CISCO-NAT-CGN-EXT-MIB :: cNatCgnCounterPortUsageHighThreshold

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › CISCO-NAT-CGN-EXT-MIB › cNatCgnCounterPortUsageHighThreshold

cNatCgnCounterPortUsageHighThreshold

Module: CISCO-NAT-CGN-EXT-MIB

OID (symbolic): CISCO-NAT-CGN-EXT-MIB::cNatCgnCounterPortUsageHighThreshold

OID (numeric): 1.3.6.1.4.1.9.9.818.1.2.1.1.15

Node type: OBJECT-TYPE

Type: Integer32

Access: read-write

Description: This object specifies the high threshold in percentage of available public ports that are used up. The notification cNatCgnNotifPortUsageWatermarkHigh is sent once the value of cNatCgnCounterAveragePortAllocation becomes higher than or equal to this value. If this field is set to zero, the notification is not generated.

What is cNatCgnCounterPortUsageHighThreshold?

A configurable high-watermark percentage of used public ports; when average port allocation reaches or exceeds this value, the device fires a port-usage-high notification to warn that NAT port exhaustion may be approaching.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.818.1.2.1.1.15
snmpwalk -v2c -c public <target> CISCO-NAT-CGN-EXT-MIB::cNatCgnCounterPortUsageHighThreshold

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.818.1.2.1.1.15.1
snmpget -v2c -c public <target> CISCO-NAT-CGN-EXT-MIB::cNatCgnCounterPortUsageHighThreshold.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.9.9.818.1.2.1.1.15.1 i <value>

Start monitoring Cisco service-provider router (Carrier-Grade NAT/CGN) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCO-NAT-CGN-EXT-MIB::cNatCgnCounterPortUsageHighThreshold OID value, configure state conditions and alerts, and monitor any Cisco service-provider router (Carrier-Grade NAT/CGN) 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
1.3.6.1.4.1.9.9.818ciscoNatCgnExtMIBCISCO-NAT-CGN-EXT-MIB
1.3.6.1.4.1.9.9.818.1ciscoNatCgnExtMIBObjectsCISCO-NAT-CGN-EXT-MIB
1.3.6.1.4.1.9.9.818.1.2cNatCgnCountersCISCO-NAT-CGN-EXT-MIB
1.3.6.1.4.1.9.9.818.1.2.1cNatCgnCounterTableCISCO-NAT-CGN-EXT-MIB
1.3.6.1.4.1.9.9.818.1.2.1.1cNatCgnCounterEntryCISCO-NAT-CGN-EXT-MIB
1.3.6.1.4.1.9.9.818.1.2.1.1.15cNatCgnCounterPortUsageHighThresholdCISCO-NAT-CGN-EXT-MIB