[afnog] Backup routing Engine

[Mark Tinka]

On Wednesday, June 13, 2012 04:23:58 PM ibtisam jamal wrote:

> we dont have

Then that's fine.

Your upgrade procedure will be okay. Just be sure to run a 
backup (request system snapshot) of the current system prior 
to upgrading.

Also note that since Junos 9, you now require a minimum of 
1GB compact flash on the RE's. While I've installed Junos 
10.4 on a 256MB compact flash on an M7i (out of 
desperation), it's not something I'd generally recommend.

As you will be turning on GRES after you deploy the 2nd RE, 
you'll always need to disable it before any other Junos 
upgrades. Don't worry, if you forget, the system will remind 
you.

Also, one suggestion, after you install the 2nd RE, is to 
enable automatic synchronization of the committed 
configuration between both the primary and backup RE's.

	set system commit synchronize

If you don't include that command, you have to manually 
synchronize the configurations (commit synchronize), which 
is easy to forget, and a bad situation to be in if you're 
ever in a failover state.

Best of luck,

Mark.
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