ISIS-MIB :: isisAdjacencyChange

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsISIS-MIBisisAdjacencyChange

isisAdjacencyChange

Module: ISIS-MIB

OID (symbolic): ISIS-MIB::isisAdjacencyChange

OID (numeric): 1.3.6.1.2.1.138.0.17

Node type: NOTIFICATION-TYPE

Description: A notification sent when an adjacency changes state, entering or leaving state up. The first 6 bytes of the isisPduLspId are the SystemID of the adjacent IS. The isisAdjState is the new state of the adjacency.

Examples

Send this trap to an SNMP manager — replace <manager> with the IP or hostname of your monitoring server (SNMPv2c):

snmptrap -v2c -c public <manager> '' ISIS-MIB::isisAdjacencyChange
snmptrap -v2c -c public <manager> '' 1.3.6.1.2.1.138.0.17

Listen for incoming traps on the manager host (-f keeps it in the foreground, -Lo prints to stdout — useful for testing):

snmptrapd -f -Lo -c /dev/null authCommunity log public

Example snmptrapd log entry:

zoo11-linux.zoo [UDP: [192.168.30.111]:54568->[192.168.30.10]:162]:
  DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (479868200) 55 days, 12:58:02.00
  SNMPv2-MIB::snmpTrapOID.0 = OID: ISIS-MIB::isisAdjacencyChange

SNMPv3 example:

snmptrap -v3 -l authPriv -u snmpv3user -a SHA -A "AuthPass1" -x AES -X "PrivPass1" <manager> '' ISIS-MIB::isisAdjacencyChange

Start monitoring Vendor-neutral IETF standard, RFC 4444 (router/Layer 3 switch running IS-IS) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ISIS-MIB::isisAdjacencyChange OID value, configure state conditions and alerts, and monitor any Vendor-neutral IETF standard, RFC 4444 (router/Layer 3 switch running IS-IS) from a single console.

OID Breakdown

Upper-level ancestors (6 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAXON-MIB
1.3.6.1.2.1mib_2AXON-MIB
Numeric OIDNameModule
1.3.6.1.2.1.138isisMIBISIS-MIB
1.3.6.1.2.1.138.0isisNotificationsISIS-MIB
1.3.6.1.2.1.138.0.17isisAdjacencyChangeISIS-MIB