Having a small problem - wondering if anyone has any suggestions. What I want to do is change out my ARC without disconnecting users. The main purpose is to upgrade the code on my live ARC; however, once it's upgraded, I thought I might leave both ARC's in the chassis just for the sake of having more blinking lights (Sorry, I just like blinkin' lights). Here's how my chassis is config'd:

NMC SETTINGS
Chassis Awareness:        ENABLED
Dynamic Slot Assignment: DISABLED
DSA Idle Rebalancing:     ENABLED
SNMP Forwarding:          ENABLED

My plan is to get a new ARC in slot 16 and get the one in slot 15 out, or at least offline so that it can be upgraded. Here's what I tried to do (that didn't work):

On the new card, using a backup/offline chassis, I configured it as "slot 1-16 owner no", and disabled nmc chassis awareness. Also disabled chassis awareness on the "live" ARC in the online chassis. I thought I could put the new ARC in slot 16, then "soft busy out" the DSP in slot 3. Once there were no more open sessions on Slot 3, then I would give the old ARC a "set chassis slot 3 owner no" and the new ARC "set chassis slot 3 owner yes". Then, in a perfect world, restoring the DSP in slot 3 and busying-out slot 1, new connections would go to slot 3 and the new ARC. Then doing the same again once there were no new connections on the slot 1 DSP.

Didn't happen - when I do this, after changing the ownership on the ARC's, the slot 3 DSP won't take calls. I'm sure it's because the new ARC in slot 16 doesn't recognize the DSP in slot 3. A "List chassis" shows all the slots as "--EMPTY--".

Is there a better way to do this, or do I have to specifically tell the ARC in slot 16 what type of cards are in the DSP slots? Ideas? Recommendations?