All MIBs › DNS-RESOLVER-MIB › dnsResNCacheBadNCaches
dnsResNCacheBadNCaches
Module: DNS-RESOLVER-MIB
OID (symbolic): DNS-RESOLVER-MIB::dnsResNCacheBadNCaches
OID (numeric): 1.3.6.1.2.1.32.2.1.5.4
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: Number of authoritative errors the resolver would have liked to cache but was unable to because the appropriate SOA RR was not supplied or looked suspicious.
What is dnsResNCacheBadNCaches?
This OID counts the number of times the DNS system tried to save negative caching information (answers saying 'domain not found') but couldn't because the source data looked invalid or incomplete. It's a counter that only increases. Operators monitor this to spot DNS resolver reliability issues or problems with upstream DNS servers.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.32.2.1.5.4 snmpwalk -v2c -c public <target> DNS-RESOLVER-MIB::dnsResNCacheBadNCaches
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.32.2.1.5.4.1 snmpget -v2c -c public <target> DNS-RESOLVER-MIB::dnsResNCacheBadNCaches.1
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OID Breakdown
Upper-level ancestors (7 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 |
| 1.3.6.1.2 | mgmt | AXON-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| 1.3.6.1.2.1.32 | dns | DNS-SERVER-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.32.2 | dnsResMIB | DNS-RESOLVER-MIB |
| 1.3.6.1.2.1.32.2.1 | dnsResMIBObjects | DNS-RESOLVER-MIB |
| 1.3.6.1.2.1.32.2.1.5 | dnsResNCache | DNS-RESOLVER-MIB |
| 1.3.6.1.2.1.32.2.1.5.4 | dnsResNCacheBadNCaches | DNS-RESOLVER-MIB |