In this article we will introduce the new Cisco 4451-X Integrated Services Router, which builds on the concept of
the truly Application Experience router by integrating multiple services into a single platform that can provide all the services a typical branch office needs. The services include increased
capacities for routing, switching, unified collaboration, security, WAN acceleration, application optimization and Application Visibility and Control (AVC). At the same time, the new routers are
designed for expansion that can deliver increased performance and capabilities over time without the need for expensive system upgrades or hardware as remote sites grow.
So what are the main features of Cisco 4451-X isr, benefits, capabilities, specs, software, modules, etc.? We will
list more questions about Cisco 4451-X series, you can check the main points that you want to get…
Q and A: Cisco 4451-X Integrated Services Router
Q. What are the key new features and changes that
are being introduced in the Cisco 4451-X?
A. The Cisco 4451-X offers:
● Default forwarding bandwidth of 1 Gbps upgradable to 2 Gbps with a software-activated upgrade
● The ability to house three network interface modules (NIMs) and two enhanced service modules (SM-Xs)
Q. Where do I position the Cisco 4451-X in
comparison to the Cisco 3900 Series and Cisco ASR 1000 Series Aggregation Services Routers?
A. The Cisco 4451-X is positioned for high-end enterprise
branch offices or enterprise headend where there is a performance requirement of 1 to 2 Gbps with services. Performancewise the Cisco 4451-X is positioned between the Cisco 3945E ISR and the
Cisco ASR 1001.
Q. What software is the Cisco 4451-X capable of
A. The Cisco 4451-X Series runs the Cisco IOS ® XE
Software. The initial version of software release will be the Cisco IOS XE Software Release 3.9.1 for the Cisco 4451-X.
Q. Does the Cisco 4451-X run a similar software
release as the Cisco ASR 1000?
A. Yes. The Cisco 4451-X is similar to the Cisco ASR 1000 in
terms of the software release that it runs on the system.
Q. Are the Cisco ASR 1000 Shared Port Adapter (SPA)
cards supported on the Cisco 4451-X?
A. No. SPAs are not compatible with the Cisco
Q. Can the NIMs or service modules available on the
Cisco 4451-X work on the Cisco ASR 1000?
A. Neither NIMs nor service modules will work with the Cisco
ASR 1000 Series.
Q. Can I use the enhanced high-speed WAN interface
cards (EHWICs) available on the Cisco 1900, 2900, and 3900 Series ISRs on the Cisco 4451-X?
A. EHWIC modules available on the Cisco Integrated Services
Routers Generation 2 (ISR G2) routers will not work with the Cisco 4451-X. The Cisco 4451-X is targeted at high-end branch-office environments, making most EHWICs unapplicable. Also, the newer
NIM architecture allows for faster, more capable modules on a high-end platform.
Q. Can I use the NIMs on the Cisco 1900, 2900, and
3900 Series ISRs?
A. No. NIMs are designed for a newer architecture and will
not work on the Cisco 1900, 2900, and 3900 Series Routers.
Q. Can I use the Cisco Unified Computing
System ™ (Cisco UCS ®) E-Series Service Modules available on the Cisco 2900 and 3900 Series ISRs on the Cisco 4451-X?
A. Yes, the Cisco UCS E-Series Modules are supported on the
Q. Can I use the Cisco Enhanced Service T3/E3 module
(SM-X-1T3/E3) available on the Cisco 2900 and 3900 Series ISRs on the Cisco 4451-X?
A. Yes, the Cisco Enhanced Service T3/E3 module
SM-X-1T3/E3is supported on the Cisco 4451-X.
Q. What memory upgrade options are available on the
A. The Cisco 4451-X has separate data and control-plane
memory. The control-plane memory comes as 4 GB default, upgradable to 16 GB. The data-plane memory comes as 2 GB default and is not upgradable today.
Q. How many dual inline memory modules (DIMMs) does
the Cisco 4451-X have?
A. The Cisco 4451-X has three DIMM slots. Two slots are used
for control-plane and one slot for data-plane memory.
Q. In the case of control-plane memory, can I put,
say, a 4-GB DIMM in one slot and a 2-GB DIMM in the other slot?
