Cisco 3825 Hardware Installation Guide - Page 341

Chapter 32 Connecting Cisco Wireless LAN Controller Enhanced Network Modules Shutting Down the WLAN Controller Shutting Down the WLAN Controller Insert a narrow pin into the shutdown opening on the faceplate, and press the button for less than 2 seconds to perform a graceful shutdown of the hard disk 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 2 seconds, an immediate shutdown of the hard disk will occur and may cause file corruption on the network module's hard disk. After an immediate shutdown, the HD and SYS LEDs remain lighted. Press the shutdown button for less than 2 seconds to gracefully reboot the network module. Establishing a Gigabit Ethernet Internal Connection The Cisco WLAN controller-enhanced network module lets you establish an internal Gigabit Ethernet connection between an onboard small-form-factor pluggable (SFP) Gigabit Ethernet module and a WLAN controller-enhanced network module installed in Cisco 3700 series routers, Cisco 2800 Integrated Services Routers (ISR), or Cisco 3800 ISRs. Note The Cisco 2801 Integrated Services Router does not support the Cisco WLAN controller network module. Internal connections must be established as follows: • Cisco 2811 router-Install the WLAN controller network module in slot 1 • Cisco 2821 router-Install the WLAN controller network module in slot 1 • Cisco 2851 router-Install the WLAN controller network module in slot 1 • Cisco 3725 router-Install the WLAN controller network module in slot 1 • Cisco 3745 router-Install the WLAN controller network module in any of slots 1 through 4 • Cisco 3825 router-Install the WLAN controller network module in slots 1 and 2 • Cisco 3845 router-Install the WLAN controller network module in any of slots 1 through 4 Online Insertion and Removal of Cisco Network Modules Some Cisco access 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 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. OL-2485-20 Cisco Network Modules Hardware Installation Guide 32-3