Calling All Mitel 3300 controller experts

[skinnypuppy56]

Please read below,we are currently engaged with Mitel/3rd party vendor but looking to the tek-tips community for further assistance/ideas.

I the customer am currently experiencing issues with resiliency and fail-over in the Mitel controller world. The basics are we were sold on (2) controllers <1 @ HQ - 1 @ Colo> with MPLS at all hub-spoke locations.

Our main issue occurs when a spoke <IP ENDPOINTS> loses T1 but controller remains active no network loss at all the ip endpoints immediately want to look for resilient server? Mitel states that phone should do 2 consecutive keep alives that technically really should never happen but take us out of business while resiliency is taking place in background.

Failover procedure
T1 @ spoke <ip endpoints> goes down
10mb ethernet at hub <controller>up the entire time
firewall will sense and make a vpn ipsec connection back to carrier very quickly
in this time period the phones go into resiliency as i mentioned and our phones are down DID will not ring location or ext-ext calling.

3300 controller
release level 4.1 sp2
active software 10.1.2.20
platform MXe 512MB ram

 

[Supernova99]

Correct me if I am wrong.

Your scenario is:-
you have remote phones via T1 links
You lose the T1
The phones, as they are setup for resilient working start to look for the resilient controller.
The T1 link comes back to life but the phone is now attached to the resilient controller.
When phone is resilient you are unable to DID or internal dialling.

If the above is correct have you tried turning off resiliency and see if they stay up.

There is a heartbeat timer in the controller registry that you could adjust

You say that DID is not working or internal is not working have you checked the nescessary programming on the resilient controller. to me it would seem the cluster is not configured correctly (remote directory and IP/XNET programming)

Share what you know - Learn what you don't

 

[kwbMitel]

I cannot reconsile your description of the problem with the symptoms.

You say the network is up all the time but the phones go resilient when the T1 is down. I want to assume like Supernova does that the T1 is part of the network but then how can you say the network is up if a portion is down?

Where are the phones with respect to the primary controller? Do they have network connectivity to the primary all the time?

Assuming not, what portion of the network is failing? (T1?)

Where do the DID's terminate? (primary or secondary or both)

Better info = better answers.



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