DC-ISIS-MIB :: isisSysID

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › DC-ISIS-MIB › isisSysID

isisSysID

Module: DC-ISIS-MIB

OID (symbolic): DC-ISIS-MIB::isisSysID

OID (numeric): 1.2.826.0.1.1578918.5.63.1.1.1.1.1.4

Node type: OBJECT-TYPE

Type: SystemID

Access: read-create

Description: The ID for this instance of the Integrated IS-IS protocol. This value is appended to each of the area addresses to form the Network Entity Titles. The derivation of a value for this object is implementation-specific. Some implementations may automatically assign values and not permit an SNMP write, while others may require the value to be set manually.

For the DC-ISIS implementation, this field is set through the MIB. This object follows the replaceOnlyWhileDisabled behavior.

What is isisSysID?

Holds the System ID for this IS-IS instance, the identifier appended to each configured area address to build the router's Network Entity Titles (NETs); in the DC-ISIS implementation this value is always set explicitly through the MIB rather than auto-derived. An admin assigns a unique System ID per router (commonly derived from a loopback address) when bringing up IS-IS, and can only change it while the instance is administratively disabled.

OID Breakdown

Upper-level ancestors (6 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.2member_bodyIEEE802dot11-MIB
1.2.826gbMETASWITCH-MIB
1.2.826.0gbNationalMETASWITCH-MIB
1.2.826.0.1gbNatCompanyMETASWITCH-MIB
1.2.826.0.1.1578918dataConnectionMETASWITCH-MIB
Numeric OIDNameModule
1.2.826.0.1.1578918.5.63.1dcIsisMibDC-ISIS-MIB
1.2.826.0.1.1578918.5.63.1.1isisObjectsDC-ISIS-MIB
1.2.826.0.1.1578918.5.63.1.1.1isisSystemDC-ISIS-MIB
1.2.826.0.1.1578918.5.63.1.1.1.1isisSysTableDC-ISIS-MIB
1.2.826.0.1.1578918.5.63.1.1.1.1.1isisSysEntryDC-ISIS-MIB
1.2.826.0.1.1578918.5.63.1.1.1.1.1.4isisSysIDDC-ISIS-MIB