When someone talk about Cisco router, or Cisco switch with me, I’m very confused about this. Router? Switch? What are they? What are they used for? Oh, My Lady Gaga, complicated.
However, after I have found some details of router and switch, it seems a little interesting. Because both router and switch are tightly related to network, to internet. If you have PCs, if you need to email to somebody, or if you want to chat with friends, they are necessarily contained. Haha, eager to get more information of router and switch. I search many details and “the difference between router and switch” through Google. Now, I’d like share some key info about router and switch.
What’s a router? A router is a more sophisticated network device than either a switch or a hub. It is a device that forwards data packets across computer networks, and perform the data "traffic directing" functions on the Internet. On the Internet or on a large corporate network, for example, routers serve as intermediate destinations for network traffic. These routers receive TCP/IP packets, look inside each packet to identify the source and target IP addresses, then forward these packets as needed to ensure the data reaches its final destination. Routers for home networks (often called broadband routers) also can join multiple networks. These routers are designed specifically to join the home (LAN) to the Internet (WAN) for the purpose of Internet connection sharing. In contrast, neither hubs nor switches are capable of joining multiple networks or sharing an Internet connection.
And switch? A network switch or switching hub is a computer networking device that connects network segments. The term commonly refers to a multi-port network bridge that processes and routes data at the data link layer (layer 2) of the OSI model. By paying attention to the traffic that comes across it, it can "learn" where particular addresses are. For example, if it sees traffic from machine A coming in on port 2, it now knows that machine A is connected to that port and that traffic to machine A needs to only be sent to that port and not any of the others.
The two pieces of equipment (router and switch) look so similar and perform some similar functions, but each has its own distinct function to perform on a network. To be simple, switches create a network. Routers connect networks. A router links computers to the Internet, so users can share the connection. A router acts as a dispatcher, choosing the best path for information to travel so it's received quickly.
So what do you need? A router or switch? After got these above, you can make sure that which you need. And more information of Cisco sale, you can visit RouterSwitch.com.
The Cisco ASA 5505 Firewall is the smallest model in the new 5500 Cisco series of hardware appliances. Although this model is suitable for small businesses, branch offices or even home use, its firewall security capabilities are the same as the biggest models like 5510, 5520, 5540, etc.
The Adaptive Security technology of the ASA firewalls offers solid and reliable firewall protection, advanced application aware security, denial of service attack protection and much more. Moreover, the performance of the ASA 5505 appliance supports 150Mbps firewall throughput and 4000 firewall connections per second, which is more than enough for small networks.
The difference of the 5505 model from the bigger ASA models is that it has an 8-port 10/100 switch which acts as Layer 2 only. That is, you cannot configure the physical ports as Layer 3 ports, rather you have to create interface VlANs and assign the Layer 2 interfaces in each VLAN.
By default, interface Ethernet0/0 is assigned to VLAN 2 and its the outside interface (the one which connects to the Internet), and the other 7 interfaces (Ethernet0/1 to 0/7) are assigned by default to VLAN 1 and are used for connecting to the internal network.
Basic Steps to Configure Cisco ASA 5505:
Step1: Configure the internal interface vlan
ASA5505 (config)# interface Vlan 1
ASA5505 (config-if)# nameif inside
ASA5505 (config-if)# security-level 100
ASA5505 (config-if)# ip address 192.168.1.1 255.255.255.0
ASA5505 (config-if)# no shut
Step 2: Configure the external interface vlan (connected to Internet)
ASA5505 (config)# interface Vlan 2
ASA5505 (config-if)# nameif outside
ASA5505 (config-if)# security-level 0
ASA5505 (config-if)# ip address 184.108.40.206 255.255.255.0
ASA5505 (config-if)# no shut
Step 3: Assign Ethernet 0/0 to Vlan 2
ASA5505 (config)# interface Ethernet0/0
ASA5505 (config-if)# switchport access vlan 2
ASA5505 (config-if)# no shut
Step 4: Enable the rest interfaces with no shut
ASA5505 (config)# interface Ethernet0/1
ASA5505 (config-if)# no shut
Do the same for Ethernet0/1 to 0/7.
