Taking the RE Module Offline in an EX8216 Switch

Before removing a Routing Engine (RE) module from an EX8216 switch, take the module offline.

The RE module performs switching and system management functions in an EX8216 switch. Your switch can have either one or two RE modules.

Taking an RE Module Offline in a Switch with Redundant RE Modules

To take an RE module offline:

1. Determine whether the RE module is the master or backup using one of these methods:
   • Look at the MS (master) LED on the RE module faceplate. If the MS LED is lit steady green, the RE module is the master. If it is blinking green, the RE module is the backup.
   • Issue the following CLI command:
     
     
     

     user@switch> show chassis routing-engine
Routing Engine status:
Slot 0: Current state Master
Election priority Master (default) ...
2. If the RE module that you want to remove is the master, make it the backup module:
   
   
   

   user@switch> request chassis routing-engine master switch
3. From the master, halt the other Routing Engine:
   
   
   

   user@switch> request system halt other-routing-engine
4. Wait a minute or two for the Routing Engine to halt before proceeding. If you are using a console connection, you will see a message when the system is halted. If the Routing Engine has not yet halted, the following step returns an error.
5. Take the backup RE module offline:
   
   
   

   user@switch> request chassis cb offline slot slot-number
   
   

   where slot-number is either 0 (slot SRE0) or 1 (slot SRE1).

6. (Optional) Confirm that the RE module is offline:
   
   
   

   user@switch> show chassis environment cb

If the state field in the command output shows that the module is offline, then it is safe to remove the RE module.

Taking an RE Module Offline in a Switch With One RE Module

To take the RE module offline:

1. Connect to the console port on the RE module.
2. From the console, halt the RE module:
   
   
   

   user@switch> request system halt
   
   

   The RE module is gracefully halted but not powered off.

When a message appears confirming that the operating system has halted, it is safe to remove the RE module. The Routing Engine might take up to 5 minutes to gracefully halt.