A. No. Like the Cisco 3900 Series, the Cisco 4451-X expects
both the DIMM slots to have the same size of memory; that is, either 4-GB memory in both slots, making the control-plane memory size total 8 GB, or 2-GB memory in both slots, making the
control-plane memory size total 4 GB. This setup is necessary because these platforms interleave memory devices for faster access.
Q. Do all four ports with both RJ-45 and Small
Form-Factor Pluggable (SFP) FPGE connections support failover?
A. No. The four front-panel GigabitEthernet ports do not
support auto failover. The default media-type is RJ-45 and the user has to manually change the media-type to SFP so that the SFP connection comes up.
Q. Is MDI crossover (MDI-X) supported on the four
onboard RJ-45 Ethernet interfaces?
Q. What type of backplane is used between components
in the Cisco 4451-X?
A. The Cisco 4451-X uses the Multigigabit Fabric (MGF) for
Layer 2 connectivity between the modules. The MGF can provide either 2 Gbps to all NIM slots or up to 10 Gbps to all SM-X slots. The MGF is completely nonblocking and can forward in excess of 50
Q. What power cables work with the Cisco
A. All power-supply options for the Cisco 4451-X use a
standard IEC C13 connector. No special IEC C15 cord is necessary for the Power over Ethernet (PoE) power supply, unlike the Cisco 3900 Series because higher-efficiency power supplies (85 percent)
are used in the Cisco 4451-X. This cord thus helps lower the maximum current these power supplies can draw.
Q. Are the Cisco 4451-X power supplies field
replaceable units (FRUs)?
A. Yes. The power supplies can be replaced in the
Q. Are the Cisco 4451-X power supplies
A. Yes. You do not need to power down the chassis to insert
or remove a power supply. Also, unlike the Cisco 3900 Series, the bezel and fan tray can remain in place while a power supply is replaced.
Q. Does the Cisco 4451-X have a DC power-supply
A. No, there is no DC power-supply option for the Cisco
4451-X at first customer shipment (FCS). This enhancement is planned for future deployments.
Q. What are the power options for PoE on the Cisco
A. The Cisco 4451-X has two PoE options. Two of the FPGE
interfaces can be powered with the addition of a dedicated power-conversion module installed into the system (PWR-GE-POE-4400). This module does not require a higher-capacity system power supply
and will work with the default 450W power supply. The PoE power for the FPGE ports is completely independent from PoE power to the rest of the system.
The Cisco 4451-X also has the option of a PoE power supply to provide PoE power to modules in the system such as
an Ethernet switch module. This power supply actually includes two components as a single part: a higher-capacity 1000W system power supply and a PoE conversion module that converts system power
into PoE for modules within the system. The Cisco 4451-X can accept up to two PoE power supplies and power-conversion modules for redundant operation or PoE Boost Mode.
Q. What is the difference between PoE Redundancy
Mode and PoE Boost Mode?
A. Both modes require that two power supplies be installed
in the Cisco 4451-X. Redundancy mode provides 500W of PoE power to the chassis - the maximum amount a single power supply can offer - meaning that if a power supply fails the second power supply
will be able to continue to deliver 500W of PoE power. PoE Boost Mode provides 1000W of PoE power - the maximum amount of power from both power supplies combined - meaning that if a single power
supply fails the second redundant power supply will be able to provide only 500W of PoE power, cutting the amount of PoE power available by half.
Q. With redundant power supplies can we switch the
power to primary when it fails and the router is running on secondary power supply?
A. There is no concept of primary or secondary power supply
for the Cisco 4451-X. The power supplies are simply redundant and when one fails the other power-supply unit (PSU) takes over by transparently providing power to the entire system. No switching
or intervention is required. Both share the load when running in the system; however, when one fails the other provides power to the complete unit. When the failed PSU is replaced with the new
PSU in the system, the two power supplies are redundant.
Q. Are the PoE interfaces
A. PoE+ is available on the new SM-X Ethernet switch modules
as well as on the FPGE ports.
