MBG and 3300 resiliency

[Mattmayn]

Is there a way to have a TW phone failover to another ICP? I am trying to build a system that has redundant MBGs (that part works) and 3300s. The phone will use both MBGs with no problems and it will use both 3300s if the phone is internal. However, it will not fail over to its secondary ICP while in TW mode.

Is this possible? If so, what am I missing to make it work?

Running MCD 5 and MBG 7.1.

[dilkie]

if you've set up 3300 resiliency/clustering correctly, then it should just work.

but make sure you have the ip trunking networking forms on the 3300 set up so they know each other's ip addresses, otherwise they cannot tell the set (and MBG) where to go in case of a failure.

for a set on the lan, they can "cheat" a little bit even if the 3300's are not set up correctly. They can also get resiliency addresses from DHCP and even if the 3300 isn't programmed correctly, they can find the secondary.

A way to test if this kind of misconfiguration is in place, use the '7' key to program a LAN set as a "teleworker", but point it directly at the primary 3300. Then it will not use the DHCP resiliency info. Perform a primary 3300 failure and see if it fails over to the secondary. If it doesn't, then look to the 3300 cluster programming (sorry I can't help you much there).

(you can use the '7' again to remove the teleworker programming on the set afterwards).

there's also a way to see in tug.log if the 3300 is sending the correct 'redirect' information.

[Mattmayn]

Sorry, I should have tested before posting this. Someone else in my office was trying this and said it didn't work. It does.