IEEE8021-MSTP-MIB :: ieee8021MstpCistPortPseudoRootId

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsIEEE8021-MSTP-MIBieee8021MstpCistPortPseudoRootId

ieee8021MstpCistPortPseudoRootId

Module: IEEE8021-MSTP-MIB

OID (symbolic): IEEE8021-MSTP-MIB::ieee8021MstpCistPortPseudoRootId

OID (numeric): 1.3.111.2.802.1.1.6.1.3.1.21

Node type: OBJECT-TYPE

Type: BridgeId

Access: read-write

Description: In an MSTP Bridge, the pseudoRootId parameter value.

What is ieee8021MstpCistPortPseudoRootId?

The pseudoRootId value used by this port, an internal parameter that lets a bridge behave as if it were the root on this port for certain L2 gateway/tunneling scenarios rather than for the whole bridge.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.111.2.802.1.1.6.1.3.1.21
snmpwalk -v2c -c public <target> IEEE8021-MSTP-MIB::ieee8021MstpCistPortPseudoRootId

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.111.2.802.1.1.6.1.3.1.21.1
snmpget -v2c -c public <target> IEEE8021-MSTP-MIB::ieee8021MstpCistPortPseudoRootId.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.111.2.802.1.1.6.1.3.1.21.1 s <value>

Start monitoring Vendor-neutral IEEE 802.1s standard (enterprise/campus Ethernet bridge or switch, MSTP) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the IEEE8021-MSTP-MIB::ieee8021MstpCistPortPseudoRootId OID value, configure state conditions and alerts, and monitor any Vendor-neutral IEEE 802.1s standard (enterprise/campus Ethernet bridge or switch, MSTP) from a single console.

OID Breakdown

Upper-level ancestors (3 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.111.2.802.1.1ieee802dot1mibsIEEE8021-TC-MIB
Numeric OIDNameModule
1.3.111.2.802.1.1.6ieee8021MstpMibIEEE8021-MSTP-MIB
1.3.111.2.802.1.1.6.1ieee8021MstpObjectsIEEE8021-MSTP-MIB
1.3.111.2.802.1.1.6.1.3ieee8021MstpCistPortTableIEEE8021-MSTP-MIB
1.3.111.2.802.1.1.6.1.3.1ieee8021MstpCistPortEntryIEEE8021-MSTP-MIB
1.3.111.2.802.1.1.6.1.3.1.21ieee8021MstpCistPortPseudoRootIdIEEE8021-MSTP-MIB