CISCOSB-BRIDGEMIBOBJECTS-MIB :: rldot1sMstpInstancePortDesignatedRoot

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCOSB-BRIDGEMIBOBJECTS-MIBrldot1sMstpInstancePortDesignatedRoot

rldot1sMstpInstancePortDesignatedRoot

Module: CISCOSB-BRIDGEMIBOBJECTS-MIB

OID (symbolic): CISCOSB-BRIDGEMIBOBJECTS-MIB::rldot1sMstpInstancePortDesignatedRoot

OID (numeric): 1.3.6.1.4.1.9.6.1.101.57.6.2.1.7

Node type: OBJECT-TYPE

Type: BridgeId

Access: read-only

Description: The unique Bridge Identifier of the Bridge recorded as the Root in the Configuration BPDUs transmitted by the Designated Bridge for the segment to which the port is attached.

What is rldot1sMstpInstancePortDesignatedRoot?

This holds the Bridge Identifier of the root bridge as seen on a particular network segment. It identifies which bridge the Spanning Tree protocol considers authoritative for loop prevention on that link. An operator uses this to diagnose Spanning Tree topology issues and confirm the network's loop-prevention path.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.57.6.2.1.7
snmpwalk -v2c -c public <target> CISCOSB-BRIDGEMIBOBJECTS-MIB::rldot1sMstpInstancePortDesignatedRoot

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.57.6.2.1.7.1
snmpget -v2c -c public <target> CISCOSB-BRIDGEMIBOBJECTS-MIB::rldot1sMstpInstancePortDesignatedRoot.1

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OID Breakdown

Upper-level ancestors (10 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.9ciscoCAT2600-MIB
1.3.6.1.4.1.9.6otherEnterprisesCISCO-SMI
1.3.6.1.4.1.9.6.1ciscoSBCISCO-SMI
1.3.6.1.4.1.9.6.1.101switch001CISCOSB-MIB
Numeric OIDNameModule
1.3.6.1.4.1.9.6.1.101.57rlpBridgeMIBObjectsCISCOSB-BRIDGEMIBOBJECTS-MIB
1.3.6.1.4.1.9.6.1.101.57.6rldot1sMstpCISCOSB-BRIDGEMIBOBJECTS-MIB
1.3.6.1.4.1.9.6.1.101.57.6.2rldot1sMstpInstancePortTableCISCOSB-BRIDGEMIBOBJECTS-MIB
1.3.6.1.4.1.9.6.1.101.57.6.2.1rldot1sMstpInstancePortEntryCISCOSB-BRIDGEMIBOBJECTS-MIB
1.3.6.1.4.1.9.6.1.101.57.6.2.1.7rldot1sMstpInstancePortDesignatedRootCISCOSB-BRIDGEMIBOBJECTS-MIB