Can you please elaborate, why such a formula does not work for Logical interfaces?
Thanks and rgds, Murthy
Jochen Friedrich wrote:
> Let us consider an equipment having the entities, rack, shelves, slots,
> cards, ports. Let us assume, maximum number of SNMP interfaces (ex; ATM
> interface, ADSL line interface, ADSL channel interface) supported per
> slot is X. Then, we can device a formula to find out ifIndex of an
> Interface uniquely as follows;
> ifIndex=<rack #> <shelf #> <slot #> <interface # within the slot. 0 to
> With this formula, one get same ifIndex all the time for a particular
That might work for physical interfaces but will definitely fail for
logical ones (like loopback, tunnel, ELAN, trunk interfaces etc).
-- Murthy.N.N Local: 7-7927 (NC0. Column Q2-12) ESN: 6-357-7927 External: 1-919-997-7927 (Office) 1-919-484-1878 (x 7543) (Res)