Thus spake Aaron Nabil
As far as IP pool assignment...the best way to get this to work with the above setup is to set each Arc with two ip pools and
set: disable ip address_pool_round_robin
Then set the first arc with pool 1 first, pool 2 second, and the second arc with pool 2 first and pool 1 second.
Unless you set these as no_aggregate, both ARC's will announce routes for both pools. And even if you do set them no_aggregate, replacing the failed ARC will cause it start using addresses the other backup ARC had been assigning (assuming it used up all of it's first pool).
Replacing the failed Arc is problematic, yeah...but there are ways to work around that...ie, have a pool of addresses available total for this situation (could use this one pool for all of your network, not just the chassis)...then set this as the new pool on the new chassis that you're using to replace the failed one. As the dsa idle rebalancing moves cards back over to the new chassis, this will free up the second pool on the first Arc, which can then be added back to the replacement arc. At this point, you can also then add the primary pool on the other arc back (again...make sure you have the round robin pool assignment disabled), then delete the temporary pool from the replaced arc (note, you can do this will addresses from that pool are still in use...the arcs are intelligent about this) and it'll switch back to your original situation.
In any case, this doesn't sound like such a good idea.
The only obvious solution is to assign 2x the number of addresses to each ARC, or use some kind of radius-based IP address resource allocation.
Ugh...I can't handle double the number of addresses...I think my solution above should work (assuming your network uses at least RIP routing for your IP pools), and drastically lowers the IP address consumption....maybe not *quite* as easy to manage a switch over, but should be transparent to end users and not as wasteful of IP addresses. -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.