CISCOSB-BRIDGEMIBOBJECTS-MIB :: rldot1sMstpInstancePortPathCost

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCOSB-BRIDGEMIBOBJECTS-MIBrldot1sMstpInstancePortPathCost

rldot1sMstpInstancePortPathCost

Module: CISCOSB-BRIDGEMIBOBJECTS-MIB

OID (symbolic): CISCOSB-BRIDGEMIBOBJECTS-MIB::rldot1sMstpInstancePortPathCost

OID (numeric): 1.3.6.1.4.1.9.6.1.101.57.6.2.1.6

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-only

Description: The contribution of this port to the path cost of paths towards the spanning tree root which include this port. 802.1D-1990 recommends that the default value of this parameter be in inverse proportion to the speed of the attached LAN.

What is rldot1sMstpInstancePortPathCost?

This read-only integer is this port's contribution to the path cost toward the MSTP instance's spanning tree root, with 802.1D-1990 recommending a default set in inverse proportion to the port's link speed. An admin reviews it to understand or verify why a particular port was chosen (or not chosen) as a root or designated port. For example, an admin comparing a 1 Gbps uplink's cost against a 100 Mbps backup link's cost would expect to see a much lower value here for the faster link.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.57.6.2.1.6
snmpwalk -v2c -c public <target> CISCOSB-BRIDGEMIBOBJECTS-MIB::rldot1sMstpInstancePortPathCost

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.57.6.2.1.6.1
snmpget -v2c -c public <target> CISCOSB-BRIDGEMIBOBJECTS-MIB::rldot1sMstpInstancePortPathCost.1

SNMPv3 example:

snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> rldot1sMstpInstancePortPathCost.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
1.3.6.1.4.1.9.6.1.101.57.6.2.1.6rldot1sMstpInstancePortPathCostCISCOSB-BRIDGEMIBOBJECTS-MIB