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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