ISIS-MIB :: isisSysLevelState

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsISIS-MIBisisSysLevelState

isisSysLevelState

Module: ISIS-MIB

OID (symbolic): ISIS-MIB::isisSysLevelState

OID (numeric): 1.3.6.1.2.1.138.1.2.1.1.4

Node type: OBJECT-TYPE

Type: IsisLevelState

Access: read-only

Description: The state of the database at this level. The value 'off' indicates that IS-IS is not active at this level. The value 'on' indicates that IS-IS is active at this level and is not overloaded. The value 'waiting' indicates a database that is low on an essential resource, such as memory. The administrator may force the state to 'overloaded' by setting the object isisSysLevelSetOverload. If the state is 'waiting' or 'overloaded', we originate LSPs with the overload bit set.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.138.1.2.1.1.4
snmpwalk -v2c -c public <target> ISIS-MIB::isisSysLevelState

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.138.1.2.1.1.4.1
snmpget -v2c -c public <target> ISIS-MIB::isisSysLevelState.1

Start monitoring Vendor-neutral IETF standard, RFC 4444 (router/Layer 3 switch running IS-IS) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ISIS-MIB::isisSysLevelState OID value, configure state conditions and alerts, and monitor any Vendor-neutral IETF standard, RFC 4444 (router/Layer 3 switch running IS-IS) from a single console.

OID Breakdown

Upper-level ancestors (6 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAXON-MIB
1.3.6.1.2.1mib_2AXON-MIB
Numeric OIDNameModule
1.3.6.1.2.1.138isisMIBISIS-MIB
1.3.6.1.2.1.138.1isisObjectsISIS-MIB
1.3.6.1.2.1.138.1.2isisSysLevelISIS-MIB
1.3.6.1.2.1.138.1.2.1isisSysLevelTableISIS-MIB
1.3.6.1.2.1.138.1.2.1.1isisSysLevelEntryISIS-MIB
1.3.6.1.2.1.138.1.2.1.1.4isisSysLevelStateISIS-MIB