i've a problem monitoring ISDM status with snmp protocol, on a cisco router.
With the IsdnLapdOperStatus OID i can detect if the isdn connection is actrive (layer2 active) or in standby (layer 1 acrive). When i remove the link (unstick the cable) the value of OID remain 2 (l1Active).
It appens on one router,. In another router, where i install a ISDN card but i never plug-in a isdn cable, the value of the prevoious OID is 1 (inactive), as i aspect.
I excuse for my hgorriblre english
Have you sam ideas? i must use another OID? I try to see the 1.3.6.1.4.9.9.26 (cisco-isdn) but router don't know this oid.
Thank you in advance
alex