Taking The Host Subsystem Offline In An Ex9200 Switch - Juniper EX9214 Hardware Manual

Installing an RE Module in an EX9200 Switch | 227
Upgrading an EX9200-SF to an EX9200-SF2 | 229
Upgrading to an EX9200-SF3 | 233
Removing an SF Module from an EX9200 Switch | 236
Installing an SF Module in an EX9200 Switch | 238
Maintaining the Host Subsystem in EX9200 Switches | 242

Taking the Host Subsystem Offline in an EX9200 Switch

Before removing a Routing Engine module (RE module) from an EX9200 switch, take the host subsystem
offline.
The host subsystem performs switching and system management functions in an EX9200 switch.
To take a host subsystem offline:
1. Determine whether the host subsystem is the primary or backup using one of these methods:
• Look at the MASTER LED on the RE module faceplate. If the MASTER LED is lit steady green, the
corresponding host subsystem is functioning as the primary.
• Issue the show chassis routing-engine CLI command. The output of this command will show whether
the host subsystem is functioning as the primary or backup.
2. If the host subsystem is functioning as the primary, switch it to backup using the request chassis
routing-engine master switch command.
3. On the console or other management device connected to the primary Routing Engine, enter CLI
operational mode and issue the request system halt command. The command shuts down the Routing
Engine gracefully, so its state information is preserved.
Wait until a message appears on the console confirming that the operating system has halted.
NOTE: The Switch Fabric module (SF module) might continue forwarding traffic for
approximately 5 minutes after the request system halt command has been issued.
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