Online Insertion And Removal On A Ws-4500X-32 - Cisco Catalyst 4500 Series Configuration Manual

Online Insertion and Removal on a WS-4500X-32

You do not need to enter a command to notify the software that you are going to remove or install a
module. The system notifies the supervisor engine that a module has been removed or installed and scans
the system for a configuration change. The newly installed module is initialized, and each interface type
is verified against the system configuration; then the system runs diagnostics on the new interface. There
is no disruption to normal operation during module insertion or removal.
If you remove a module and then replace it, or insert a different module of the same type into the same
slot, no change to the system configuration is needed. An interface of a type that has been configured
previously is brought online immediately. If you remove a module and insert a module of a different
type, the interface(s) on that module is administratively up with the default configuration for that
module.
Online Insertion and Removal on a WS-4500X-32
You must initiate an uplink module removal procedure on a WS-4500X-32 (the Catalyst 4500-X Series
Switch) either through a CLI (below) or through the OIR button on the front panel of the uplink.
Note Unscheduled uplink module removal is not supported because the C4KX-NM-8 module has hardware
communication lines to the baseboard that cannot be unplugged in an online state. Communication must
be stopped first.
Before removing the uplink module, you must press the OIR button for 5 seconds, and wait for the OIR
LED to turn Green. Removing a module without pressing the OIR button causes the system to reboot to
ROMMON with the following console error message:
Kernal panic - not syncing: Removing a module from switch causes instability.
Rebooting in 15 seconds...
No special steps are needed for insertion.
Note
With Cisco Release IOS XE 3.3.0SG and IOS 15.1(1)SG, two CLI's are introduced: hw-module module
number start and hw-module module number stop. For the number keyword, the only applicable value
for WS-C4500 is 2. With Cisco Release IOS XE 3.3.0SG and IOS 15.1(1)SG, the start and stop
commands are only enabled on the uplink module of WS-4500X-32.
For details, please refer to the hardware portion of the documentation library:
http://www.cisco.com/en/US/products/hw/switches/ps4324/prod_installation_guides_list.html
Shutting down a Module
To shut down a module safely, either enter the hw-module module stop command or press the OIR
button for 5 seconds.
Note The hw-module module stop command is enabled only on the uplink modules of the WS-C4500X-32.
The following example shows what happens if a module is up and you enter the hw-module module
stop command:
Switch# hw-module module 2 stop
Proceed with module stop? [confirm]
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
7-32
Chapter 7 Configuring Interfaces
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