Table Of Contents
Connecting Cisco Network Capacity Expansion Enhanced Network Modules to the Network
Revised: May 1, 2008, OL-16672-01
This guide describes how to connect Cisco Network Capacity Expansion enhanced network modules to your network. It contains the following sections:
Cisco Network Capacity Expansion Enhanced Network Modules
The NME-TPO network module provides WAN bandwidth optimization for the integrated services router (ISR) product family through more efficient packet compression algorithm and Transmission Control Protocol (TCP) optimization.
The NME-TPO network module ships from the factory with the following hardware preinstalled.
Note In addition to the NME-TPO network module, there are two Cisco Network Capacity Expansion advanced integration modules (AIM). For information about installing the AIM-TPO-1 or AIM-TPO-2 modules, see the hardware installation guide for your router.
The Cisco Network Capacity Expansion enhanced network module LEDs are shown in Figure 1.
Figure 1 NME-TPO Faceplate
Establishing a Gigabit Ethernet Internal Logical Connection
Use the Cisco High-Speed Intrachassis Module Interconnect (HIMI) feature to establish a Gigabit Ethernet internal logical connection between two network modules, or between an onboard small-form-factor pluggable (SFP) Gigabit Ethernet module and a network module on a Cisco 3825 router or Cisco 3845 router.
Connections can be established only as follows:
•Between the Gigabit Ethernet port in an installed onboard SFP module on a Cisco 3825 router or Cisco 3845 router
•Between Gigabit Ethernet interfaces in network module slots 1 and 2 on a Cisco 3825 router
•Between Gigabit Ethernet interfaces in network module slots 2 and 4 on a Cisco 3845 router
Note A module interconnection between the Gigabit Ethernet port on an SFP module on a Cisco 3825 router or a Cisco 3845 router and a network module slot or a network module-to-network module cross-connection is permitted at any given time. However, both types of connections cannot be implemented at the same time.
For details about configuring HIMI connections, see the Cisco High-Speed Intrachassis Module Interconnect (HIMI) Configuration Guide on Cisco.com:
Online Insertion and Removal of Cisco Network Modules
Some Cisco routers allow you to replace network modules without switching off the router or affecting the operation of other interfaces. This feature is called online insertion and removal (OIR). OIR of a module provides uninterrupted operation to network users, maintains routing information, and ensures session preservation.
Caution Unlike other network modules, Cisco Network Capacity Expansion enhanced network modules use USB storage. Online removal of network modules without proper shutdown can cause file system corruption and might render the USB storage unusable. You must shut down the operating system on the network module in an orderly way before removing or powering down the network module.
Caution Cisco routers support OIR with identical modules only. If you remove a module, install in its place another module exactly like the one you removed. If you remove a 2-slot module (along with any installed WAN or voice interface cards), install another module and card combination exactly like the one you removed.
For descriptions of informational and error messages that may appear on the console during this procedure, see the hardware installation guide for your router.
To perform online removal of a network module and insertion of a replacement, follow these steps, with the router in privileged EXEC mode:
Step 1 Initiate a network module session by using the following command:
Router# service-module transport-Opt-Service-Engine slot/unit session
Trying 10.10.10.1, 2065 ... OpenSE-Module> enableSE-Module#
Step 2 Save the running configuration of the network module by using the following command from the
SE-Module#prompt:SE-Module# copy running-config tftp tftp-server-address filename
Step 3 Exit the network module session by pressing Control-Shift-6, followed by pressing x.
Step 4 Shut down the network module interface:Router (config)# interface transport-Opt-Service-Engine slot/unitRouter (config-if)# shutdownRouter (config-if)# exit
Step 5 On the router, clear the transport-Opt-Service-Engine console session by using the following command:
Router# service-module transport-Opt-Service-Engine slot/unit session clear
Step 6 Perform a graceful shutdown of the network module disk drive by using the following command:Router# service-module transport-Opt-Service-Engine slot/unit shutdown
Step 7 Check the status of the network module:Router# service-module transport-Opt-Service-Engine slot/unit statusService Module is Cisco Transport-Opt-Service-Engine4/0Service Module supports session via TTY line 258Service Module is ShutdownService Module is in fail openService Module status is not available
Step 8 Loosen the two captive screws that are holding the network module in the chassis slot.
Step 9 Slide the network module out of the slot.
Step 10 Align the replacement network module with the guides in the chassis slot, and slide it gently into the slot.
Note If the router is not fully configured with network modules, make sure that blank panels fill the unoccupied chassis slots to provide proper airflow.
Step 11 Push the module into place until you feel its edge connector mate securely with the connector on the backplane.
Step 12 Check that the network module LEDs are on. This inspection ensures that connections are secure and that the new unit is operational.
Step 13 Initiate a network module session by using the following command:Router# service-module transport-Opt-Service-Engine slot/unit sessionTrying 10.10.10.1, 2129 ... OpenSE-Module> enableSE-Module#
Step 14 Restore the running configuration of the network module by using the following command from the service module prompt:SE-Module# copy tftp running-config tftp-server-address filename
Step 15 Exit the network module session by pressing Control-Shift-6, followed by pressing x.
Step 16 The network module interface is still in shutdown mode. Return the network module interface to active state by using the following command:Router (config)# interface transport-Opt-Service-Engine slot/unitRouter (config-if)# no shutdownRouter (config-if)# exit
For additional information, see the following documents and resources.
Related Topic Document Title
Cisco Network Capacity Expansion application configuration
Cisco Network Capacity Expansion feature guide
Regulatory compliance and safety information
Cisco Network Modules and Interface Cards Regulatory Compliance and Safety Information
Cisco IOS software website and reference documentation
Cisco IOS Software http://www.cisco.com/web/psa/products/index.html?c=268438303
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