JUNIPER-MIMSTP-MIB :: jnxMIMstCistPortRootProtectState

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsJUNIPER-MIMSTP-MIBjnxMIMstCistPortRootProtectState

jnxMIMstCistPortRootProtectState

Module: JUNIPER-MIMSTP-MIB

OID (symbolic): JUNIPER-MIMSTP-MIB::jnxMIMstCistPortRootProtectState

OID (numeric): 1.3.6.1.4.1.2636.3.46.1.1.8.1.2

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-only

Description: Indicates whether the port was prevented from being a root port for CIST. This parameter will always return 'no-error (0)' if jnxMIMstCistPortRootProtectEnabled is FALSE.

What is jnxMIMstCistPortRootProtectState?

Reports whether Root Protect actually kicked in on this port: no-error(0) or root-prevented(1), the latter meaning a superior BPDU was received but blocked from making this port the root; always returns no-error if jnxMIMstCistPortRootProtectEnabled is false. Seeing root-prevented here is an active signal that an unexpected device is trying to become the network's root bridge through this port.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2636.3.46.1.1.8.1.2
snmpwalk -v2c -c public <target> JUNIPER-MIMSTP-MIB::jnxMIMstCistPortRootProtectState

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.2636.3.46.1.1.8.1.2.1
snmpget -v2c -c public <target> JUNIPER-MIMSTP-MIB::jnxMIMstCistPortRootProtectState.1

Start monitoring Juniper EX-series Ethernet switch (MIMSTP, any generation) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the JUNIPER-MIMSTP-MIB::jnxMIMstCistPortRootProtectState OID value, configure state conditions and alerts, and monitor any Juniper EX-series Ethernet switch (MIMSTP, any generation) from a single console.

OID Breakdown

Upper-level ancestors (9 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
1.3.6.1.4.1.2636juniperMIBJUNIPER-SMI
1.3.6.1.4.1.2636.3jnxMibsJUNIPER-SMI
1.3.6.1.4.1.2636.3.46jnxXstpMibsJUNIPER-SMI
Numeric OIDNameModule
1.3.6.1.4.1.2636.3.46.1jnxMIMstMIBJUNIPER-MIMSTP-MIB
1.3.6.1.4.1.2636.3.46.1.1jnxMIDot1sJuniperMstJUNIPER-MIMSTP-MIB
1.3.6.1.4.1.2636.3.46.1.1.8jnxMIMstCistPortProtectTableJUNIPER-MIMSTP-MIB
1.3.6.1.4.1.2636.3.46.1.1.8.1jnxMIMstCistPortProtectEntryJUNIPER-MIMSTP-MIB
1.3.6.1.4.1.2636.3.46.1.1.8.1.2jnxMIMstCistPortRootProtectStateJUNIPER-MIMSTP-MIB