Q. How does the system fan speed
A. The Cisco 4451-X uses both an inlet temperature and an
altitude sensor to determine the best fan-speed setting. There are four different inlet temperature ranges and five different altitude ranges for a total of 20 possible different fan-speed
settings. The addition of an altitude sensor is an industry first for a branch-office platform. With altitude data incorporated into the fan speed, the system can account for the density of air
cooling in order to select the most efficient, and quietest, fan-speed setting. All system fans run at the same speed.
Q. Can the Cisco 4451-X handle the failure of a
A. Yes. A fully loaded system will function normally below
6000 feet (1.82 km) with a single fan failure. In the case where the Cisco 4451-X is above 6000 feet and in 32ºF (40ºC), it may shut down because of overheating. The system is rated to operate in
32Fº at up to 10,000 feet (3.05 km).
Failure of a power-supply fan will likely result in overheating and shutdown of the power supply. If power
redundancy is required, you should install two power supplies.
Q. Do we have the airflow cubic-feet-per-minute
(cfm) measurements for the fan on the Cisco 4451-X?
A. The airflow information for the Cisco 4451-X
● Maximum: 125 cfm
● Typical: 56 cfm
Q. Is a rack-mount kit available for the Cisco
4451-X? How do I order it?
A. Yes. A rack-mount kit is part of the default accessory
kit, and it is shipped with the Cisco 4451-X. Order part number ACS-4450-RM-19= for the spare 19-inch rack-mount kit for the Cisco 4451-X. By default the router will be shipped with this default
19-inch rack-mount kit.
Q. Is a 23-inch telco rack-mount kit available for
the Cisco 4451-X?
A. Order part number ACS-4450-RM-23= for the spare 23-inch
rack-mount kit for the Cisco 4451-X.
Q. How can I calculate the mean time between
failures (MTBF) information for the Cisco 4451-X with the plugged-in modules? Is a MTBF calculator available, such as for the ISR G2 routers?
A. This information is not currently
Q. What else is part of the default accessory
A. The default accessory kit includes:
● Mechanical ground lug 90 feet per screw kit 19-inch rack-mount kit
● Regulatory Compliance and Safety Information (RCSI) roadmap document
● Plastic bag
● Shipping label
● Document pointer card for Cisco 4451-X
Q. What is the purpose of the GigabitEthernet0 on
the Cisco 4451-X?
A. The GigabitEthernet0 is the dedicated management port on
the Cisco 4451-X. This interface connects directly to the control-plane CPU and is ideal for managing the router through Telnet, Secure Shell (SSH) Protocol, Simple Network Management Protocol
(SNMP), and other management protocols. It is also ideal for downloading software images, uploading logs, and connecting to other management devices such as RADIUS, Network Time Protocol (NTP),
Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), and TACACS servers. This interface should never be used for forwarding normal data traffic through the system because every
packet goes directly to the control-plane CPU, bypassing the platform data plane. Because of this sensitivity, G0 is in a dedicated Mgmt-Intf Virtual Route Forwarding (VRF) port by default. This
setup prevents accidental routing mistakes that could cause data traffic to be routed to the management network.
Q. Is MDI-X supported on the management RJ-45
Q. Is a console port available on the Cisco
A. The Cisco 4451-X has the option of the regular RJ-45
console port as well as the USB console port. As with the ISR G2 routers, only one console port can be used at a time, with preference given to the USB console port.
Q. Is online insertion and removal (OIR) supported
on the Cisco 4451-X?
A. Yes, OIR is supported on the Cisco 4451-X for the
● Surprise insertion or removal of any NIM in any of the NIM slots
● Surprise insertion or removal of any SM-X in the SM-X slots
● Surprise insertion or removal of any power supply or system PoE conversion module
● Surprise replacement of the system fan tray; note, however, that this replacement must take place quickly
enough that the system does not overheat, and depending on altitude and ambient temperature, the amount of time can vary greatly
Note that SM-X and NIM modules allow replacement only for
like-to-like modules. A faulty module can be replaced with a good module of the same type but cannot be replaced with a completely different module of a different type.
Q. Will the NIMs and service modules continue to
function as they normally do after OIR on the Cisco 4451-X?
A. Yes, provided the OIR was carried out using a
Q. What type of Cisco IOS Software is available for
the Cisco 4451-X?
