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Asked: 2026-05-10T14:26:30+00:00

I’m querying a bunch of information from cisco switches using SNMP. For instance, I’m

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I’m querying a bunch of information from cisco switches using SNMP. For instance, I’m pulling information on neighbors detected using CDP by doing an snmpwalk on .1.3.6.1.4.1.9.9.23

Can I use this OID across different cisco models? What pitfalls should I be aware of? To me, I’m a little uneasy about using numeric OIDs – it seems like I should be using a MIB database or something and using the named OIDs, in order to gain cross-device compatibility, but perhaps I’m just imagining the need for that.

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  1. Once a MIB has been published it won’t move to a new OID. Doing so would break network management tools and cause support calls, which nobody wants. To continue your example, the CDP MIB has been published at Cisco’s SNMP Object Navigator.

    For general code cleanliness it would be good to define the OIDs in a central place, especially since you don’t want to duplicate the full OID for every single table you need to access.

    The place you need to be most careful is a unique MIB in a product which Cisco recently acquired. The OID will change, if nothing else to move it into their own Enterprise OID space, but the MIB may also change to conform to Cisco’s SNMP practices.

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