for some Cisco Catalyst 4948 Switch Accessories. You need to check the product part numbers affected by this announcement as well as the last day to order the affected products. The day is January 23, 2015. Firstly let’s check the product part numbers affected by this announcement.

Product Part Numbers Affected by This Announcement

End-of-Sale Product Part Number

Product Description

Replacement Product Part Number

Replacement Product Description

Additional Information

C4948-BKT-KIT=

C49xx front and rear mount brackets

See the Product Migration Options section below for detailed information on replacing this product.

   

C4948-BKT-REC=

C49xx front 2inch rec mounting brackets

See the Product Migration Options section below for detailed information on replacing this product.

   

C4948-REAR-BKT=

C49xx rear mount brackets

See the Product Migration Options section below for detailed information on replacing this product.

   

PWR-C49-300AC

Catalyst 4948 300-Watt AC Power Supply

See the Product Migration Options section below for detailed information on replacing this product.

   

PWR-C49-300AC/2

Catalyst 4948 300-Watt AC Power Supply Redundant

See the Product Migration Options section below for detailed information on replacing this product.

   

PWR-C49-300AC=

Catalyst 4948 300-Watt AC Power Supply (Spare)

See the Product Migration Options section below for detailed information on replacing this product.

   

WS-X4948-19CNTR

4948, 4948-10G, 4928, ME4924 Center Mount 19 Inch Rack Kit L/R

See the Product Migration Options section below for detailed information on replacing this product.

   

WS-X4948-19CNTR=

4948, 4948-10G, 4928, ME4924 Center Mount 19 Inch Rack Kit L/R

See the Product Migration Options section below for detailed information on replacing this product.

   

WS-X4948-23CNTR

4948, 4948-10G, 4928, ME4924 Center Mount 23 Inch Rack Kit L/R

See the Product Migration Options section below for detailed information on replacing this product.

   

WS-X4948-23CNTR=

4948, 4948-10G, 4928, ME4924 Center Mount 23 Inch Rack Kit L/R

See the Product Migration Options section below for detailed information on replacing this product.

   

WS-X4991=

Catalyst 4948 Fan Tray (Spare)

See the Product Migration Options section below for detailed information on replacing this product.

 

Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in the following table of the EoL bulletin. In the table it describes the end-of-life milestones, definitions, and dates for the affected products. For customers with active and paid service and support contracts, support will be available under the terms and conditions of customers' service contract.

End-of-Life Milestones and Dates for the Cisco Catalyst 4948 Switch Accessories

Milestone

Definition

Date

End-of-Life Announcement Date

The date the document that announces the end-of-sale and end-of-life of a product is distributed to the general public.

July 25, 2014

End-of-Sale Date

The last date to order the product through Cisco point-of-sale mechanisms. The product is no longer for sale after this date.

January 23, 2015

Last Ship Date:
HW

The last-possible ship date that can be requested of Cisco and/or its contract manufacturers. Actual ship date is dependent on lead time.

April 23, 2015

End of Routine Failure Analysis Date:
HW

The last-possible date a routine failure analysis may be performed to determine the cause of hardware product failure or defect.

January 23, 2016

End of New Service Attachment Date:
HW

For equipment and software that is not covered by a service-and-support contract, this is the last date to order a new service-and-support contract or add the equipment and/or software to an existing service-and-support contract.

January 23, 2016

End of Service Contract Renewal Date:
HW

The last date to extend or renew a service contract for the product.

April 20, 2019

Last Date of Support:
HW

The last date to receive applicable service and support for the product as entitled by active service contracts or by warranty terms and conditions. After this date, all support services for the product are unavailable, and the product becomes obsolete.

January 31, 2020

HW=Hardware    OS SW=Operating System Software   App. SW=Application Software

 

More about Product Migration Options

Customers are encouraged to migrate to the Cisco Catalyst 4948E switch platform, which has equivalent accessories. Information about this product can be found at: http://www.cisco.com/c/en/us/products/switches/catalyst-4948e-ethernet-switch/index.html.

Customers may be able to use the Cisco Technology Migration Program (TMP) where applicable to trade-in eligible products and receive credit toward the purchase of new Cisco equipment. For more information about Cisco TMP, customers should work with their Cisco Partner or Cisco account team. Cisco Partners can find additional TMP information on Partner Central at http://www.cisco.com/web/partners/incentives_and_promotions/tmp.html.

 

Reference from http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-4900-series-switches/eos-eol-notice-c51-732334.html

 

More Cisco’s EoL and EoS Announcements

End-of-Sale Models of Catalyst 6500

EoL & EoS Announcement for the Cisco Catalyst 4500 Supervisor Engine 6L-E

How to Move Cisco’s Catalyst 6500 to the Nexus 9000?

 

More you can read this page: http://blog.router-switch.com/category/news/

Read more

A Layer-3 Switch or A Router?

December 19 2014 , Written by Cisco & Cisco Router, Network Switch Published on #Cisco Switches - Cisco Firewall

Do you think that it’s not easy to select the very suitable network hardware for setting up your network, layer-3 switch or a router? What factors do you need to consider when you decide to buy network hardware? Generally, to choose a layer-3 switch or a router is not so complicated. Someone listed more differences between layer-3 switch and a router, which can help you make a smart decision. Let’s take a look.

In fact, a Layer 3 switch works much like a router. Why? Because it has the same IP routing table for lookups and it forms a broadcast domain. But pay attention, the “layer 3” feature makes the switch looks more like a “switch”.