Step 5: Configure PAT on the outside interface
ASA5505 (config)# global (outside) 1 interface
ASA5505 (config)# nat (inside) 1 0.0.0.0 0.0.0.0
PS: PDATE for ASA Version 8.3
From March 2010, Cisco announced the new Cisco ASA software version 8.3. This version introduced several important configuration changes, especially on the NAT/PAT mechanism. The “global” command is no longer supported. NAT (static and dynamic) and PAT are configured under network objects. The PAT configuration below is for ASA 8.3 and later:
object network obj_any
subnet 0.0.0.0 0.0.0.0
nat (inside, outside) dynamic interface
Step 6: Configure default route towards the ISP (assume default gateway is 220.127.116.11)
ASA5505 (config)# route outside 0.0.0.0 0.0.0.0 18.104.22.168 1
The above steps are the absolutely necessary steps you need to configure for making the appliance operational. Of course there are much more configuration details that you need to implement in order to enhance the security and functionality of your appliance, such as Access Control Lists, Static NAT, DHCP, DMZ zones, authentication etc.
---From Tech 21 Century
Cisco ASA 5500 Series: Stop security attacks before they affect business continuity. Cisco ASA 5500 Series Adaptive Security Appliances provide intelligent threat defense and highly secure communications services. These solutions help organizations lower their deployment and operational costs while delivering comprehensive network security for networks of all sizes
Router-switch.com, your reliable source for new & used Cisco ASA 5500 Series… More info.. click RouterSwitch.com to see…
Zoya Fallah shared her fantastic experience of Her first Cisco ūmi Call With her dad with Cisco readers and friends, details from her description: “Recently, my dad bought me a Cisco ūmi Home TelePresence system so we could keep in touch face to face. I must say, being able to see him in my living room whenever I want is fantastic. Our first call was ideal, because his cousin Ruthie happened to be visiting from Ohio. I’d never met her before (although she says we met when I was a baby). It was so cool to “meet” her in person, and put a face to the name I’d heard for so long. It really was like being there.” In some ways, it indicates a new level of video chat.
Nowadays, with the development of Information Technology, video call, video chat, and video conferencing have been built around us and our connecting world. Video has lost its mystery since we can carried a device mobile phone, digital camera or camcorder, iPhone, iPad or Flip capable of recording video. What’s more, in an age of YouTube and Facebook, people can share their favorite experience and story with people who come from all over the world.
Today a typical home broadband connection can easily handle full-screen standard definition video and a good one can do HD. In addition, nearly all laptops feature built-in cameras. Indeed, video chat and video call change our daily life.
Mobile devices, however, are still a challenge because of the challenges of moving quality video over wireless networks. So network manufacturer such as Cisco, Netgear, TP-LINK, Huawei, trying to find a best solution to improve people’s video chat and call. 3G, 4G, Wi-Fi, in some sense, achieved the situation on video chat.
It’s obvious that video calling and chat are becoming increasingly important. Achieving its full benefit is going to require continuing network improvement, especially in wireless. With the effort of network manufacturer, we hope that we can enjoy the convenience that brought from Information Technology.
Cisco Notes: Besides Cisco’s new ūmi Home TelePresence system, Cisco supplies different types of Cisco IP Phones VoiP to business and clients. More info about Cisco IP Phones VOIP series you can visit RouterSwitch.com to see.
Cisco Catalyst 3560 Series, fixed configuration Enterprise class switch with PoE functionality in Fast and Gigabit Ethernet configurations, is intended to provide high-performance network switching while reducing power consumption relative to previous Cisco switches for use in corporate networks. It could also be used for environments in branch office.
Catalyst 3560 Cisco Switches support network switching for voice and video data. So you can use the Express Setup utility that ships with Cisco 3560 switches to configure a Cisco 3560, so that it can be attached to the network.
How to Configure Cisco 3560 Series? Do the following guide to finish your Cisco 3560 configuration.
Things you'll need: Ethernet cable
1.Disconnect any cables connected to the switch.
2. Power the switch by connecting the AC power cord to the switch power connector and to a grounded AC outlet. This will start the power-on self-test (POST) process on the switch. The LED lights on the front of the switch will blink during the POST.
