All MIBs › FOUNDRY-SN-SWITCH-GROUP-MIB › snVLanByPortCfgStpTopChanges
snVLanByPortCfgStpTopChanges
Module: FOUNDRY-SN-SWITCH-GROUP-MIB
OID (symbolic): FOUNDRY-SN-SWITCH-GROUP-MIB::snVLanByPortCfgStpTopChanges
OID (numeric): 1.3.6.1.4.1.1991.1.1.3.2.7.1.16
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: The total number of topology changes detected by this bridge since the management entity was last reset or initialized.
What is snVLanByPortCfgStpTopChanges?
This counter tallies the total number of Spanning Tree Protocol topology changes detected on a particular VLAN since the device was last reset or rebooted. A topology change indicates that bridges or links in the VLAN have been added or removed. Network operators monitor this to detect frequent STP flaps, which can signal unstable connectivity or misconfigured redundancy.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1991.1.1.3.2.7.1.16 snmpwalk -v2c -c public <target> FOUNDRY-SN-SWITCH-GROUP-MIB::snVLanByPortCfgStpTopChanges
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.1991.1.1.3.2.7.1.16.1 snmpget -v2c -c public <target> FOUNDRY-SN-SWITCH-GROUP-MIB::snVLanByPortCfgStpTopChanges.1
Start monitoring Brocade/Foundry FastIron/BigIron Ethernet switch (VLAN/FDB/STP) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the FOUNDRY-SN-SWITCH-GROUP-MIB::snVLanByPortCfgStpTopChanges OID value, configure state conditions and alerts, and monitor any Brocade/Foundry FastIron/BigIron Ethernet switch (VLAN/FDB/STP) from a single console.
OID Breakdown
Upper-level ancestors (10 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 |
| 1.3.6.1.4.1.1991 | foundry | FOUNDRY-SN-ROOT-MIB |
| 1.3.6.1.4.1.1991.1 | products | FOUNDRY-SN-ROOT-MIB |
| 1.3.6.1.4.1.1991.1.1 | switch | FOUNDRY-SN-ROOT-MIB |
| 1.3.6.1.4.1.1991.1.1.3 | snSwitch | FOUNDRY-SN-ROOT-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.1991.1.1.3.2 | snVLanInfo | FOUNDRY-SN-SWITCH-GROUP-MIB |
| 1.3.6.1.4.1.1991.1.1.3.2.7 | snVLanByPortCfgTable | FOUNDRY-SN-SWITCH-GROUP-MIB |
| 1.3.6.1.4.1.1991.1.1.3.2.7.1 | snVLanByPortCfgEntry | FOUNDRY-SN-SWITCH-GROUP-MIB |
| 1.3.6.1.4.1.1991.1.1.3.2.7.1.16 | snVLanByPortCfgStpTopChanges | FOUNDRY-SN-SWITCH-GROUP-MIB |