The “switch” part of “Layer 3 switch” is there because:

  1. The layer 3 switch has 24+ Ethernet ports and no WAN interfaces.
  2. The layer 3 switch will act like a switch when it is connecting devices that are on the same network.
  3. The layer 3 switch is the same as a switch with the router’s IP routing intelligence built in.
  4. The switch works very quickly to switch or route the packets it is sent.

What-is-the-difference-between-a-Layer-3-switch-and-a-Route.jpg

Layer 3 Switch is really like a High-Speed Router without the WAN connectivity. When it comes to Layer 3 Switching, there are two kinds: hardware and software. With a hardware-based solution, the device is using an ASIC (A Dedicated Chip) to perform the function. With the software implementation, the device is using a computer processor and software to perform the function. Generally, Layer 3 Switches and High-End Routers route packets using Hardware (Asics) and General-Purpose Routers Use Software to Perform Routing Functions.

In General, A Layer-3 Switch (Routing Switch) Is Primarily A Switch (A Layer-2 Device) That Has Been Enhanced Or Taught Some Routing (Layer 3) Capabilities. A Router Is A Layer-3 Device That Simply Do Routing Only. In The Case Of A Switching Router, It Is Primarily A Router That Uses Switching Technology (High-Speed Asics) For Speed And Performance (As Well As Also Supporting Layer-2 Bridging Functions).

Why we need a Layer 3 switch:

  •  Network with a lot of broadcasts that needs better performance.
  • Subnets and/or VLANS that are currently connected Via a router.
  • Higher Performance VLANS.
  • Departments Need Their Own Broadcast Domains For Performance Or Security.
  • Considering Implementing VLANS.

 

Difference between a Layer-3 switch and a Router:

  •  Performance versus Cost— Layer 3 switches are much more cost effective than routers for delivering high-speed inter-VLAN routing. High performance routers are typically much more expensive than Layer 3 switches.
  • Port density— Layer 3 switches are enhanced Layer 2 switches and, hence, have the same high port densities that Layer 2 switches have. Routers on the other hand typically have a much lower port density.
  • Flexibility— Layer 3 switches allow you to mix and match Layer 2 and Layer 3 switching, meaning you can configure a Layer 3 switch to operate as a normal Layer 2 switch, or enable Layer 3 switching as required.
  • Layer 3 Switch is used to route traffic between Ethernet networks, without having to worry about the complexities of supporting WAN technologies such as Frame Relay or ATM. Routing over WAN networks, simply by plugging a traditional router that connects to the WAN networks into the LAN network.
  • The key difference between Layer 3 switches and routers lies in the hardware technology used to build the unit. The hardware inside a Layer 3 switch merges that of traditional switches and routers, replacing some of a router’s software logic with hardware to offer better performance in some situations.

If we sum up the main features of a layer-3 switch, we can get some key points as follows:

Layer 3 Switch is used Primarily for Inter-VLAN Routing. It don’t Have WAN Connectivity. It Has 24+ Ethernet Ports And No WAN Interfaces. The Layer 3 Switch will act like a switch when it is connecting devices that are on the same network. It works very quickly to switch or route the packets it is sent. The Layer-3 switch is the same as a switch with the router’s IP Routing Intelligence built in.

 

More Related Network Hardware Topics

Use Layer-3 Switch or Router?

Layer-3 Switching or Layer-2 Switching?

How to Select You Cisco Switch and Router Hardware?

Read more

To Read about the Cisco Nexus 5548P Switch

December 12 2014 , Written by Cisco & Cisco Router, Network Switch Published on #Cisco Switches - Cisco Firewall

Cisco Nexus 5548P Switch, the first platform in the Cisco Nexus 5500 Switches, is a one-rack-unit (1RU), 1 and 10 Gigabit Ethernet and FCoE access-layer switch built to provide 960 Gbps of throughput with very low latency. It has 32 fixed 1 and 10 Gigabit Ethernet ports that accept modules and cables meeting the Small Form-Factor Pluggable Plus (SFP+) form factor. One expansion module slot can be configured to support up to 16 additional 1 and 10 Gigabit Ethernet ports or 8 Fibre Channel ports plus 8 1 and 10 Gigabit Ethernet ports. The switch has a single serial console port and a single out-of-band 10/100/1000-Mbps Ethernet management port. Two N+N redundant, hot-pluggable power supplies and two N+N redundant, hot-pluggable fan modules provide highly reliable front-to-back cooling.

Cisco Nexus 5548P-

All ports are at the rear of the switches, simplifying cabling and reducing cable length. Cooling is front-to-back, supporting hot- and cold-aisle configurations that help increase cooling efficiency. The front panel includes status indicators and hot swappable, N+N redundant power supplies and their power entry connections and cooling modules. All serviceable components are accessible from the front panel, allowing the switch to be serviced while in operation and without disturbing network cabling.

