All MIBs › JUNIPER-MIMSTP-MIB › jnxMIMstMstiTopChanges
jnxMIMstMstiTopChanges
Module: JUNIPER-MIMSTP-MIB
OID (symbolic): JUNIPER-MIMSTP-MIB::jnxMIMstMstiTopChanges
OID (numeric): 1.3.6.1.4.1.2636.3.46.1.1.4.1.7
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: The number of times that there have been atleast one non-zero TcWhile Timer on this Bridge for this spanning tree instance.
What is jnxMIMstMstiTopChanges?
This counter tracks the number of times the Multiple Spanning Tree Instance (MSTI) topology has changed on a Juniper bridge, as detected by active Topology Change (TC) timers. Each topology change indicates a bridge or link failure/recovery event affecting the spanning tree. Network engineers monitor this counter to detect frequent network instability or configuration issues in multi-instance spanning tree deployments.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2636.3.46.1.1.4.1.7 snmpwalk -v2c -c public <target> JUNIPER-MIMSTP-MIB::jnxMIMstMstiTopChanges
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2636.3.46.1.1.4.1.7.1 snmpget -v2c -c public <target> JUNIPER-MIMSTP-MIB::jnxMIMstMstiTopChanges.1
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::jnxMIMstMstiTopChanges 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 |
| 1.3.6.1.4.1.2636.3.46.1.1 | jnxMIDot1sJuniperMst | JUNIPER-MIMSTP-MIB |
| 1.3.6.1.4.1.2636.3.46.1.1.4 | jnxMIMstMstiBridgeTable | JUNIPER-MIMSTP-MIB |
| 1.3.6.1.4.1.2636.3.46.1.1.4.1 | jnxMIMstMstiBridgeEntry | JUNIPER-MIMSTP-MIB |
| 1.3.6.1.4.1.2636.3.46.1.1.4.1.7 | jnxMIMstMstiTopChanges | JUNIPER-MIMSTP-MIB |