A. The Cisco 4451-X runs the same feature-rich Cisco IOS XE
Software as the current-generation Cisco ASR 1000 Series. By using the same software release as the Cisco ASR 1000 Series, the Cisco 4451-X benefits from a rich history of branch-office feature
development as well as ongoing feature development.
Q. What software options are available for the Cisco
A. One change that customers like is the Cisco IOS Software
images available on the ISR G2 routers, which reduce numerous software images into one. Therefore, the Cisco 4451-X has a single Cisco IOS XE Software image. This image is known as a universal
image. It contains all features and functions in a single software image. You can selectively enable functions within this universal image by using Cisco Software Activation Licenses that
activate capabilities within that image. You now need only a single Cisco IOS XE Software image for the router regardless of the features or functions you need for any particular area in your
Q. What is a universal image?
A. For the Cisco 4451-X, Cisco IOS XE Software is delivered
in a single universal Cisco IOS XE Software image per platform for each release. With the universal image you need to choose only the Cisco IOS XE Software release you need for your network. With
the Cisco 4451-X, the universal image includes all features and options.
Cisco Software Activation is used to enable feature packages such
as, for instance, the Security, Application Experience, or the Unified Collaboration technology package. This new model greatly simplifies the effort required to track license compliance across a
large number of devices and reduces the number of images that must be supported in a network. Simultaneously, the number of feature packages is also greatly simplified so that now only major
feature packages, including the IP Base default package, are available with a single universal image.
Q. What does the software packaging and licensing
model look like for the Cisco 4451-X?
A. The Cisco 4451-X has packaging and licensing similar to
that of the Application Experience routers (refer to Figure 1):
● IP Base Technology Package (default)
● Application Experience Technology Package (AppX)
● Security Technology Package (SEC) and High Security (HSEC) for strong encryption
throughput and tunnel count
● Unified Collaboration Technology Package (UC)
Packaging and License Model for Cisco 4451-X
Q. Is the software packaging on the Cisco 4451-X
similar to that for the ISR G2, which is Right-To-Use (RTU)-based?
A. The Cisco 4451-X has software packaging similar to that
of the ISR G2, and it is RTU, also known as honor-based. A 60-day evaluation license for all features is included with every Cisco 4451-X. After 60 days, an evaluation license automatically
converts to a RTU license. At that point, it is expected that a RTU license will be purchased for that feature on that platform. This model is the same as that for the ISR G2.
Q. What about export and import requirements for
A. The strong enforcement of encryption capabilities
provided by Cisco Software Activation satisfies requirements for the export of encryption capabilities, so non-k9 images are no longer needed. However, some countries have import requirements
that require the release of the source code for strong payload (VPN) encryption features. To satisfy the import requirements of those countries, a universal image that lacks strong payload
encryption is available. This image is identified by the “universalk9_npe” designation in the image name. The universal image with strong payload encryption is recognized by the “universalk9”
tag. This image satisfies both import and export requirements for virtually all countries.
Q. Is a High Security (HSEC) license offered on the
Cisco 4451-X to achieve greater cryptographic tunnel count and throughput?
A. Yes, an HSEC license is required to achieve more than 225
cryptographic tunnel count and 170 Mbps of total IP Security (IPsec) throughput (bidirectional traffic).
Q. What is an HSEC license?
A. An add-on license above the Security (SEC) technology
package license, known as HSEC, provides export controls for strong levels of encryption. HSEC is available to customers in all currently nonembargoed countries as listed by the U.S. Department
of Commerce. Without an HSEC license, SEC performance is limited to 225 tunnels and a total of 170 Mbps of IPsec throughput. An HSEC license removes this limitation. Because of these export
control requirements, the HSEC license is the only license on the Cisco 4451-X that requires installation of a license key file to activate. In other words, HSEC is not a RTU
Q. What types of licenses are available for the
Cisco ISR G2 routers?
A permanent license never expires. When a permanent license is installed on a system, it is good for that feature
set for the life of the router, even across Cisco IOS XE Software releases. For example, when a Unified Collaboration, Security, or Application Experience (AppX) license is installed on a system,
the subsequent features for that license are activated even if the system is upgraded to a new Cisco IOS XE Software release. A permanent license is the most common license type used when you
purchase a feature set for a device.