Cisco Nexus 5548P Rear Panel

Cisco Nexus 5548P Rear Panel

Cisco Nexus 5548P Front Pane

Cisco Nexus 5548P Front Pane

The Cisco Nexus 5500 platform is equipped to support expansion modules that can be used to increase the number of 10 Gigabit Ethernet and FCoE ports or to connect to Fibre Channel SANs with 1/2/4/8-Gbps Fibre Channel switch ports, or both. The Cisco Nexus 5548P supports one expansion module from the following offerings:

• Ethernet module that provides sixteen 1 and 10 Gigabit Ethernet and FCoE ports using the SFP+ interface

Ethernet Expansion Module

Ethernet Expansion Module

• Fibre Channel plus Ethernet module that provides eight 1 and 10 Gigabit Ethernet and FCoE ports using the SFP+ interface, and 8 ports of 1/2/4/8-Gbps native Fibre Channel connectivity using the SFP interface

Combination Expansion Module

Combination-Expansion-Module.jpg

The Cisco Nexus 5548P control plane runs Cisco NX-OS Software on a dual-core 1.7-GHz Intel Xeon Processor C5500/C3500 Series with 8 GB of DRAM. The supervisor complex is connected to the data plane in-band through two internal ports running 1-Gbps Ethernet, and the system is managed in-band, or through the out-of-band 10/100/1000-Mbps management port. Table 1 summarizes the control-plane specifications.

Cisco Nexus 5548P Control Plane Components

Component

Specification

CPU

1.7 GHz Intel Xeon Processor C5500/C3500 Series

(dual core)

DRAM

8 GB of DDR3 in two DIMM slots

Program storage

2 GB of eUSB flash memory for base system storage

Boot and BIOS flash memory

8 MB to store upgradable and golden image

On-board fault log

64 MB of flash memory to store hardware-related fault and reset reasons

NVRAM

6 MB of SRAM to store syslog and licensing information

Management interface

RS-232 console port and 10/100/1000BASE-T mgmt0

The Cisco Nexus 5548P is equipped with seven UPCs: six to provide 48 ports at 10 Gbps, and one used for connectivity to the control plane. Figure 6 shows the connectivity between the control plane and the data plane.

Cisco Nexus 5548P Data Plane and Control Plane Architecture

Cisco-Nexus-5548P-Data-Plane-and-Control-Plane-Architecture.jpg

 

More details about Cisco Nexus 5500 and Nexus 5548P you can read her http://www.cisco.com/c/en/us/products/collateral/switches/nexus-5548p-switch/white_paper_c11-622479.html

 

More Related Cisco Nexus 5500 Switch Review and Overview

Cisco Nexus 5500 Overview, More Models, Features and Comparison

The Viable Cisco Nexus 5500 Core Switch for the Midsized Enterprise

How to Move Cisco’s Catalyst 6500 to the Nexus 9000?

Nexus 9000 vs. Nexus 7000

Cisco Nexus 9000 Models Comparison: Nexus 9500 & Nexus 9300 Series

Three Cisco Nexus 9300 Models Overview

The 8-slot Nexus 9508 Switch Review

Cisco 9500 Nexus Switch Overview-Model Comparison

Cisco Nexus 9000 Series Switches Overview

Read more

CAT5 vs. CAT5e vs. CAT6

December 3 2014 , Written by Cisco & Cisco Router, Network Switch Published on #Networking

What is the difference between CAT5, CAT5E and CAT6 cable? Most people may be familiar with them. Because they are often used in computer networks, and also can be used to move data in home theatre applications. Category 5 (CAT5), Category 5E (CAT5E) and Category 6 (CAT6) cables are all twisted pair cables, available in solid and stranded varieties. What are their own features? In the following part, we will talk about the main difference between CAT5, CAT5e and CAT6.

Cable-comparison.jpg

Cat-5--Cat-5e-and-Cat-6.jpg

CAT5 cable is the most common, and comes in two types—Unshielded Twisted Pair, known as UTP, and Screened Twisted Pair, called SCTP. The SCTP cable has an extra shield to limit outside interference, and is generally only used in Europe. UTP cables are used all over the states and come either solid or stranded. Solid CAT5 cables are stiff and the best choice for long distance transmissions. Stranded CAT5 is bendier and is often used as patch cable. The standard amount a CAT5 cable can handle is 100MHz, with the option for 10 or 100 Mbps Ethernet. A CAT5 cable can also carry more than one signal—such as two phone lines and a single 100BASE-T channel in one cable.

utp-stp.png

CAT5e is very similar to CAT5,the ‘e’ standing for enhanced. This cable has more ability for data transmission, with the option to transfer data at 1000 Mbps. Cat5e can also be used with Gigabit Ethernet and generally has less near-end crosstalk, or NEXT than standard CAT5 cables. When installing a new system, CAT5e cables are almost always used over CAT5, though most existing installations are still CAT5.

The most sophisticated of the three cables is CAT6. Although it is also comprised of four pieces of twisted pair copper wire, it has a longitudinal separator. This allows the cables to be separated from each other and, in turn, allows not only for an increased data transfer speed, but less crosstalk and double the bandwidth. CAT6 cabling is a good choice for most new systems, especially those that are evolving and might need more options in the future. CAT6 is perfect for 10 Gigabit Ethernet and can work at up to 250 MHz. The really intelligent aspect of CAT6 is that it is compatible with already installed CAT5 and CAT5e cabling.

With the ever-changing landscape of technology, when you are installing a new system, the best choice for an easily adaptable future is CAT6. However, CAT6 is more expensive, and often some companies just don’t need anything quite that sophisticated. If you are just wanting to expand your network a bit, CAT5e is a more cost-effective and the simpler choice. CAT5, though perfectly adequate for many existing systems, will just not be able to keep up with the speed and performance needs of tomorrow.

