Has anyone noticed weird behavior on the 3850s with the CISCO-STACKWISE-MIB? In particular, I'm trying to monitor for individual device down scenarios and find that, in some cases, when a stack member drops out, the MIB simply fails to report the stack member as existing rather than showing it as missing.
I believe this to be a bug, but before I go down that road, I want to confirm this isn't expected behavior for some reason I don't understand.
I can consistently reproduce this problem by reloading a single member.
When it is up I see the following in the CLI and SNMP respectively:
H/W Current
Switch# Role Mac Address Priority Version State
------------------------------------------------------------
*1 Active c4b9.cd4b.ac00 1 V02 Ready
2 Member c4b9.cd95.1280 1 V02 Ready
SNMPv2-SMI::enterprises.9.9.500.1.2.1.1.6.1000 = INTEGER: 4
SNMPv2-SMI::enterprises.9.9.500.1.2.1.1.6.2000 = INTEGER: 4
However, if I reboot switch 2, I would expect to see it in a state of 1,2,8,9, or 11 depending on where it is in the reboot cycle. Instead, it just disappears from SNMP as shown below:
H/W Current
Switch# Role Mac Address Priority Version State
------------------------------------------------------------
*1 Active c4b9.cd4b.ac00 1 V02 Ready
2 Member 0000.0000.0000 0 0 Removed
SNMPv2-SMI::enterprises.9.9.500.1.2.1.1.6.1000 = INTEGER: 4
I have previously been able to see devices in a 9 (provisioned) state in SNMP when the stack physically rebooted but one member failed to come up, so the behavior isn't 100% consistent across outage types.
All of my testing devices are WS-C3850-12X48U running 03.07.4E code