A temporary license, sometimes referred to as an evaluation license, is good for a limited amount of time. The
Cisco 4451-X includes a full set of 60-day temporary licenses for the AppX, Unified Collaboration, and Security feature sets. You can activate and deactivate these licenses at any time to
evaluate a feature set before making the decision to purchase and upgrade to a permanent license. You also have some flexibility when you need to upgrade to a permanent
● Only the time a temporary
license is active is counted against the available time on the license. When a temporary
license expires, you cannot extend it. However, in extreme cases the Cisco Technical Assistance Center (TAC) can issue new emergency temporary licenses to aid in troubleshooting a
A counted license actually counts something in the system. A typical example is the number of Cisco Unified Border
Element or SRST Licenses possible on a system. These licenses are analogous to the counted paper licenses used with systems in the past. However, the new Cisco Software Activation infrastructure
greatly simplifies the management of these licenses.
Q. Is hardware or software high availability
supported on the Cisco 4451-X?
A. The Cisco 4451-X does not support hardware or software
Q. Is the Cisco Locator/ID Separation Protocol
(LISP) supported on the Cisco 4451-X?
A. Yes, LISP is supported on the Cisco 4451-X.
Q. Is In-Service Software Upgrade (ISSU) supported
on the Cisco 4451-X?
A. ISSU is not supported on the Cisco 4451-X.
Q. Is Suite-B or Next-Generation Encryption (NGE)
support available on the Cisco 4451-X?
A. Yes, Suite-B and NGE support is available on the Cisco
4451-X as part of the initial release.
Q. Is SSLVPN supported on the Cisco
A. No. The Cisco 4451-X does not support
Q. What VPN methods are supported on the Cisco
A. The Cisco 4451-X supports all current and any new VPN
technologies such as Easy VPN, Group Encrypted Transport VPN, Dynamic Multipoint VPN (DMVPN), and Cisco IOS FlexVPN that are supported on the ISR G2 or ASR 1000 Series.
Q. Is the intrusion prevention system (IPS)
supported on the Cisco 4451-X?
A. No, IPS is not supported on the Cisco
Q. Is content filtering supported on the Cisco
A. Content filtering is presently not supported on the Cisco
Q. Is the Cisco Cloud Web Security (ScanSafe)
connector supported on the Cisco 4451-X?
A. Cloud Web Security (ScanSafe) is planned for a software
release on the Cisco 4451-X in a later release.
Q. Is the Cisco 4451-X Network Equipment Building
System (NEBS) certified?
Q. Does the Cisco 4451-X have certifications such as
Common Criteria and Evaluation Assurance Level 4 (EAL4)?
A. Common Criteria and EAL4 certification will be available
shortly after FCS.
Q. Is the Solid State Drive SSD or hard-drive
carrier card field upgradable or replaceable?
A. Yes, the carrier card is field replaceable, with some
restrictions in the first release where only the third NIM slot supports it. This restriction will, however, go away in a future release.
Q. In what form factors are the serial interface
NIMs available? What is the maximum serial density on the Cisco 4451-X?
A. The new NIM module type allows for a wide range of port
densities for T1/E1 interfaces including 1, 2, 4, and 8 ports. A smart serial NIM will be available in 1-, 2-, and 4-port versions shortly after initial release of the Cisco 4451-X.
Q. Is OIR possible on the hard disk drive
Q. Is there a service module adapter available which will
support hosting of any of the older network modules?
A. The older network modules are not supported on the Cisco
Q. What is the maximum number of SSD drives that can
be present in the NIM-SSD? Do they work in a redundant fashion?
A. There can be two drives as part of the NIM-SSD. They do
not work in a redundant fashion in the initial release.
Q. Is there a channelized solution on the Cisco
A. There is a channelized solution available on the T1/E1
interfaces. There is no channelized solution available on the T3/E3 module.
Cisco UCS E-Series Module
Q. Are the Cisco UCS E-Series modules supported on
the Cisco 4451-X?
A. Yes. The Cisco UCS E140S, UCS E140D, UCS E140DP, UCS
E160DP, and UCS E160DP modules are all supported on the Cisco 4451-X.