Category 5 Network Cable

Bandwidth up to 100MHz

Supports 10/100 Ethernet (Ethernet and Fast Ethernet)

Category 5E Network Cable

Bandwidth up to 350MHz

Supports 10/100/1000 Ethernet (Ethernet, Fast Ethernet, and Gigabit Ethernet)

Backwards compatible with CAT5 cable

Reduced crosstalk compared to CAT5

Category 6 Network Cable

Bandwidth up to 550MHz

Supports 10/100/1000 Ethernet (Ethernet, Fast Ethernet, and Gigabit Ethernet)

Backwards compatible with CAT5/CAT5E cable

Reduced crosstalk compared to CAT5/CAT5E

CAT5E supports Gigabit networking, but CAT6 is certified for Gigabit networking and will perform better over longer distances. Keep in mind that your network is only as fast as your slowest component, so unless every piece of your network (routers, cables, etc.) supports Gigabit Ethernet, you will not be able to reach those speeds.

 

More Related Network Cable Topics

Cat5e and Cat6 Cabling for More Bandwidth? CAT5 vs. CAT5e vs. CAT6

Cat5e vs. Cat6 Cables

Cat5 vs. Cat5e

How to Create a Console Cable & Make a Console Connection?

How to Connect the Console Port to a PC?

How to Connect to a Cisco Standard Console Port (RJ-45)?

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10 gigabit Ethernet /10 GbE Overview

December 2 2014 , Written by Cisco & Cisco Router, Network Switch Published on #Cisco Modules - Cisco Cables - Cisco Memory

Most companies these days are familiar with the 10 GbE technology. Why 10 GbE? Why 10 Gigabit Today? In the following part, we will share what the exact 10GbE is and more examples of using 10 GigE technology.

 

What is the Exact 10 GbE Technology?

10 gigabit Ethernet, a telecommunication technology, offers data speeds up to 10 billion bits per second. 10 gigabit Ethernet (10-Gigabit Ethernet) is also known as 10GE, 10GbE or 10 GigE.

The 10 GbE standard is fully interoperable with existing Ethernet protocols. It differs from traditional Ethernet in that it is a full-duplex protocol, meaning it does not need Carrier Sense Multiple Access/Collision Detection (CSMA/CD) protocols. In every other way, 10 GbE is the same as the original Ethernet protocol. This is important for network managers because as the demand for speed increases, 10 Gb Ethernet can easily be deployed within existing networks, providing a cost-effective technology that can support high-speed, low-latency requirements.

10-Gigabit Ethernet is often described as a disruptive technology that offers a more efficient and less expensive approach to moving data on backbone connections between networks. The IEEE 802.3ae standard permits distances between physical locations up to 40 kilometers over a single-mode fiber. Both single-mode and multi-mode fiber systems can be used with 10 GbE applications.

Similar to existing Ethernet protocols, 10 Gb Ethernet is a Layer 1 and Layer 2 protocol that adheres to key Ethernet attributes, including the Media Access Control (MAC) protocol, the Ethernet frame format, and minimum and maximum frame size. 10 Gb Ethernet connects current to fiber optic cable but is expected to be compatible with twisted-pair copper as well. The standard supports connections to both LANs and WANs, and can connect to SONET and SDH wide area networks.

Challenges to deploying 10 Gb Ethernet are primarily based on the costs to deploy versus the benefits received, along with issues associated with the potential replacement of legacy network technologies, such as point-to-point private lines and/or multiprotocol label switching (MPLS). 

 

For Many Companies & Enterprises, Why 10 Gigabit Today?

More for Less

In the past, 10GbE was neither necessary nor affordable. As with most burgeoning technologies, those dynamics are changing. Technological advancements have resulted in higher performance at lower costs. As such, gigabit and 10GbE bandwidth has become affordable for most companies.

Regardless of cost, there is also a distinct need. An increasing number of applications require considerable bandwidth to support the transfer and streaming of large data, video and audio files. As bandwidth-intensive applications and latency sensitive traffic types become ubiquitous, so does the need to support and transport them.

In addition, many companies are seeking tofuture proof” their network to ensure they can support emerging technologies and preserve their initial investments. In the past, fiber and wire cabling systems were installed with a 10-year lifespan in mind. However, with the rapid, ongoing evolution of network technologies, companies must be concerned with their current infrastructure’s ability to keep pace.

Costs associated with re-cabling a network can be exorbitant and organizations should take precautions to ensure their cabling systems can last well into the future. 10GbE provides the very best assurance for being able to support forthcoming technologies and delivers utmost investment protection.

 

Data Centers

For many institutions–especially those that utilize automated trading – uptime and response time is critical. Delays longer than a second can be exceedingly costly. With servers now being able to transmit near gigabit bandwidth and network downtime proving catastrophic, today’s enterprise data centers need extended bandwidth.

10GbE is an ideal technology to move large amounts of data quickly. The bandwidth it provides in conjunction with server consolidation is highly advantageous for Web caching, real-time application response, parallel processing and storage.

 

Campus Backbone Links

Many organizations wish to connect their campus buildings with high-speed links. Carrier-based services offload the burden of establishing and maintaining a 10GbE backbone, but limit flexibility and oftentimes prove too costly with expensive, unending monthly bills. This ongoing expense can be overwhelming for educational institutions, government organizations and hospitals as well as enterprises that do not have a set budget year to year.

Establishing a 10GbE campus backbone is a one-time expense that can provide significant cost savings when compared to monthly communications link bills.

