DIFFSERV-MIB :: diffServClfrNextFree

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsDIFFSERV-MIBdiffServClfrNextFree

diffServClfrNextFree

Module: DIFFSERV-MIB

OID (symbolic): DIFFSERV-MIB::diffServClfrNextFree

OID (numeric): 1.3.6.1.2.1.97.1.2.1

Node type: OBJECT-TYPE

Type: IndexIntegerNextFree

Access: read-only

Description: This object contains an unused value for diffServClfrId, or a zero to indicate that none exist.

What is diffServClfrNextFree?

Returns an unused classifier ID (diffServClfrId) that a management station should use when creating a new classifier row, or zero if none are free. An admin's provisioning script reads this first, then uses the returned value in the SET that creates the new diffServClfrEntry.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.97.1.2.1
snmpwalk -v2c -c public <target> DIFFSERV-MIB::diffServClfrNextFree

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.97.1.2.1.1
snmpget -v2c -c public <target> DIFFSERV-MIB::diffServClfrNextFree.1

Start monitoring Router/Layer 3 switch implementing DiffServ QoS (vendor-neutral, RFC 3289) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DIFFSERV-MIB::diffServClfrNextFree OID value, configure state conditions and alerts, and monitor any Router/Layer 3 switch implementing DiffServ QoS (vendor-neutral, RFC 3289) 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
1.3.6.1.2.1.97diffServMibDIFFSERV-MIB
1.3.6.1.2.1.97.1diffServMIBObjectsDIFFSERV-MIB
1.3.6.1.2.1.97.1.2diffServClassifierDIFFSERV-MIB
1.3.6.1.2.1.97.1.2.1diffServClfrNextFreeDIFFSERV-MIB