Q. Can we run Cisco virtual Wide Area Application
Services (vWAAS) for larger-scale WAAS deployments on the Cisco UCS E-Series?
A. Yes, vWAAS supports up to 6000 TCP connections on the
Cisco UCS E-Series. Additionally, standard VMware Virtual Machines can co-exist with vWAAS, allowing the Cisco UCS E-Series module to be used for branch-office server
Q. Are SSD drives supported on the Cisco 4451-X?
A. Yes, the SSD drives on both a NIM-SSD for onboard
services as well as the Cisco UCS E-Series module.
Q. Will WAAS performance be software
A. The Application Experience license, included with the AX
bundle, includes a license for up to 2500 TCP connections. This model can be supported with WAAS integrated into the Cisco 4451-X. For additional scale, a Cisco UCS E-Series module can be added
to run vWAAS. Integrated AppNav functions in the Cisco 4451-X allows the pooling of these WAAS resources to make the most efficient use of all.
Q. What technology license is required for
A. The Application Experience (AppX) technology package is
required for using the AVC feature set. The AVC solution encompasses Network-Based Application Recognition 2 (NBAR2), Flexible NetFlow, Media Monitoring, and Application Response Time
Q. What WAN optimization solutions are available on
the Cisco 4451-X?
A. ISR WAAS is available as an application that can run
within a virtual container on the Cisco 4451-X. One other option is to run the vWAAS on the Cisco UCS E-Series module.
Q. Is NIM-SSD necessary to run applications such as
ISR-WAAS on the Virtual Container?
A. Yes, NIM-SSD is required to run applications such as
Q. Is AppNav available on the Cisco
A. Yes AppNav is available on the Cisco
Q. Is the Web Cache Control Protocol (WCCP)
available on the Cisco 4451-X?
A. WCCP is available on the Cisco 4451-X, and we recommend
that you use AppNav for WAN optimization deployments.
Q. Is Cisco WAAS Express one of the WAN optimization
solution options on the Cisco 4451-X?
A. Cisco WAAS Express is not available on the Cisco 4451-X.
The integrated ISR-WAAS solution includes full WAAS functions without compromise.
Q. Is the support for Survivable Remote Site
Telephony (SRST) and Cisco United Border Element (UBE) functions on the Cisco 4451-X when it is launched?
A. Yes, support for SRST and Cisco UBE is part of the Cisco
4451-X when it is launched.
Q. Is Cisco Unified Communications Manager Express
(Unified CME) supported on the Cisco 4451-X?
A. Cisco Unified Communications Manager Express is not
supported on the Cisco 4451-X presently. This support may be available in a future release.
Q. For the case where we have digital signal
processor (DSP) conferencing will we have similar functions as the videoconferencing feature on the ISR G2 routers? How will it scale?
A. At this time there is no support for videoconferencing on
the Cisco Packet Voice Data Module 4 (PVDM4) DSPs correct.
Q. Where do I insert PVDMs on the Cisco
A. You can insert PVDMs on both the motherboard and
directly on some NIMs, depending on the use case. Cisco UBE requires that PVDMs be installed on the motherboard, whereas time-division multiplexing (TDM) deployments require them to be installed
directly on the NIM. Unlike the ISR G2 routers, the Cisco 4451-X does not have a TDM domain on its motherboard.
Q. How many PVDM slots are present on the
A. There is only one PVDM slot on the
Q. Can the TDM cards use the motherboard
Q. What version of Cisco Configuration Professional
supports the Cisco 4451-X?
A. Cisco Configuration Professional Version 2.7 supports the
Q. Is Cisco Security Manager supported on the Cisco
A. No. Cisco Security Manager support is not available for
the Cisco 4451-X.
Q. What version of the Cisco Prime enterprise and
service provider management application supports the Cisco 4451-X?
A. Cisco Prime 2.0 supports the Cisco 4451-X.
Q. Does the Cisco Configuration Engine support the
A. Support for the Cisco 4451-X is available on the Cisco
Qs from http://www.cisco.com/c/en/us/products/collateral/routers/4400-series-integrated-services-routers-isr/qa_c67-728261.html
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