Enterprise data center with 10GbE backbone

Enterprise-data-center-with-10GbE-backbone.jpg

 

Metro Area Transmission

Many companies also need to send and receive data beyond their campus, oftentimes in the form of large or streaming files that require high-speed links. Traditionally an area for carriers, 10GbE now offers an attractive alternative to costly monthly charges for long distance data transmission.

Many carriers offer expensive transmission services utilizing SONET OC-48 or OC-192c standards. These are considered “lit” services where a company has to add protocol conversion to be able to link from end to end.

Conversely, “un-lit” fiber–called Dark Fiber–is now being offered by carriers to companies able to provide their own connectivity. In these cases, routing switches supporting the 10GbE standard can provide their own transmission. Taking advantage of 10GbE performance in tandem with carriers’ Dark Fiber services can drastically reduce costs when compared tolit” transmission services.

 

About 10GbE Transceivers

IT professionals must also consider the devices that connect their cabling to their network. Transceivers provide the interface between the equipment sending and receiving data and the cabling transporting it. Just as there are distinct cabling technologies that coincide with distinct gigabit technologies, various transceivers are also available to match each gigabit standard.

Both gigabit and 10GbE technologies have “pluggable” transceivers. For gigabit technology, there are two defined transceiver types: Gigabit Interface Connector (GBIC) with its large metal case for insertion into low-density interface modules and units (switches), and the newer “mini-GBIC” or Small Form Factor Pluggable (SFP).

10GbE has four defined transceiver types. These transceivers are the result of Multi-Source Agreements (MSAs) that enable vendors to produce 802.3ae-compliant pluggable transceivers.

The four types are:

XENPAK–the first 10GbE pluggable transceivers on the market to support the 802.3ae standard transmission optics. They are large, bulky and used mainly in LAN switches. These transceivers are “hot pluggable” and support the new 802.3ak Copper standard with vendors now producing transceivers to connect CX4 cables.

XPAK–used primarily in Network Interface Cards (NIC) and Host Bus Adapter (HBA) markets for use in Servers and NAS devices.

X2the smaller brother of the XENPAK pluggable transceivers, the X2 form factor is about 2/3 the size of the XENPAK. With the same “hot pluggable” specifications and supporting all the 10GbE standards (including copper), the X2 form factor allows for more port density on switches. X2 is being used by ProCurve and Cisco thereby providing customers with a strong sense of assurance that this technology is the best choice for today and will have strong vendor support.

XFP–the newest pluggable transceiver on the market, XFP is the closest in size to the SFP pluggable transceiver now used for gigabit technology. Because it relies on a high-speed interface (10.3125Gbps), high-priced serializer/deserializer (SERDES) are required inside the switch to support it. Over time, the cost of such SERDES will decline, but today they add an unacceptable cost to the base system. Still, the positive aspect of the XFP form factor is it will allow switch vendors to increase port density in a smaller area for cost savings. A drawback of the XFP will be its inability to support the current Copper (802.3ak) or the 10GBASE-LX4 standards.

SFP+-As the industry brings down the cost and power of 10G optical devices, effort to increase the capacity of the existing SFP is being considered. For many customers, the possibility of achieving 10G speeds and a mechanical form factor that allows 1G or 10G to reside in the same footprint, might prove attractive. ProCurve continues to evaluate SFP+ as an alternative for the future.

As organizations grow their networks and support bandwidth-intensive applications and traffic types, 10GbE technology is becoming evermore pervasive. 10GbE functionality can provide immediate performance benefits and safeguard a company’s investment well into the future.

Just as there are many manifestations of the gigabit and 10GbE standards to suit various networking environments, there are also many copper and fiber cabling technologies to support them. Companies must have a solid understanding of not only their environment and need, but also the different standards and cabling technologies available to them. Doing so will help them develop a sound migration and cabling strategy, enabling them to reap the benefits of 10GbE for years to come.

 

More related Cisco 10GbE Transceivers

Catalyst 4500E & 4500X Series 10 GbE Review

About Transceiver & Cisco Transceiver Modules

Cisco XFP vs. SFP vs. SFP+

Cisco SFP vs. GBIC vs. XEP vs. SFP Plus

Cisco 10GBASE SFP+ Modules Overview

Cisco 10GbE Optics Modules & Optical Standards


Reference from http://searchnetworking.techtarget.com/definition/10-Gigabit-Ethernet and more...

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Cisco Indoor 802.11ac Access Point Comparison

October 28 2014 , Written by Cisco & Cisco Router, Network Switch Published on #Cisco Wireless - Cisco Wireless AP

In order to address these emerging trends, Cisco offers a new-generation of access points, the Cisco Aironet 3700, 3600, 2700, and 1700 for 802.11ac deployments Series, and the 3600, 2600, and 1600 Series. These access points extend spectrum intelligence, antenna density, and client acceleration to new price points in the mainstream. The product line also offers options that support the IEEE Wi-Fi standard, 802.11ac.

The second generation Cisco Aironet Access Point portfolio addresses a broad range of requirements for enterprise-class wireless services and provides industry-leading performance for secure and reliable radio-frequency (RF) connections. Whether you require entry-level wireless connectivity for a small enterprise, mission-critical coverage at thousands of locations, or best-in-class performance with investment protection for high-density environments, you can rely on Cisco’s broad access point portfolio.

The Aironet 2700 (3x4 MIMO) and 3700 (4x4 MIMO) are newer products and offer built-in support for 802.11ac via internal or external antennas, depending on the model.

