[cisco-nas] ISDN PRI monitoring via SNMP

[Oliver Boehmer (oboehmer)]

> Does anyone know the MIB string to poll to get the
> layer 2 status and Layer 3 status on ISDN PRI?
> 
> Looking to poll to see if Layer 2 is active and Layer
> 3 is multi frame established.

Check out ISDN-MIB (RFC 2127,
ftp://ftp.cisco.com/pub/mibs/v2/ISDN-MIB.my), OID
isdnLapdOperStatus (.1.3.6.1.2.1.10.20.1.3.4.1.2):

isdnLapdOperStatus OBJECT-TYPE
        SYNTAX      INTEGER {
            inactive(1),
            l1Active(2),
            l2Active(3)
        }

for TEI_ASSIGNED, we return l1Active(2), for MULTIPLE_FRAME_ESTABLISHED
l2Active(3).

	oli