All MIBs › CISCO-NETWORK-REGISTRAR-MIB › ciscoNetRegFreeAddrLowThreshold
ciscoNetRegFreeAddrLowThreshold
Module: CISCO-NETWORK-REGISTRAR-MIB
OID (symbolic): CISCO-NETWORK-REGISTRAR-MIB::ciscoNetRegFreeAddrLowThreshold
OID (numeric): 1.3.6.1.4.1.9.9.120.2.0.11
Node type: NOTIFICATION-TYPE
Description: This notification signifies that the number of available IP addresses for a particular scope has fallen below the value of cnrNotifDHCPScopeFreeAddrLow for that scope.
This notification signals a shortage of addresses. The shortage will continue until the number of free addresses has reached or exceeded the number specified by the cnrNotifDHCPScopeFreeAddrHigh object. This notification will only be generated when the shortages of IP addresses in first encountered.
If the threshold type is scope or subnet, then the value is the primary or secondary subnet number, and if the type is selection-tag, then the value is the selection tag list.
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-NETWORK-REGISTRAR-MIB::ciscoNetRegFreeAddrLowThreshold snmptrap -v2c -c public <manager> '' 1.3.6.1.4.1.9.9.120.2.0.11
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]:61514->[192.168.30.10]:162]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (423092810) 48 days, 23:15:28.10 SNMPv2-MIB::snmpTrapOID.0 = OID: CISCO-NETWORK-REGISTRAR-MIB::ciscoNetRegFreeAddrLowThreshold
SNMPv3 example:
snmptrap -v3 -l authPriv -u snmpv3user -a SHA -A "AuthPass1" -x AES -X "PrivPass1" <manager> '' CISCO-NETWORK-REGISTRAR-MIB::ciscoNetRegFreeAddrLowThreshold
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OID Breakdown
Upper-level ancestors (8 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.9 | cisco | CAT2600-MIB |
| 1.3.6.1.4.1.9.9 | ciscoMgmt | CISCO-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.9.120 | ciscoNetworkRegistrarMIB | CISCO-NETWORK-REGISTRAR-MIB |
| 1.3.6.1.4.1.9.9.120.2 | ciscoNetRegMIBNotificationPrefix | CISCO-NETWORK-REGISTRAR-MIB |
| 1.3.6.1.4.1.9.9.120.2.0 | ciscoNetRegMIBNotifications | CISCO-NETWORK-REGISTRAR-MIB |
| 1.3.6.1.4.1.9.9.120.2.0.11 | ciscoNetRegFreeAddrLowThreshold | CISCO-NETWORK-REGISTRAR-MIB |