The Aironet 2700 and 3700 are also slated to support the next generation Wave 2 module that will be released in the future as the development evolves. All three of these options are controller based (only) and support a wide selection of controller options.

Designed for small, medium-sized enterprise network, Cisco Aironet 1700 Series Access Points is entry-level access points that offes the latest 802.11ac Wi-Fi technology to meet the growing needs of today’s wireless network while providing offers the right value to help customers ease into 802.11ac networking.

The Cisco Aironet 1700 Series Access Points support 802.11ac Wave 1standard capabilities that allow you stay ahead of growing bandwidth requirements as:

• More wireless clients associate with the network

• More users tap into bandwidth-heavy multimedia applications

• Mobile workers increasingly use multiple Wi-Fi devices

The Cisco Aironet 1700 Series Access Points is a component of Cisco’s series of flagship, 802.11ac-enabled Aironet Series access points that deliver robust mobility experiences.

• Entry-level access point for small to midsized organizations, including retail, manufacturing, education, and branch offices

• Attractive price and performance for migrating to 802.11ac

• 802.11ac Wave 1 support with 3 x 3 MIMO, two spatial streams

• Cisco CleanAir Express spectrum intelligence across 20-, 40-, and 80-MHz-wide channels

• Optimized access point roaming which intelligently decides the correct access point as people move

• Multiple input, multiple output (MIMO) equalization for better uplink performance

The Cisco Aironet 2700 Series is a dual-band, 802.11ac supported Wi-Fi Access Point optimized for adding capacity and coverage to dense Wi-Fi networks. It also serves the performance needs of the latest BYOD clients now shipping with 802.11ac connections

 Delivering high performance for any small, medium-sized, and large enterprise network, the Aironet 2700 Series uses a purpose-built chipset with best-in-class RF architecture. It has been created specifically to take advantage of all the new speed and function of the latest Wi-Fi technology standard but at a price point that lets you ease into 802.11ac networking.

The main Feature Comparison of Cisco Aironet 802.11ac G2 Series Indoor APs

Aironet-170-2700-and-3700-AP.jpg

From Left to Right: 1700 Series vs. 2700 Series vs. 3700 Series

Cisco Aironet 802.11ac G2 Series Indoor Access Points

1700 Series

2700 Series

3700 Series

Wi-Fi standards

802.11 a/b/g/n/ac

802.11 a/b/g/n/ac

802.11a/b/g/n/ac

Ideal for

Small and midsize enterprises

Midsize or large enterprises that require advanced features

Midsize or large enterprises that require mission-critical traffic

Site type

Small and midsize offices, schools, warehouses

Midsize office, school or warehouse

Large office, midsize, or large warehouse

Application performance profile

802.11ac migration

High client density environments
802.11ac migration

High client density HD Video/VDI
802.11ac* migration
Comprehensive security

Future-proof modularity

N/A

N/A

Yes
WSM 
or 3G Small Cell 
or 802.11ac Wave 2* Module

Crowded areas

 

Yes

Yes

Number of radios

Dual (2.4 GHz and 5.0 GHz)

Dual (2.4GHz and 5.0GHz)

Dual (2.4GHz and 5.0GHz)

Max data rate

867 Mbps

1.3 Gbps

1.3 Gbps

MIMO radio design: spatial streams

3 x 3:2

3 x 4:3

4 x 4:3

Client count/ClientLink client count

200/-

200/128

200/128

Autonomous access point option

Yes

Yes

Yes

ClientLink 3.0

Transmit beamforming with 802.11ac clients

ClientLink 3.0, adding 802.11ac support for enhanced connectivity with 802.11 a/g/n/ac clients ECBF with 802.11ac clients 
ClientLink and ECBF to 11ac clients concurrently

ClientLink 3.0, adding 802.11ac support for enhanced connectivity with 802.11a/g/n/ac clients
ECBF with 802.11ac clients
ClientLink and ECBF to 11ac clients concurrently

CleanAir 2.0

CleanAir Express -- with 80 MHz channel support

Yes -- with 80 MHz channel support

Yes - 80 MHz channel support

GPS

     

Backhaul

     

DOCSIS3.0 capability

     

LTE Coexistence

     

VideoStream

Yes

Yes

Yes

BandSelect

Yes

Yes

Yes

Rogue access point detection

Yes

Yes

Yes

Adaptive wireless intrusion protection system (wIPS)

Yes

Yes

Yes

OfficeExtend
(Integrated- antenna models only)

Yes

Yes

Yes

FlexConnect

Yes

Yes

Yes

Power

802.3af, 802.3at PoE+, Enhanced PoE

802.3at PoE+, Enhanced PoE

4 x 4:3 operation: 802.3at PoE+, Enhanced PoE, Universal PoE (UPOE)
3 x 3:3 operation: 802.3af PoE

Temperature range

1700i: 0 to 40°C

2700i: 0 to 40°
2700e: -20 - 50° C
2700p -20 - 50° C

3700i: 0 to 40°C
3700e: -20 to 55°C
3700p: -20 to 55°C

Antennas

1700i: Internal

2700i: Internal
2700e: External
2700p: External

3700i: Internal
3700e: External
3700p: External

Limited lifetime warranty

Yes

Yes

Yes

*Planned for future support

 

More Related Cisco Wireless Access Points

New Cisco Aironet 2700 AP vs. AP3700

Connect with Aironet 700W Series Access Points

Cisco Aironet 1600 and 2600 Series Have Been Chosen to Replace Aironet 1140 Series and Aironet 1130 AG Series

How to Buy/Choose a Wireless Router for Your Home or Small-business Network?

