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topologyChange
Module: MRVINREACH
OID (symbolic): MRVINREACH::topologyChange
OID (numeric): 1.3.6.1.2.1.17.0.2
Node type: NOTIFICATION-TYPE
Description:
A topologyChange trap is sent by a bridge when any of its configured ports transitions from the Learning state to the Forwarding state, or from the Forwarding state to the Blocking state. The trap is not sent if a newRoot trap is sent for the same transition. Implementation of this trap is optional.
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> '' MRVINREACH::topologyChange snmptrap -v2c -c public <manager> '' 1.3.6.1.2.1.17.0.2
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]:55638->[192.168.30.10]:162]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (249196886) 28 days, 20:12:48.86 SNMPv2-MIB::snmpTrapOID.0 = OID: MRVINREACH::topologyChange