Cisco 3825 Hardware Installation Guide - Page 393

Chapter 37 Connecting Cisco Unified Messaging Gateway Enhanced Network Modules Online Insertion and Removal of Cisco Network Modules Procedure Shutting Down Cisco Unified Messaging Gateway Enhanced Network Modules Press the SHUTDOWN button on the network module faceplate for less than 2 seconds to perform a graceful shutdown of the network module before removing power from the router or before starting an online insertion and removal (OIR) sequence on the router. The application may take up to 2 minutes to fully shut down. Caution If you press the SHUTDOWN button for more than 4 seconds, a nongraceful shutdown of the hard disk will occur and may corrupt files on the network module's hard disk. After a nongraceful shutdown, the HD and SYS LEDs remain lit. Press the SHUTDOWN button for less than 2 seconds to gracefully reboot the network module. Online Insertion and Removal of Cisco Network Modules Procedure 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 Unified Messaging Gateway enhanced network modules use hard disks. Online removal of network modules without proper shutdown can cause file system corruption and might render the disk unusable. You must shut down the operating system on the network module in an orderly way before removing or powering down the 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 it. 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 integrated-Service-Engine slot/unit session Trying 10.10.10.1, 2065 ... Open SE-Module> enable SE-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: Address or name or remote host? tftp-server-address OL-2485-20 Cisco Network Modules Hardware Installation Guide 37-3