Comparison of Cisco AP 2600 and Aironet 3600 Series

Cisco AP 3600 vs. Aironet 3500 Series

Cisco Aironet 1600/2600/3600 Series APs, Main Features and Comparison

Cisco Aironet 802.11n G2 Series Indoor Access Point Comparison

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More about Cisco 10GbE Optics Modules

October 16 2014 , Written by Cisco & Cisco Router, Network Switch Published on #Cisco Modules - Cisco Cables - Cisco Memory

There have been numerous different form factors and optics types introduced over the past years. The oldest, XENPAKs, remain very popular as the install base is large, while the newest SFP+ offer a much smaller form factor and the ability to offer 1G/10G combo ports on hardware for the first time. Like the move from GBIC to SFP the move from XENPAK to SFP+ seems inevitable, but currently there are several types of standard modules/form-factors available. In the following part there is a guide to these main module types and optical standards currently available.

XENPAK-the original 10GbE pluggable optics. Presents SC connectors

X2-the successor to the XENPAK. Presents SC connectors

XFP-the first of the small form factor 10GbE optics. Presents LC connectors

GBIC-the hot-swappable Gigabit Interface optical module with SC connector

SFP-also called mini-GBIC, is upgraded version of GBIC transceiver

SFP+-a 10GbE optics using the same physical form factor as a gigabit SFP. Because of this, many of the small SFP+ based 10GbE switches use 1G/10G ports, giving an added degree of flexibility. Presents LC connectors

Within these form factors are many different types of optical and electrical specifications; the only requirement is that the optics type match. It is perfectly acceptable to connect an X2 to an SFP, or a XENPAK to an SFP+, or any other combination.

 

Optical Standards

Electrical/Copper

10GBase-CX4
CX4 modules use Infiniband 4X cabling, and have a maximum distance of 15 meters. CX4 is an early copper standard, and due to the physical size of the connector, is not available in SFP+ form, or in XFP form from Cisco (Dell Networking, though, offers a CX4 XFP). CX4 was designed as a drop-in replacement for legacy Infiniband switching hardware – the existing Infiniband cable plant can be reused in a CX4 based network.

10GBase-CX1/10GBase-CU
10GBase-CX1 is the SFP+ copper standard. The standard has a maximum distance of 10 meters, though Cisco currently only offers lengths up to 5m. This is actually a cable with SFP+ ends, not a module with a separate cable.

Here is a picture

Cable-for-10GBase-CX1.jpg

Notice that the cable is permanently integrated into the SFP+ ends. Because of this, both devices must present SFP+ ports. While the cables are somewhat inconvenient to work with due to the integration, CX1 modules are used due to a very low cost, extremely low power consumption (0.25W per cable), and a negligible latency penalty.

 

Multimode Fiber

10GBase-SR
10GBase-SR is the original multimode optics specification, and is still by far the most commonly used. As it uses a single, low cost solid state laser assembly, it is also the least expensive of the optical modules available for a 10GbE platform. However, 10GBase-SR is very sensitive to fiber type. Below is a list of cable specs and maximum distance with SR optics.

Core Size
(microns)

Modal Bandwidth
(MHz*km)

Max
Distance

Notes

62.5

160

26m

This is standard multimode fiber.

62.5

200

33m

 

50

400

66m

 

50

500

82m

 

50

2000

300m

AKA: OM3 or 10GbE-optimized fiber

 

Because of this, it is highly recommended that any new deployment of multimode fiber be done with OM3 fiber. This will ensure an easier transition to 10GbE for future needs.

10GBase-LX4
To overcome the distance limitations of SR optics, the 10GBase-LX4 standard was developed. LX4 uses 4 lasers, each operating at a different wavelength, at a 2.5Gbps data rate. This results in a range of 240-300 meters, depending on cable grade. However, due to the complex laser assembly, it is not possible to get LX4 optics in XFP or SFP+ versions. With the ready availability of OM3 fiber and newer standards that provide long reach over multimode with a single laser, LX4 is rapidly becoming obsolete.

10GBase-LRM
The replacement to LX4, 10GBase-LRM will reach up to 220m over standard multimode fiber, but without the complexity of the LX4 optics. Instead, a single laser operating at 1310nm is used. This allows LRM optics to be packaged in XFP and SFP+ form factors.

 

Singlemode Fiber

10GBase-LR
10GBase-LR can reach up to 10km over singlemode fiber. There is no minimum distance for LR, either, so it is suitable for short connections over singlemode fiber as well.

10GBase-ER
10GBase-ER can reach up to 40km over singlemode fiber. Due to the laser power, attenuation is required for links less than 20km long.

10GBase-ZR
ZR optics can reach up to 80km over singlemode fiber. Due to the very high transmit power, significant attenuation is needed for shorter links. Use of ZR optics should be preceded with an optical power test of the fiber span in question to ensure a problem-free deployment. Interestingly, 10GBase-ZR is actually not an IEEE standard, though most vendors offer a ZR option.