3. Wait for the "SYST LED" light on the front of the switch to turn solid green, which indicates that the POST is complete. Press and hold the "Mode" button on the front of the switch for three seconds as soon as the POST is complete. When all LEDs above the "Mode" button are green, release it.
4. Connect one end of a Category 5 Ethernet cable to any Ethernet port on the switch front panel, and the other end to the Ethernet port on your computer. Open a web browser on your computer and type "10.0.0.1" in the Address bar, then press "Enter". This opens the "Express Setup" page and displays the "Network Settings" fields.
5. Enter the switch's IP address in the "IP Address" field. Click the drop-down arrow in the "IP Subnet Mask" field and select an IP Subnet Mask. Enter the IP address of your network's gateway device, such as a router, in the "Default Gateway" field.
6.Type a new password in the "Switch Password" field. The password can be up to 25 alphanumeric characters long, may start with a number, and is case-sensitive. Re-type your password in the "Confirm Switch Password" field.
7. Type a name for the switch in the "Host Name" field. The host name can be up to 31 alphanumeric characters long.
8. Enter date and time information in the "System Date", "System Time" and "Time Zone" fields.
9. Click the "Submit" button. This exits Express Setup mode and completes the setup configuration.
References: Information from Cisco on configuring the Catalyst 3560 Switch.
Resources: Cisco Catalyst 3560 Series Switches homepage.
How do I reset the password on my Cisco router? I bought a Cisco 1700 router from an auction, but there is a password. How can I reset the router to original factory specifications?
Sky sagem wireless router reset password? I just got this sky wireless router second hand and it has a password set on it. i tried to press the reset button at the back but it does not do any thing, it still comes as a password is set.
How to reset password on dlink wireless router? I have a dlink wireless router model number DIR 825 . It works good but I am trying to access internet on my ipod and the password i have set is incorrect , this also happened when i tried to access internet on my laptop. When i first set up my ps3 i dont recall having to put a password in but this was when i first got the router. How do i reset the router password or find out what the password is AND if i reset the password or reset my router will my ps3 have to be reconnected or will it stay?
How to reset password on a router? I recently acquired a linksys router (used) and need to know how to reset the password so that I can use it. Also, is there any way to modify a router to be useful as a cell/wifi blocker, or as a signal booster?
----From Yahoo Answers
To reset password on a Cisco/D-link/Linksys/Netgear router is a very common problem among people who want a secure network environment for surfing on the internet. If you are confused with the complicated procedure to reset or change the password on a router, or if you are trying to configure a Cisco router, but a password is blocking you from enable mode, don't worry, just do the steps as follows, password reset on a router is no longer upset to everyone.
First, be informed that what you need:
• Cisco Router
• Internet Connection
• Blue Serial Cable
Guide for You to Reset Password on a Cisco Router:
1. Download a program called Putty from the first resource site below.
PuTTy is a terminal emulator application which can act as a client for the SSH, Telnet, rlogin, and raw TCP computing protocols (PuTTy on Wikipedia).http://en.wikipedia.org/wiki/PuTTY
2. Connect one end of the blue serial cable to the Cisco Router and the other to your computer. Open up the Putty program on your computer and select the radio button next to "serial" on the right-hand side of the start window. Click on the "Open" button in the bottom right-hand corner of the Putty start window to open the terminal.
3. Power the Cisco Router on. As soon as the router begins loading in the green and black Putty terminal window, press the "Ctrl" and "Break" keys simultaneously until its going into rommon mode.
4. Once in rommon mode, you have to change the configuration register number to make the router boot from a blank configuration file. For the 2800 series Cisco Routers, the command "confreq 0x2142", changing the register number to 2142, worked. Search on cisco.com for information on your particular Cisco Router Series.
5. Type the restart command in rommon mode, which is "reset". This will boot the router up again. When it is finished, you should be able to type "en" to get into enable mode without a password.
6. Once you change the running-config in RAM and save it to the startup-config in NVRAM, remember to change the configuration register number back to its default (usually 0x2102). This is important if you change anything on the running-config. ---by Gabe
Easy six steps help you finish resetting password on a Cisco router. Easy instruction, easy to follow.
