Monitoring ISDN E1 PRI Operational (L2) state with SNMP

Unanswered Question
Nov 2nd, 2010


I'm trying to find SNMP OID (and MIB in which OID contain) to monitor L2 of ISDN PRI line.

I've configured Nagios check for interface, but even serial 0/x/0:15 is up/up, that doesn't mean its working on L2.

What I need is to distinguish between states: L1/L2 DOWN, L1 ACTIVE and L2 DOWN or L2 TEI_ASSIGNED or L2 MULTIPLE_FRAME_ESTABLISHED - working line on L2.

Can you please point me to right way or OID/MIB?

I've found several discussions but any of them doesn't solving similar issue.

Thank you in advance,


I have this problem too.
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