Interface Number and MIB Names

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Updated:November 1, 2005

Document ID:7907

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How can you identify what interface number to use in the MIB name?

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Q. How can you identify what interface number to use in the MIB name?

A. Each row of the interfaces table has an associated number, called an ifIndex. You use the ifIndex number to get a specific instance of an interfaces group object. For example, ifInNUcastPkts.1 would find you the number of broadcast packets received on interface number one. You can then find the description of interface number one by looking at the object which holds the interface description (from MIB-II) ifDescr.1.