I need to get information via SNMP about the master interface from which the other interface inherits its IP address.
So if I configure this on a Cisco router
interface loopback0 ip address 10.0.0.1 255.255.255.0 interface Serial0 ip unnumbered loopback0
I need to get the ifindex or name of the master interface for Serial0 like in this show command:
P2>sh int s0 Serial0 is up, line protocol is up Interface is unnumbered. Using address of Loopback0 (10.0.0.1)
I already searched several public and cisco MIBs and also did a grep over all RFCs for the word unnumbered near SNMP without any luck yet ...
With kind regards, Marcus Kommnick at systeme dot de