I'm trying to add a gauge for a Nortel 5510-24T using generic "Public" SNMP credentials. The credentials test ok, but on the discovery window it says "Discovering Interfaces/Ports... 24 of 40". Why is it trying to discover non-existent ports? The discovery never completes and unfortunately I don't have another 5510 around to compare with.
Any help appreciated.
Stagad - we usually get the "40" from IF-MIB:ifNumber (1.3.6.1.2.1.2.1). Is it possible the Nortel is giving us an incorrect value?
HTH,
Greg
Hi Greg,
Not sure. I'll contact Nortel support and ask them. I'll post the results.
stegad - Could you use the SNMP MIB Browser to query the MIB and verify that the device is giving us the value of 40?
Thanks,
Unless I'm reading it wrong, yes, the value is "40".
Is there anything I can do about this?
Could you please download the interface table and see if it reports information for 40 interfaces?
Sure thing, but could you tell me how to do this? I'm new to SNMP and not that familiar with the MIB browser. I know where the IF table is, but I'm not sure how to export it in a meaningful way.
stegad - Sure.
That will download the IF table. The items in the left most column will be your interface indexes.
--Greg
I exported the IF table to text. Attached.
Stegad - Looks to me like you have a bug to report to your vendor; the device is reporting it has 40 interfaces, but the ifTable only reports information about 24 of them.
I will try to make the Bandwidth Gauge not so dependent on the total number of interfaces in a future release to work around this.
Thanks for your help. So far, this is the only Nortel switch on which I've noticed this problem. I'll contact Nortel support. Perhaps this has already been addressed in a firmware patch.