<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: verdana,helvetica,sans-serif; font-size: 10pt; color: #000000'><br>OK, now I am officially confused. ;)<br><br>I was under the impression that once a phone has registered to a v9 cluster, it downloads an ITL trust list/file which prevents it from registering to a v7 cluster. To help with this, the "Prepare Cluster for Rollback" enterprise parameter was introduced.<br><br>Here's what I did:<br><ul><li>upgraded offline cluster (all servers had same hostname and IP address)<br></li><li>set the "Prepare Cluster for Rollback" parameter to True and clicked Save (because there were no phones registered, I did not "Apply Changes")</li><li>plugged phones into the offline network</li><li>phones registered to the new offline v9 cluster<br></li><li>checked phone security pages - they showed ITL files listed (that long string of numbers)</li><li>thinking it was the "Apply Changes" that missed something, I clicked that</li><li>phones restarted, but still showed an ITL file</li><li>brought a phone back to the live network, phone registered to the v7 cluster (still has an ITL file listed)</li><li>on offline cluster, change the "Prepare Cluster for Rollback" to False, clicked Save, clicked Apply Changes (phones restarted, and showed an ITL file)</li><li>I picked up one of the phones from the offline network (now in rollback=false mode) and brought it to the live network. It registered to the v7 cluster.</li></ul><p>So what I see are a few things confusing me:</p><ul><li>Why do phones still have ITL files if the cluster is in rollback mode. This is not a big deal, but I'd like to be able to tell from the phone when it's registered with the "Prepare Cluster for Rollback" set to TRUE.</li><li>Why does a phone that registers to a v7 cluster still have it's ITL file set?</li><li>Why (and this is the one that gets me) does a phone that was on v9 with "Prepare Cluster for Rollback" set to FALSE successfully register to the v7 cluster?</li></ul><p>Is the ITL trust list a simple hash of the IP addresses and host names of the cluster members? If I don't change anything, things will continue to work?</p><p><br></p><p>Is something wrong with my logic and steps? I was testing with a 7942 and a 7962.<br></p><p><br></p><p>Lelio</p><p><br></p><div><span name="x"></span>---<br>Lelio Fulgenzi, B.A.<br>Senior Analyst, Network Infrastructure<br>Computing and Communications Services (CCS)<br>University of Guelph<br><br>519‐824‐4120 Ext 56354<br>lelio@uoguelph.ca<br>www.uoguelph.ca/ccs<br>Room 037, Animal Science and Nutrition Building<br>Guelph, Ontario, N1G 2W1<span name="x"></span><br></div><br></div></body></html>