10GBase-LW
10GBase-LW optics use the same laser, and have the same specifications as the 10GBase-LR optics. However, the LW optics present SONET/SDH physical signaling, allowing LW-equipped devices to interface directly with an existing OC192 transport infrastructure. LW optics are only available in XENPAK and X2 form factors. XFP-based cards move this functionality from the transceiver to the card itself, so make sure that if this functionality is needed, that the card itself has this support. The primary example is the as in the SPA-1X10GE-L-V2 vs the SPA-1X10GE-LW-V2.

10G over DWDM
With 10GbE, it is possible to get optics modules that output at DWDM wavelengths, allowing for much simpler DWDM deployments, and with these optics no additional transponder hardware is required. Current innovations in 10GbE/DWDM optics include full C-band tunability for ease of sparing, ordering, and provisioning of DWDM channels, as well as features like forward error correction (FEC) and OTN/G.709 support integrated directly onto the optic.

 

More about Cisco SFP, SFP+ Purchasing

Being used and interchanged on a wide variety of Cisco products, the hot Cisco SFPs can meet Cisco users’ different needs, for example, GLC-SX-MM, The 1000BASE-SX SFP, can support up to 1km over laser-optimized 50 μm multimode fiber cable; GLC-LH-SM, Cisco 1000BASE-LX/LH SFP transceiver module, operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers; GLC-T over unshielded twisted pair (UTP) Category 5 Cable, etc. And module numbers, such as SFP-10G-SR, GLC-ZX-SM, SFP-GE-T, GLC-BX-D and so on. Cisco SFP+, the 10G fiber optical module, can connect with other type of 10G modules.  The popular SFP+ modules, for instance, SFP-10G-SR, used for high-speed data transmission applications, supports 300m by MMF; SFP-10G-LRM supports 220m on standard FDDI grade multimode fiber (MMF) and 300m on standard single-mode fiber (SMF, G.652); SFP-10G-LR, supports 10 km on standard single-mode fiber (SMF, G.652). And more detailed SFP, XEP, SFP+, GBIC modules and other Transceivers you can get from router-switch.com. It will offer you a good warranty and more free technical support. More info you can visit the page http://www.router-switch.com/Price-cisco-optics-modules_c8

 

More Cisco Optics Modules Topics

Cisco 10GBASE SFP+ Modules Overview

Cisco 10GbE Optics Modules & Optical Standards

Cisco Interface Cards for Cisco 1900, Cisco 2900 and Cisco 3900 Series

Why Should We Care About 10 Gigabit Ethernet Pluggable Optics?

Cisco XFP vs. SFP vs. SFP+

Cisco SFP vs. GBIC vs. XEP vs. SFP Plus

Read more

Cisco ACI Mode

October 8 2014 , Written by Cisco & Cisco Router, Network Switch Published on #Cisco Switches - Cisco Firewall

The Nexus 9000 family of switches will operate in one of two modes:

NXOS Mode–If you’ve worked with Cisco’s DC switches like the Nexus 7K or 5K, this should be very familiar to you. In this mode, you essentially have a 10GbE or 40GbE switch, with the features that are baked into that

In NXOS Mode, all of the additional custom ASICs that are present on the switch fabric are used primarily for enhancing the functionality of the merchant silicon platform, such as increasing buffer space, etc.

ACI Mode–This is a completely different mode of operation for the Nexus 9000 switch. In this mode, the switch participates in a leaf-spine based architecture that is purely driven by application policy. It is in this mode that we are able to define application relationships, and imprint them onto the fabric.

 

ACI is meant to provide that translation service between apps and the network.

Cisco-ACI.jpg

As mentioned before, also pointed out in the article Cisco Nexus 9000 Series Switches Overview, the second mode that the Nexus 9000 series operates in, is ACI mode. This mode allows for enhanced programmability across a complete fabric of Nexus 9000 switches. With ACI as the SDN solution on top, the fabric acts like one big switch–forwarding traffic using a myriad of policies that you can configure.

  • 1/10G Access & 10/40G Aggregation (ACI)

48 1/10G-T & 4 40G QSFP+ (non blocking)–meant to replace end-of-rack 6500’s

36 40G QSFP+ (1.5:1 oversubscribed)–used as a leaf switch, think end of rack

  • 40G Fabric Spine (ACI)

36 40G QSFP+ for Spine deployments (non blocking, ACI only)

1,152 10G ports per switch

  • 36 spine ports x 8 line cards=288 leaf switches per spine
  • Leaf switches require 40G links to the spine

 

The line cards that support ACI will not be released until next year.

Spine line cards

  • 36x 40G ports per line card and no blocking

Supervisor Modules

  • Redundant half-width supervisor engine
  • Common for 4, 8 and 16 slot chassis (9504, 9508, and 9516)
  • Sandy bridge quad core 1.8 GHz
  • 16GB RAM
  • 64GB SSD

System controllers

  • Offloads supervisor from switch device management tasks
  • Increased system resilience & scale
  • Dual core ARM 1.3GHz
  • EoBC switch between Sups and line cards
  • Power supplies via SMB (system management bus)

Fabric Extenders

  • Supports 2248TP, 2248TP-E, 2232PP-10G, 2232TM-10G , B22-HP, B22-Dell

 

Reference From http://keepingitclassless.net/2013/11/insieme-and-cisco-aci-part-1-hardware/

 

More Cisco ACI Mode Topics

Cisco ACI, What is It?

Cisco Nexus 9000 Series Switches Overview

Cisco 9500 Nexus Switch Overview-Model Comparison

The 8-slot Nexus 9508 Switch Review

Read more
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