All MIBs › CISCOSB-BRIDGEMIBOBJECTS-MIB › rldot1sMstpInstanceDesignatedRoot
rldot1sMstpInstanceDesignatedRoot
Module: CISCOSB-BRIDGEMIBOBJECTS-MIB
OID (symbolic): CISCOSB-BRIDGEMIBOBJECTS-MIB::rldot1sMstpInstanceDesignatedRoot
OID (numeric): 1.3.6.1.4.1.9.6.1.101.57.6.1.1.5
Node type: OBJECT-TYPE
Type: BridgeId
Access: read-only
Description: The bridge identifier of the root of the spanning tree as determined by the Muliple Spanning Tree Protocol as executed by this node. This value is used as the Root Identifier parameter in all Configuration Bridge PDUs originated by this node.
What is rldot1sMstpInstanceDesignatedRoot?
This read-only BridgeId reports the identifier of the bridge that this node has determined to be the root of the spanning tree for a given MSTP instance, the value this node also advertises in its own Configuration BPDUs. An admin checks it to confirm which switch is acting as root for that instance and to catch unexpected root changes. For example, after a maintenance window an admin would read this object to verify the intended core switch is still the designated root rather than an edge switch that took over.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.57.6.1.1.5 snmpwalk -v2c -c public <target> CISCOSB-BRIDGEMIBOBJECTS-MIB::rldot1sMstpInstanceDesignatedRoot
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.57.6.1.1.5.1 snmpget -v2c -c public <target> CISCOSB-BRIDGEMIBOBJECTS-MIB::rldot1sMstpInstanceDesignatedRoot.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> rldot1sMstpInstanceDesignatedRoot.1
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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 |
| 1.3.6.1.4.1.9 | cisco | CAT2600-MIB |
| 1.3.6.1.4.1.9.6 | otherEnterprises | CISCO-SMI |
| 1.3.6.1.4.1.9.6.1 | ciscoSB | CISCO-SMI |
| 1.3.6.1.4.1.9.6.1.101 | switch001 | CISCOSB-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.6.1.101.57 | rlpBridgeMIBObjects | CISCOSB-BRIDGEMIBOBJECTS-MIB |
| 1.3.6.1.4.1.9.6.1.101.57.6 | rldot1sMstp | CISCOSB-BRIDGEMIBOBJECTS-MIB |
| 1.3.6.1.4.1.9.6.1.101.57.6.1 | rldot1sMstpInstanceTable | CISCOSB-BRIDGEMIBOBJECTS-MIB |
| 1.3.6.1.4.1.9.6.1.101.57.6.1.1 | rldot1sMstpInstanceEntry | CISCOSB-BRIDGEMIBOBJECTS-MIB |
| 1.3.6.1.4.1.9.6.1.101.57.6.1.1.5 | rldot1sMstpInstanceDesignatedRoot | CISCOSB-BRIDGEMIBOBJECTS-MIB |