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Catalyst switches usually form a stack on boot up, even if they are not stacked. They just form a stack with themselves. So Prime Infrastructure reads out the model of the switch, that says it is a stack. This leads to the fact, that the device model will be displayed as Cisco Catalyst 29xx Stack-able Ethernet Switch in Prime.

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There was a fix in IOS that told the switch to not report the stack, but the model via SNMP instead.

no snmp-server sysobjectid type stack-oid

This lead to a clean Prime Infrastructure database.

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Now this command is not working on IOS-XE and this leads to the same bad database issue we have had in the past:

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Does anybody know a fix for this in IOS-XE?

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  • "Catalyst switches usually form a stack on boot up, even if they are not stacked." What does that mean? I can install a bunch of stackable switches without actually creating a stack, and the switches do not form a stack, even if they are directly connected to each other.
    – Ron Maupin ♦
    Commented Oct 29, 2020 at 16:52
  • What XE version?
    – Ron Trunk
    Commented Oct 29, 2020 at 17:07
  • @RonTrunk: I am guessing it affects all XE versions, but i tested 16.6.4 & 16.09.06
    – Mario Jost
    Commented Oct 30, 2020 at 7:29
  • @RonMaupin: While booting up you can see this line in the log: %STACKMGR-4-SWITCH_ADDED: Switch 1 has been ADDED to the stack and if you issue show switch you can see that there is a stack with one member only.
    – Mario Jost
    Commented Oct 30, 2020 at 7:34
  • Right, a single stack switch is a stack with one member, but the switches do not form stacks with other stack switches, they are, themselves, stacks, and I would want that reported as such because if you add more switches to the stack, you would only see the stack as a single switch.
    – Ron Maupin ♦
    Commented Oct 30, 2020 at 11:22

2 Answers 2

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I can confirm command:

(no) snmp-server sysobjectid type stack-oid

is not implemented in IOS-XE 16.03.x / 16.06.x / 16.12.x - I assume all IOS-XE 16.x versions are affected. There is a Bug CSCvd39747 describing the issue with IOS-XE 16.3.2 - sadly no fixed versions are mentioned at all :o(

However the command was implemented and worked in legacy IOS-XE 3.x versions

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A bit late to the party but that is Cisco's TAC reply:

  • If you want to differentiate the stack members, there are several other ways to do it, like polling such as (entPhysicalDescr or entPhysicalModelName).
  • If you would like to know the exact model of Cat9200 switch then we would propose polling different OID, such as (entPhysicalDescr or entPhysicalModelName)

In previous cases with the same problem, I see that there are no plans to reintroduce this command.

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