[c-nsp] SNMP descrepancy

[Vincent C Jones]

> But Phil is correct about polling the wrong OID: TS is looking at
> BRIDGE-MIB::dot1dTpFdbAddress, not ipNetToMedia.
> 

In which case the explanation is simple: By default on a Cisco box, the
bridge forwarding database (sho mac addr) timeout is 5 minutes (sho mac
addr aging), while the ARP table (ipNetToMedia) hangs around for four
hours. Devices down more than 5 minutes but less than four hours will
only appear in the ARP table.
-- 
Vincent C. Jones
Networking Unlimited, Inc.
Phone: +1 201 568-7810
V.Jones at NetworkingUnlimited.com