CISCO-NAT-CGN-EXT-MIB :: cNatCgnNotifPortUsageWatermarkLowClear

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

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

cNatCgnNotifPortUsageWatermarkLowClear

Module: CISCO-NAT-CGN-EXT-MIB

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

OID (numeric): 1.3.6.1.4.1.9.9.818.0.2

Node type: NOTIFICATION-TYPE

Description: The device generates this notification when the value of cNatCgnCounterCurrentPortAllocation becomes higher than or equal to the value of cNatCgnCounterPortUsageClearLowThreshold and if cNatCgnNotifPortUsageWatermarkLow is already generated. The device will not generate notification if cNatCgnCounterPortUsageClearLowThreshold is set to zero.

Examples

Send this trap to an SNMP manager — replace <manager> with the IP or hostname of your monitoring server (SNMPv2c):

snmptrap -v2c -c public <manager> '' CISCO-NAT-CGN-EXT-MIB::cNatCgnNotifPortUsageWatermarkLowClear
snmptrap -v2c -c public <manager> '' 1.3.6.1.4.1.9.9.818.0.2

Listen for incoming traps on the manager host (-f keeps it in the foreground, -Lo prints to stdout — useful for testing):

snmptrapd -f -Lo -c /dev/null authCommunity log public

Example snmptrapd log entry:

zoo11-linux.zoo [UDP: [192.168.30.111]:63968->[192.168.30.10]:162]:
  DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (234885088) 27 days, 4:27:30.88
  SNMPv2-MIB::snmpTrapOID.0 = OID: CISCO-NAT-CGN-EXT-MIB::cNatCgnNotifPortUsageWatermarkLowClear

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::cNatCgnNotifPortUsageWatermarkLowClear 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
1.3.6.1.4.1.9.9.818.0ciscoNatCgnExtMIBNotifsCISCO-NAT-CGN-EXT-MIB
1.3.6.1.4.1.9.9.818.0.2cNatCgnNotifPortUsageWatermarkLowClearCISCO-NAT-CGN-EXT-MIB