Good afternoon, all!
We have seven branch offices running IP500's. Two of these are straight IP and the other five are hybrid digital units with IP400's. The network topology is a logical star, with the hub here in our main datacenter.
Two of the branch office IP500's have been falling off the planet for about a minute and a half, then coming back as if nothing was happening. There's a trunk alarm on the branch IP500, but not one on the datacenter unit. None of the branch routers or switches are showing any outages during these events, nor are there any errors on the underlying T1.
The phone gives the fast busy and "Unobtainable DISC" on the screen, but no other error at the phone. POTS lines on these units have not been affected by this.
During the events I can reach the Manager on the server, and I can initiate a reboot, which clears the problem until the next time. So the whole unit isn't freezing, but something is haywire.
Historically, one branch IP500 has been worse than the other, and the other branch has only recently (within the last month or so) had this problem. No other branch (so far) is having this issue.
We've checked and re-checked the configs, and don't find anything obviously wrong. Aside from the usual upgrades and user changes, there's been no changes in the config. In fact, the configs running on the remaining offices were used to build the one new config and the old offices are running fine.
I'm at my wit's end - we seem to have ruled out everything except aliens. Any thoughts?
Thanks very much for any help!
Greff
We have seven branch offices running IP500's. Two of these are straight IP and the other five are hybrid digital units with IP400's. The network topology is a logical star, with the hub here in our main datacenter.
Two of the branch office IP500's have been falling off the planet for about a minute and a half, then coming back as if nothing was happening. There's a trunk alarm on the branch IP500, but not one on the datacenter unit. None of the branch routers or switches are showing any outages during these events, nor are there any errors on the underlying T1.
The phone gives the fast busy and "Unobtainable DISC" on the screen, but no other error at the phone. POTS lines on these units have not been affected by this.
During the events I can reach the Manager on the server, and I can initiate a reboot, which clears the problem until the next time. So the whole unit isn't freezing, but something is haywire.
Historically, one branch IP500 has been worse than the other, and the other branch has only recently (within the last month or so) had this problem. No other branch (so far) is having this issue.
We've checked and re-checked the configs, and don't find anything obviously wrong. Aside from the usual upgrades and user changes, there's been no changes in the config. In fact, the configs running on the remaining offices were used to build the one new config and the old offices are running fine.
I'm at my wit's end - we seem to have ruled out everything except aliens. Any thoughts?
Thanks very much for any help!
Greff