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1. Determine whether the SRE module is the master or backup using one of these
methods:
•
Look at the MS (master) LED on the SRE module faceplate. If the MS LED is lit
steady green,the SRE moduleis the master.If it is blinking green, the SRE 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. IftheSREmodulethatyouwanttoremoveisthemaster,makeitthebackupmodule:
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 SRE 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 SRE 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 SRE module.
Taking an SRE Module Offline in a Switch With One SRE Module
To take the SRE module offline:
1. Connect to the console port on the SRE module.
2. From the console, halt the SRE 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 SRE module. The Routing Engine might take up to 5 minutes to gracefully
halt.
Related Topics Installing an SRE Module in an EX8208 Switch on page 155•
• Removing an SRE Module from an EX8208 Switch on page 215
• SRE Module LEDs in an EX8208 Switch on page 26
Copyright ©2010,Juniper Networks,Inc.214
CompleteHardwareGuide forEX8208 EthernetSwitches