All MIBs › F5-BIGIP-COMMON-MIB › bigipDnsRequestRateLimiterEngaged
bigipDnsRequestRateLimiterEngaged
Module: F5-BIGIP-COMMON-MIB
OID (symbolic): F5-BIGIP-COMMON-MIB::bigipDnsRequestRateLimiterEngaged
OID (numeric): 1.3.6.1.4.1.3375.2.4.0.139
Node type: NOTIFICATION-TYPE
Description:
The DNS Services request rate limiter has been engaged.
What is bigipDnsRequestRateLimiterEngaged?
This notification alerts that the DNS request rate limiter has become active, meaning DNS query rates have reached a threshold requiring traffic control. F5 DNS/GTM administrators use this trap to detect DDoS attacks or unexpected traffic surges that are being mitigated by rate limiting. The alert prompts investigation of query sources and potential customer impact assessment.
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> '' F5-BIGIP-COMMON-MIB::bigipDnsRequestRateLimiterEngaged snmptrap -v2c -c public <manager> '' 1.3.6.1.4.1.3375.2.4.0.139
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]:49994->[192.168.30.10]:162]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (25862986) 2 days, 23:50:29.86 SNMPv2-MIB::snmpTrapOID.0 = OID: F5-BIGIP-COMMON-MIB::bigipDnsRequestRateLimiterEngaged
OID Breakdown
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | BIANCA-BRICK-PPP-MIB |
| 1.3.6 | dod | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1 | internet | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1.4 | private | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1.4.1 | enterprises | ANIROOT-MIB |
| 1.3.6.1.4.1.3375 | f5 | F5-BIGIP-COMMON-MIB |
| 1.3.6.1.4.1.3375.2 | bigipTrafficMgmt | F5-BIGIP-COMMON-MIB |
| 1.3.6.1.4.1.3375.2.4 | bigipNotification | F5-BIGIP-COMMON-MIB |
| 1.3.6.1.4.1.3375.2.4.0 | bigipNotifications | F5-BIGIP-COMMON-MIB |
| 1.3.6.1.4.1.3375.2.4.0.139 | bigipDnsRequestRateLimiterEngaged | F5-BIGIP-COMMON-MIB |