All MIBs › CISCO-RTTMON-MIB › rttMonLatestHTTPOperDNSRTT
rttMonLatestHTTPOperDNSRTT
Module: CISCO-RTTMON-MIB
OID (symbolic): CISCO-RTTMON-MIB::rttMonLatestHTTPOperDNSRTT
OID (numeric): 1.3.6.1.4.1.9.9.42.1.5.1.1.2
Node type: OBJECT-TYPE
Type: Gauge32
Access: read-only
Description: Round Trip Time taken to perform DNS query within the HTTP operation. If an IP Address is specified in the URL, then DNSRTT is 0.
What is rttMonLatestHTTPOperDNSRTT?
This OID stores the round-trip time in milliseconds it took to resolve a domain name (DNS lookup) during an HTTP probe test, or zero if the URL used an IP address directly. This metric reveals DNS bottlenecks. A network team watches this to detect slow DNS servers affecting application performance—for example, a spike to 500ms would indicate DNS timeout issues.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.42.1.5.1.1.2 snmpwalk -v2c -c public <target> CISCO-RTTMON-MIB::rttMonLatestHTTPOperDNSRTT
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.42.1.5.1.1.2.1 snmpget -v2c -c public <target> CISCO-RTTMON-MIB::rttMonLatestHTTPOperDNSRTT.1
Start monitoring Cisco Catalyst 9300 series switch (IP SLA/RTTMON) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCO-RTTMON-MIB::rttMonLatestHTTPOperDNSRTT OID value, configure state conditions and alerts, and monitor any Cisco Catalyst 9300 series switch (IP SLA/RTTMON) from a single console.
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 |
|---|---|---|
| 1.3.6.1.4.1.9.9.42 | ciscoRttMonMIB | CISCO-RTTMON-MIB |
| 1.3.6.1.4.1.9.9.42.1 | ciscoRttMonObjects | CISCO-RTTMON-MIB |
| 1.3.6.1.4.1.9.9.42.1.5 | rttMonLatestOper | CISCO-RTTMON-MIB |
| 1.3.6.1.4.1.9.9.42.1.5.1 | rttMonLatestHTTPOperTable | CISCO-RTTMON-MIB |
| 1.3.6.1.4.1.9.9.42.1.5.1.1 | rttMonLatestHTTPOperEntry | CISCO-RTTMON-MIB |
| 1.3.6.1.4.1.9.9.42.1.5.1.1.2 | rttMonLatestHTTPOperDNSRTT | CISCO-RTTMON-MIB |