CTATX-MIB :: smirrorCongestionDroppedPkts

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCTATX-MIBsmirrorCongestionDroppedPkts

smirrorCongestionDroppedPkts

Module: CTATX-MIB

OID (symbolic): CTATX-MIB::smirrorCongestionDroppedPkts

OID (numeric): 1.3.6.1.4.1.97.3.30.12

Node type: OBJECT-TYPE

Type: Counter

Access: read-only

Description: Number of packets not mirrored due to exit port congestion.

What is smirrorCongestionDroppedPkts?

This counter tracks packets that were not mirrored because the exit port carrying the mirrored copies was congested. A rising count indicates the mirroring destination link can't keep up with the volume of traffic being copied to it. If a capture is missing bursts of traffic during peak load, an admin would check smirrorCongestionDroppedPkts to confirm the mirror port itself was the bottleneck.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.97.3.30.12
snmpwalk -v2c -c public <target> CTATX-MIB::smirrorCongestionDroppedPkts

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.97.3.30.12.1
snmpget -v2c -c public <target> CTATX-MIB::smirrorCongestionDroppedPkts.1

Start monitoring Cabletron/Enterasys ATX switch module with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CTATX-MIB::smirrorCongestionDroppedPkts OID value, configure state conditions and alerts, and monitor any Cabletron/Enterasys ATX switch module from a single console.

OID Breakdown

Upper-level ancestors (7 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
1.3.6.1.4.1.97sigmaCT-ELS10-27-MIB
Numeric OIDNameModule
1.3.6.1.4.1.97.3ecs_1CTATX-MIB
1.3.6.1.4.1.97.3.30smirrorCTATX-MIB
1.3.6.1.4.1.97.3.30.12smirrorCongestionDroppedPktsCTATX-MIB