IEEE8021-MSTP-MIB :: ieee8021MstpCistRegionalRootIdentifier

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsIEEE8021-MSTP-MIBieee8021MstpCistRegionalRootIdentifier

ieee8021MstpCistRegionalRootIdentifier

Module: IEEE8021-MSTP-MIB

OID (symbolic): IEEE8021-MSTP-MIB::ieee8021MstpCistRegionalRootIdentifier

OID (numeric): 1.3.111.2.802.1.1.6.1.1.1.4

Node type: OBJECT-TYPE

Type: BridgeId

Access: read-only

Description: In an MSTP Bridge, the CIST Regional Root Identifier parameter, i.e., the Bridge Identifier of the current CIST Regional Root.

What is ieee8021MstpCistRegionalRootIdentifier?

The Bridge Identifier of the current CIST Regional Root — the bridge acting as root for this whole MSTP region — letting you confirm which switch this bridge currently considers the top of its region's spanning tree.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.111.2.802.1.1.6.1.1.1.4
snmpwalk -v2c -c public <target> IEEE8021-MSTP-MIB::ieee8021MstpCistRegionalRootIdentifier

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.111.2.802.1.1.6.1.1.1.4.1
snmpget -v2c -c public <target> IEEE8021-MSTP-MIB::ieee8021MstpCistRegionalRootIdentifier.1

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::ieee8021MstpCistRegionalRootIdentifier 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
1.3.111.2.802.1.1.6.1.1ieee8021MstpCistTableIEEE8021-MSTP-MIB
1.3.111.2.802.1.1.6.1.1.1ieee8021MstpCistEntryIEEE8021-MSTP-MIB
1.3.111.2.802.1.1.6.1.1.1.4ieee8021MstpCistRegionalRootIdentifierIEEE8021-MSTP-MIB