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ciscoNetRegDnsForwardersNotResp
Module: CISCO-NETWORK-REGISTRAR-MIB
OID (symbolic): CISCO-NETWORK-REGISTRAR-MIB::ciscoNetRegDnsForwardersNotResp
OID (numeric): 1.3.6.1.4.1.9.9.120.2.0.20
Node type: NOTIFICATION-TYPE
Description: This notification indicates that a DNS recursive resolver was not able to reach any of its configured forwarders. Once this situation is encountered generation of this notification will be suppressed until normal operation is resumed as indicated by the ciscoNetRegDnsForwardersResp notification.
The identity of the affected DNS resolving server is given by cnrNotifDnsServerIpAddress and the identity of the forwarders is given by the cnrRemoteServersList object.
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::ciscoNetRegDnsForwardersNotResp snmptrap -v2c -c public <manager> '' 1.3.6.1.4.1.9.9.120.2.0.20
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]:54047->[192.168.30.10]:162]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (165062943) 19 days, 2:30:29.43 SNMPv2-MIB::snmpTrapOID.0 = OID: CISCO-NETWORK-REGISTRAR-MIB::ciscoNetRegDnsForwardersNotResp
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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 |
| 1.3.6.1.4.1.9.9.120.2.0.20 | ciscoNetRegDnsForwardersNotResp | CISCO-NETWORK-REGISTRAR-MIB |