All MIBs › FOUNDRY-SN-SWITCH-GROUP-MIB › snVLanByPortStpRootCost
snVLanByPortStpRootCost
Module: FOUNDRY-SN-SWITCH-GROUP-MIB
OID (symbolic): FOUNDRY-SN-SWITCH-GROUP-MIB::snVLanByPortStpRootCost
OID (numeric): 1.3.6.1.4.1.1991.1.1.3.2.1.1.21
Node type: OBJECT-TYPE
Type: Integer32
Access: read-only
Description: dot1dStpRootCost: From RFC1493(Bridge MIB). The cost of the path to the root as seen from this bridge.
What is snVLanByPortStpRootCost?
This object represents the spanning tree path cost from the current switch bridge to the root bridge on a specific VLAN, as seen from this bridge's perspective. In spanning tree protocol (STP), each bridge calculates the total cost of paths to the root to prevent loops and determine optimal frame forwarding. A network operator would monitor this to verify correct spanning tree topology and path selection in VLANs.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1991.1.1.3.2.1.1.21 snmpwalk -v2c -c public <target> FOUNDRY-SN-SWITCH-GROUP-MIB::snVLanByPortStpRootCost
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.1991.1.1.3.2.1.1.21.1 snmpget -v2c -c public <target> FOUNDRY-SN-SWITCH-GROUP-MIB::snVLanByPortStpRootCost.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::snVLanByPortStpRootCost 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 |
| 1.3.6.1.4.1.1991.1.1.3.2.1 | snVLanByPortTable | FOUNDRY-SN-SWITCH-GROUP-MIB |
| 1.3.6.1.4.1.1991.1.1.3.2.1.1 | snVLanByPortEntry | FOUNDRY-SN-SWITCH-GROUP-MIB |
| 1.3.6.1.4.1.1991.1.1.3.2.1.1.21 | snVLanByPortStpRootCost | FOUNDRY-SN-SWITCH-GROUP-MIB |