Cisco, famous for designs and sells consumer electronics, networking, voice, and communications technology and services, announced new wireless hardware and software solutions to help extend corporate wireless networks to home teleworkers in March, 2011, incorporating existing control, management and security infrastructure. The new devices will be available in May, 2011.
he Cisco OfficeExtend solution includes new access points and a full line of wireless controllers that offer high-performance wireless connectivity and include the industry’s first dual-band 802.11n access point specifically designed for teleworkers.No intervention is required from end users, lowering information technology support requirements and overall cost of ownership by allowing IT professionals to remotely manage home access points alongside the corporate infrastructure.
The wireless controllers are designed to support the deployments of increasing scale and sophistication across any home or office environment. The new Cisco Catalyst 6500 Series Wireless Service Module supports up to 500 corporate and “teleworking” access points and can be scaled to support the increasing number of mobile devices running rich-media applications like telepresence, voice and virtual desktops.
The new Cisco Aironet 600 Series OfficeExtend access points incorporate an 802.11n dual-radio design that supports both 2.4 and 5 GHz radio bands, allowing access to the least congested and highest performance band available. By providing separate corporate and personal Service Set Identifiers (SSIDs), the access points segment private traffic from corporate traffic, allowing personal traffic, such as in the home, to be directed to the Internet rather than to corporate controllers. Other features include four integrated Ethernet ports for connecting IP phones, printers and other network devices in the home office to deliver a complete teleworking mobility solution.
For smaller networks, the new Cisco 2500 Series Wireless Controllers and software for the Cisco ISR G2 Services-Ready Engine offer 802.11n service for up to 50 access points and 500 clients. An innovative delivery model gives customers two options for deploying controller functionality, either physically or online.
The new Cisco Catalyst 6500 Series Wireless Services Module chassis supports up to 500 corporate and teleworking access points and allows customers to scale large wireless LANs to support the increasing number of mobile devices running rich-media applications such as Telepresence, voice and virtual desktops. The Cisco Wireless Service Module 2 for the Catalyst 6500 also includes Cisco CleanAir technology for interference management, Cisco ClientLink beamforming technology to boost client performance, and Cisco VideoStream technology to optimize multicast video over wireless.
Ron Hutchins, chief technology officer of the Georgia Institute of Technology, comments, “Migrating to the second generation wireless service module will allow us to effectively scale our wireless system to meet the demands of students and faculty. Wireless has become the preferred network connection method and, therefore, has become a critical service for us. Moving to the next-generation service module allows us to protect our existing investment and be ready for ever increasing wireless networking demands.”
Indeed, the new Cisco Wireless Solutions Extend Corporate Network Performance From Headquarters to the Home for Teleworkers may bring more convenience and tight connection between home and company. Yeah, new solution, new expectation in network world.
Have you ever been frustrated with home network setting? Definitely, I'm sure you have. Yeah, it's very easy to take a router or IT products from a store.But after that, setting up network may make you upset, you may be patientlessconfused and confused with the long instruction and using guide of the router. Just like these following friends: "How do you setup a Cisco Linksys Wireless N Broadband Router WRT160N V3?" "How do i hook my linksys wireless router up to my att modem?" To set up your network, you need to know that how to configure proper IP addressing, lock down the network from intruders, create accounts for everyone who gets access, and set up sharing for files and folders and so on. Oh, it seems a little difficult to finish these tasks. It doesn't mattter, only easy five steps help you fix it.
Guide to Set Up Your Network:
Step one: Connect Your Router
The router is the gateway between the Internet and your home network. It is also the means by which all the devices on your network communicate with one another. In general, go with an 802.11n router for the best performance. You will also want to ensure that any device will connect to the router also has an 802.11n network adapter. These devices are your network "clients." New laptops and netbooks already have 802.11n adapters. For older laptops or desktops you can purchase compatible "n" adapters. Once you've got the right router, you have to set it up, and the first step is to physically connect your router to a modem provided by your ISP with an Ethernet cable. First, unplug or turn off the cable or DSL modem.Power up your wireless router and connect the network cable that most likely comes with it into the port on the router that is labeled "Internet" or "WAN." Connect the other end to the cable or DSL modem and power up the modem.
