PRVT-ISIS-MIB :: prvtIsisCircLvl2IDOctet

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › PRVT-ISIS-MIB › prvtIsisCircLvl2IDOctet

prvtIsisCircLvl2IDOctet

Module: PRVT-ISIS-MIB

OID (symbolic): PRVT-ISIS-MIB::prvtIsisCircLvl2IDOctet

OID (numeric): 1.3.6.1.4.1.738.1.6.4.4.1.3.2.1.53

Node type: OBJECT-TYPE

Type: Integer32

Access: read-only

Description: A one byte identifier for the circuit selected by the Intermediate System.

On point-to-point circuits, the value is used as the Local Circuit ID in point-to-point IIH PDUs transmitted on this circuit. In this case, values of prvtIsisCircLvl2IDOctet do not need to be unique.

For broadcast circuits, the value is used to generate the LAN ID that will be used if this Intermediate System is elected as the Designated IS on this circuit. The value is required to differ on LANs where the Intermediate System is the Designated Intermediate System.

What is prvtIsisCircLvl2IDOctet?

This is a single byte identifying this circuit at level 2: on point-to-point links it becomes the Local Circuit ID and doesn't need to be unique, while on broadcast links it feeds into the LAN ID used if this router wins the level-2 DIS election, where it must differ across LANs where this router is DIS.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.738.1.6.4.4.1.3.2.1.53
snmpwalk -v2c -c public <target> PRVT-ISIS-MIB::prvtIsisCircLvl2IDOctet

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.738.1.6.4.4.1.3.2.1.53.1
snmpget -v2c -c public <target> PRVT-ISIS-MIB::prvtIsisCircLvl2IDOctet.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
1.3.6.1.4.1.738privateVendorOIDPRIV-VENDORDEF-MIB
1.3.6.1.4.1.738.1prvt_productsPRVT-SWITCH-MIB
1.3.6.1.4.1.738.1.6ipSwitchPRVT-SWITCH-MIB
1.3.6.1.4.1.738.1.6.4routingProtocolsPRVT-OSPF-EXTENSION-MIB
Numeric OIDNameModule
1.3.6.1.4.1.738.1.6.4.4prvtIsisMIBPRVT-ISIS-MIB
1.3.6.1.4.1.738.1.6.4.4.1prvtIsisMIBObjectsPRVT-ISIS-MIB
1.3.6.1.4.1.738.1.6.4.4.1.3prvtIsisCircPRVT-ISIS-MIB
1.3.6.1.4.1.738.1.6.4.4.1.3.2prvtIsisCircTablePRVT-ISIS-MIB
1.3.6.1.4.1.738.1.6.4.4.1.3.2.1prvtIsisCircEntryPRVT-ISIS-MIB
1.3.6.1.4.1.738.1.6.4.4.1.3.2.1.53prvtIsisCircLvl2IDOctetPRVT-ISIS-MIB