Cisco 3825 Hardware Installation Guide - Page 388

Online Insertion and Removal of Cisco Network Modules Procedure Chapter 36 Connecting WAAS Enhanced Network Modules 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, WAAS enhanced network modules use hard disks. Online removal of disks without proper shutdown can result in file system corruption and might render the disk unusable. The operating system on the network module must be shut down in an orderly way before removing or powering down the module. Caution Cisco routers support OIR with similar modules only. If you remove a module, install another module exactly like it in its place. 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 a description 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 Step 2 Step 3 Step 4 Step 5 Step 6 Initiate a network module session using the following command: Router# service-module integrated-service-engine slot/unit session Trying 10.10.10.1, 2065 ... Open Press RETURN to get started! Router> enable Router# Save the running configuration of the network module using the following command from the Router # prompt: Router# copy running-config tftp tftp-server-address filename Exit the network module session by pressing Control-Shift-6, followed by x. On the router, clear the integrated-service-engine console session using the following command: Router# service-module integrated-service-engine slot/unit session clear Perform a graceful shutdown of the network module disk drive by using the following command: Router# service-module integrated-service-engine slot/unit shutdown Shut down the network module interface: Router (config)# interface integrated-service-engine slot/unit Router (config-if)# shutdown Router (config-if)# exit 36-6 Cisco Network Modules Hardware Installation Guide OL-2485-20