Thanks Brian! I'll check this out in the lab in the morning.
Sent from my iPhone On 2014-02-19, at 4:57 PM, "Brian Meade (brmeade)" <[email protected]> wrote: > Lelio, > > So the phones will still get an ITL file in a “Prepare Cluster for Rollback” > scenario but it should be a blank ITL allowing the phones to trust > everything. If you open the trust list on the phone, you should see there > are no TFTP servers defined in that scenario. > > That explains the first thing you saw. > > For the 2nd issue, it sounds like your offline cluster possibly was still > serving out the blank ITL. Restarting TFTP service may help there. You’d > need to check the trust list on the phones and actually see what the phones > got in that scenario. > > Thanks, > Brian > > From: cisco-voip [mailto:[email protected]] On Behalf Of > Lelio Fulgenzi > Sent: Wednesday, February 19, 2014 4:38 PM > To: cisco-voip voyp list > Subject: [cisco-voip] unexpected behaviour with "Prepare Cluster for > Rollback" and migrating phones between v9 and v7 cluster > > > OK, now I am officially confused. ;) > > 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. > > Here's what I did: > upgraded offline cluster (all servers had same hostname and IP address) > set the "Prepare Cluster for Rollback" parameter to True and clicked Save > (because there were no phones registered, I did not "Apply Changes") > plugged phones into the offline network > phones registered to the new offline v9 cluster > checked phone security pages - they showed ITL files listed (that long string > of numbers) > thinking it was the "Apply Changes" that missed something, I clicked that > phones restarted, but still showed an ITL file > brought a phone back to the live network, phone registered to the v7 cluster > (still has an ITL file listed) > on offline cluster, change the "Prepare Cluster for Rollback" to False, > clicked Save, clicked Apply Changes (phones restarted, and showed an ITL file) > 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. > So what I see are a few things confusing me: > 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. > Why does a phone that registers to a v7 cluster still have it's ITL file set? > 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? > 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? > > Is something wrong with my logic and steps? I was testing with a 7942 and a > 7962. > > Lelio > > --- > Lelio Fulgenzi, B.A. > Senior Analyst, Network Infrastructure > Computing and Communications Services (CCS) > University of Guelph > > 519‐824‐4120 Ext 56354 > [email protected] > www.uoguelph.ca/ccs > Room 037, Animal Science and Nutrition Building > Guelph, Ontario, N1G 2W1 >
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