All MIBs › JUNIPER-MIMSTP-MIB › jnxMIMstCistPortLoopProtectStateChangeTrap
jnxMIMstCistPortLoopProtectStateChangeTrap
Module: JUNIPER-MIMSTP-MIB
OID (symbolic): JUNIPER-MIMSTP-MIB::jnxMIMstCistPortLoopProtectStateChangeTrap
OID (numeric): 1.3.6.1.4.1.2636.3.46.1.3.0.10
Node type: NOTIFICATION-TYPE
Description: Generated when the ports Loop-protect state (no-error or loop-prevented) for CIST changes.
What is jnxMIMstCistPortLoopProtectStateChangeTrap?
This notification event is generated when a port's loop protection state changes between error-free and loop-prevented status for the Common and Internal Spanning Tree (CIST). Network operators subscribe to this trap to be alerted when spanning tree loop detection mechanisms activate or deactivate. Loop protection is critical for preventing traffic loops in redundant network topologies.
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> '' JUNIPER-MIMSTP-MIB::jnxMIMstCistPortLoopProtectStateChangeTrap snmptrap -v2c -c public <manager> '' 1.3.6.1.4.1.2636.3.46.1.3.0.10
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]:54754->[192.168.30.10]:162]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (437937122) 50 days, 16:29:31.22 SNMPv2-MIB::snmpTrapOID.0 = OID: JUNIPER-MIMSTP-MIB::jnxMIMstCistPortLoopProtectStateChangeTrap
Start monitoring Juniper EX-series Ethernet switch (MIMSTP, any generation) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the JUNIPER-MIMSTP-MIB::jnxMIMstCistPortLoopProtectStateChangeTrap OID value, configure state conditions and alerts, and monitor any Juniper EX-series Ethernet switch (MIMSTP, any generation) from a single console.
OID Breakdown
Upper-level ancestors (9 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.2636 | juniperMIB | JUNIPER-SMI |
| 1.3.6.1.4.1.2636.3 | jnxMibs | JUNIPER-SMI |
| 1.3.6.1.4.1.2636.3.46 | jnxXstpMibs | JUNIPER-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2636.3.46.1 | jnxMIMstMIB | JUNIPER-MIMSTP-MIB |
| 1.3.6.1.4.1.2636.3.46.1.3 | jnxMIDot1sJuniperMstTraps | JUNIPER-MIMSTP-MIB |
| 1.3.6.1.4.1.2636.3.46.1.3.0 | jnxMIMstTraps | JUNIPER-MIMSTP-MIB |
| 1.3.6.1.4.1.2636.3.46.1.3.0.10 | jnxMIMstCistPortLoopProtectStateChangeTrap | JUNIPER-MIMSTP-MIB |