All MIBs › AT-GS950-8-MIB › dot1sOldDesignatedRoot
dot1sOldDesignatedRoot
Module: AT-GS950-8-MIB
OID (symbolic): AT-GS950-8-MIB::dot1sOldDesignatedRoot
OID (numeric): 1.3.6.1.4.1.207.1.4.165.118.1.4.1.12
Node type: OBJECT-TYPE
Type: BridgeId
Access: read-only
Description: The bridge identifier of the old root of the spanning tree instance as determined by the Spanning Tree Protocol as executed by this node.
What is dot1sOldDesignatedRoot?
Reports the bridge identifier of the previous root bridge for a spanning tree instance before the most recent root bridge change. This is useful for auditing topology transitions and diagnosing why a root bridge election occurred.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.207.1.4.165.118.1.4.1.12 snmpwalk -v2c -c public <target> AT-GS950-8-MIB::dot1sOldDesignatedRoot
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.207.1.4.165.118.1.4.1.12.1 snmpget -v2c -c public <target> AT-GS950-8-MIB::dot1sOldDesignatedRoot.1
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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 |
| 1.3.6.1.4.1.207 | alliedTelesyn | AT-RG600-MIB |
| 1.3.6.1.4.1.207.1 | products | AT-SMI-MIB |
| 1.3.6.1.4.1.207.1.4 | swhub | AtiEdgeSwitch-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.207.1.4.165 | at_GS9508v2 | AT-GS950-8-MIB |
| 1.3.6.1.4.1.207.1.4.165.118 | l2Mst | AT-GS950-8-MIB |
| 1.3.6.1.4.1.207.1.4.165.118.1 | dot1sMst | AT-GS950-8-MIB |
| 1.3.6.1.4.1.207.1.4.165.118.1.4 | dot1sMstiBridgeTable | AT-GS950-8-MIB |
| 1.3.6.1.4.1.207.1.4.165.118.1.4.1 | dot1sMstiBridgeEntry | AT-GS950-8-MIB |
| 1.3.6.1.4.1.207.1.4.165.118.1.4.1.12 | dot1sOldDesignatedRoot | AT-GS950-8-MIB |