Don't attempt to connect any devices such as laptops or tablets until you have a good strong, signal indicating a WAN connection on both the router and modem.
Step two: Access the Router's Interface and Lock it Down
The next step involves getting into the router's interface (called by some companies the management console). This is done by connecting a laptop to the router and then accessing the interface via browser.Routers usually ship with a default IP address, administrator account and password. For example, most Cisco/Linksys routers have the default IP address of 192.168.1.1 and the default administrator account is "admin" and the password is "admin." What you want to do is to change your laptop's IP settings to match those of the router's to connect to it for configuration. This allows the laptop to communicate with the router, so you can access your router's software for setup via the laptop. Connect an Ethernet cable to one of the LAN ports on the router and the other end to the Ethernet port of your laptop. On a Windows 7 machine that's connected to the router by Ethernet, for example, you would go into the Control Panel and click open "Network and Internet" and then "Network and Sharing Center."...
Once you've applied the changes, open up a browser and go the Web address of (in our example,) the Cisco/Linksys' interface by typing: http://192.168.1.1 and using the account name "admin" and password "admin." Then you are all set to configure security and other settings.
Most router companies use the same default IP address, admin account, and passwords on all their routers. Here's a table of the most commonly used ones, but your router's documentation will tell you the specific IP address and account information.
Router Address Username Password
3Com http://192.168.1.1 Admin admin
D-Link http://192.168.0.1 admin
Cisco/Linksys http://192.168.1.1 admin admin
Netgear http://192.168.0. admin password
Step three: Configure Security and IP Addressing
The next step is getting the security, SSID and IP addressing settings right after you've accessed the router. You make all of these changes within the router's management interface. These settings are typically under the "Basic" settings of the interface. They may also be under "Security" or "Wireless Settings."
Router interfaces vary, so check with the manufacturer if you can't find the settings to configure on the below steps within the interface pages:
1. Change the default administrator password.Some networking equipment forces you to do so, once you've accessed the Web-based interface, but many consumer routers don't. The settings for the admin password are usually under the "System" tab or area or page of the interface. You can just enter in a new password in the new password field.
2. Change the router's default SSID. The SSID is the broadcasted name of your wireless network. That's the name that shows up as the network's name when you scan for available networks. Use a unique name that your neighbors aren't using for their routers, to avoid confusion.
3. Assign security. Newer routers may be set by default to automatically configure security by using WPS (Wi-Fi Protected Setup).Some routers allow you to enter a string of 64 hexadecimal digits which provides strong security, but most have you create an 8 -to-63-letter passphrase. If you are creating a passphrase (or password) be sure to create a strong password that would be hard to guess.
4. Set up IP addressing. For most networks, the router can be kept at its default DHCP setting. This means the router will dole out IP addresses to clients that connect to the network, leaving you without any IP addressing management to do. Remember, hackers know what the default IP address of the most common routers (even though it's really tough for them to get to due to the fact that your IP addresses on your network are private). For instance, I would change my Cisco/Linksys router's network from 192.168.1.1 to something like 192.168.1.3.
5. Disconnect the laptop and reboot it. When the laptop comes back from reboot you should see the SSID name of your wireless network and be able to connect to it with the passphrase you created. For those who anticipate connecting servers, NAS device or any device that you may access from outside your network, best practice is to configure DHCP Reservation. For example, my router IP is 192.168.1.1, I can give my email-server an IP address of 192.168.1.2. I can give a third device, say my NAS server for instance, an IP address of 192.168.1.3, and so on.
Reserving IP addresses is good practice for devices you want to access remotely, because otherwise when the IP address leases expire you won't be able to perform remote access. Don't forget to assign the reserved IPs as static addresses on the devices for which you made reservations.There are various ways to do this, on Windows servers and machines you can assign an IP address though the Network settings Control Panel. Other devices, such as NASes, have areas in their management console where you can assign an IP address. It really depends on what device you want to set a static address for, so check with the vendor if you aren't sure.
