MPLS-MIB :: mplsPathInfoCOS

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsMPLS-MIBmplsPathInfoCOS

mplsPathInfoCOS

Module: MPLS-MIB

OID (symbolic): MPLS-MIB::mplsPathInfoCOS

OID (numeric): 1.3.6.1.4.1.2636.3.2.5.1.22

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-only

Description: The configured Class Of Service on this path. If the value is between 0 and 7 inclusive, this value will be inserted in the 3 bit COS field in the label. If the value is 255, the value in the COS field of the label will depend on other factors. This field is meaningless unless mplsPathInfoName is not empty

What is mplsPathInfoCOS?

This value reports the Class of Service configured on an LSP's active path: values 0-7 are inserted directly into the label's 3-bit COS field, while 255 means the COS field's value depends on other factors; meaningless if mplsPathInfoName is empty. Admins use it to verify a tunnel is tagging traffic with the expected priority marking.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2636.3.2.5.1.22
snmpwalk -v2c -c public <target> MPLS-MIB::mplsPathInfoCOS

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.2636.3.2.5.1.22.1
snmpget -v2c -c public <target> MPLS-MIB::mplsPathInfoCOS.1

Start monitoring Juniper Networks router (MPLS traffic engineering) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the MPLS-MIB::mplsPathInfoCOS OID value, configure state conditions and alerts, and monitor any Juniper Networks router (MPLS traffic engineering) from a single console.

OID Breakdown

Upper-level ancestors (8 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
Numeric OIDNameModule
1.3.6.1.4.1.2636.3.2mplsMPLS-MIB
1.3.6.1.4.1.2636.3.2.5mplsLspInfoListMPLS-MIB
1.3.6.1.4.1.2636.3.2.5.1mplsLspInfoEntryMPLS-MIB
1.3.6.1.4.1.2636.3.2.5.1.22mplsPathInfoCOSMPLS-MIB