CISCO-CLASS-BASED-QOS-MIB :: cbQosREDTailDropByte

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-CLASS-BASED-QOS-MIBcbQosREDTailDropByte

cbQosREDTailDropByte

Module: CISCO-CLASS-BASED-QOS-MIB

OID (symbolic): CISCO-CLASS-BASED-QOS-MIB::cbQosREDTailDropByte

OID (numeric): 1.3.6.1.4.1.9.9.166.1.20.1.1.11

Node type: OBJECT-TYPE

Type: Counter32

Access: read-only

Description: The lower 32 bits count of bytes dropped when the number of packets in the associated queue was greater than the maximum threshold.

What is cbQosREDTailDropByte?

Reports the lower 32 bits of a counter of bytes tail-dropped by WRED because the queue depth exceeded the maximum threshold.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.166.1.20.1.1.11
snmpwalk -v2c -c public <target> CISCO-CLASS-BASED-QOS-MIB::cbQosREDTailDropByte

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.166.1.20.1.1.11.1
snmpget -v2c -c public <target> CISCO-CLASS-BASED-QOS-MIB::cbQosREDTailDropByte.1

SNMPv3 example:

snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> cbQosREDTailDropByte.1

Start monitoring Cisco routers and switches (class-based QoS) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCO-CLASS-BASED-QOS-MIB::cbQosREDTailDropByte OID value, configure state conditions and alerts, and monitor any Cisco routers and switches (class-based QoS) 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
1.3.6.1.4.1.9ciscoCAT2600-MIB
1.3.6.1.4.1.9.9ciscoMgmtCISCO-SMI
Numeric OIDNameModule
1.3.6.1.4.1.9.9.166ciscoCBQosMIBCISCO-CLASS-BASED-QOS-MIB
1.3.6.1.4.1.9.9.166.1ciscoCBQosMIBObjectsCISCO-CLASS-BASED-QOS-MIB
1.3.6.1.4.1.9.9.166.1.20cbQosREDClassStatsCISCO-CLASS-BASED-QOS-MIB
1.3.6.1.4.1.9.9.166.1.20.1cbQosREDClassStatsTableCISCO-CLASS-BASED-QOS-MIB
1.3.6.1.4.1.9.9.166.1.20.1.1cbQosREDClassStatsEntryCISCO-CLASS-BASED-QOS-MIB
1.3.6.1.4.1.9.9.166.1.20.1.1.11cbQosREDTailDropByteCISCO-CLASS-BASED-QOS-MIB