Notice: If you are using the router as an access point, bridge or to extend the signal of an existing router on a network, you will want to turn off DHCP completely. Having two routers performing DHCP on the same network can result in myriad connection issues. However, for most home networks, having the router set to use DHCP will suffice.
Step four: Set Up Sharing and Control
Since you have a network set up, you can set up a way for everyone to access data on the network. With Windows 7 clients, this is achieved by creating a HomeGroup, a user-friendly way to create a workgroup. A HomeGroup is a group of computers on a home network that can share files and printers. Using a HomeGroup makes sharing easier. You can share pictures, music, videos, documents, and printers with other people in your HomeGroup. Other people can't change the files that you share unless you give them permission. You can help protect your HomeGroup with a password, which you can change at any time. Computers must be running Windows 7 to participate in a HomeGroup. HomeGroup is available in all editions of Windows 7. In Windows 7 Starter and Windows 7 Home Basic, you can join a HomeGroup, but you can't create one.
When a Windows 7 laptop first connects to the network, the user will be prompted to set the current network location. Ensure that the location is set to "Home network" (you can check it in Network and Sharing Center) because HomeGroup only works on networks set to the Home location.
Open up "HomeGroup" in the Control Panel, and then click "Create a HomeGroup." For every Windows 7 client that you want to give access to the HomeGroup, open HomeGroup in the Control Panel of those machines and then click "Join now" (those machines have to physically or wirelessly connected to the network).
During the process of setting up or joining a HomeGroup, you can choose the libraries, printers or files and folders you want to share. (see next step for details).
If you have a network with different version of Windows running, then you are going to create a standard Workgroup. Click Start, right-click My Computer, and then click Properties. In System Properties, click the Computer Name tab. Click "Change," select "Workgroup," and enter a workgroup name. Click OK to apply the change. Do the same thing for all computers that you want sharing data on the network.
Step five: Set Up User Accounts.
In most business networks, users access the network by logging in with their user account and password. Corporate IT networks set up user accounts to keep tabs on who is accessing the network and when they are accessing it. User accounts provide a way to establish user access control. Perhaps there's some data on the network some users should have access to and some shouldn't. Maybe some users should only be able to read certain files, while others should be able to change files.
You can establish this same kind of access in your home network, especially once you have a HomeGroup or Workgroup defined. It's quite easy to set up user accounts in Windows:
In Windows 7's Control Panel, select the User Accounts icon. User accounts will let you configure your account and its settings.
To add and configure other users, from User Accounts, click on "Manage User Accounts," and then click on the "Advanced" tab.
Under "Advanced User Management" click "Advanced" to open up Local Users and Groups.
Right-click on either "Users" or "Groups" to add either to your network.
If you have a number of people accessing your network and you want to control access to the data on it, you may also want to set up permissions for files and folders. Create a user account for every family member and then right click on the folder, click "Properties" and then the "Sharing" tab. You can add the family members that you want to give access to folder to and exclude the ones you don't. You can also right-click on each Library to select the specific users you want to share with. Right-click on a printers to pull up the "Sharing" tab to setup shared access.
Unless you have a lot of users connecting to your network, you most likely won't need to create user groups, but it's a good idea if you do anticipate a number of users connecting (like for a small business) and you want to give certain groups access to certain files and folders.
If you've gotten this far and performed all the steps that apply to you, you should have a functional, secure, and robust network set up. Of course, there are many other advanced steps you might want to take, such as setting up remote access, setting up port forwarding, automating backup across your network, or deploying a NAS. Stay tuned for step-by-step guides for all these networking tasks.
After knowing about the very details of setting up your network, try to set it up as the step when you are in need. Besides, if you need to buy a router or other Cisco network equipments, to visit here: http://www.router-switch.com/ more info for you to know routers, swithches, firewall security well.
This automated message is the first article of your blog. It will help you get started with OverBlog. You can edit or delete it by going to the "Publish" section of your administration page.
Hope you'll enjoy blogging with us!
The OverBlog team
PS: In order to log in to your administration panel go to OverBlog portal.