All MIBs › CISCOSB-IPV6FHS-MIB › rlFirstHopSecCountersDropNdpRA
rlFirstHopSecCountersDropNdpRA
Module: CISCOSB-IPV6FHS-MIB
OID (symbolic): CISCOSB-IPV6FHS-MIB::rlFirstHopSecCountersDropNdpRA
OID (numeric): 1.3.6.1.4.1.9.6.1.101.215.1.8.1.3
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: Number of NDP Router Advertisement messages dropped on the interface.
What is rlFirstHopSecCountersDropNdpRA?
This read-only Counter32 tallies the number of NDP Router Advertisement messages dropped on the interface since the counter was last reset. An admin cares because how many RAs FHS has blocked on the interface, a direct signal of rogue-router activity or misconfigured RA Guard policy, so watching this counter helps spot attacks, misconfigured neighboring devices, or an overly strict policy. For example, if this counter on port Gi1/0/3 climbs rapidly right after a new device joins the LAN, it is a strong clue that device is the source of the offending IPv6 traffic on that link.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.215.1.8.1.3 snmpwalk -v2c -c public <target> CISCOSB-IPV6FHS-MIB::rlFirstHopSecCountersDropNdpRA
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.215.1.8.1.3.1 snmpget -v2c -c public <target> CISCOSB-IPV6FHS-MIB::rlFirstHopSecCountersDropNdpRA.1
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OID Breakdown
Upper-level ancestors (10 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 |
| 1.3.6.1.4.1.9.6 | otherEnterprises | CISCO-SMI |
| 1.3.6.1.4.1.9.6.1 | ciscoSB | CISCO-SMI |
| 1.3.6.1.4.1.9.6.1.101 | switch001 | CISCOSB-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.6.1.101.215 | rlIpv6Fhs | CISCOSB-IPV6FHS-MIB |
| 1.3.6.1.4.1.9.6.1.101.215.1 | rlFirstHopSec | CISCOSB-IPV6FHS-MIB |
| 1.3.6.1.4.1.9.6.1.101.215.1.8 | rlFirstHopSecCountersTable | CISCOSB-IPV6FHS-MIB |
| 1.3.6.1.4.1.9.6.1.101.215.1.8.1 | rlFirstHopSecCountersEntry | CISCOSB-IPV6FHS-MIB |
| 1.3.6.1.4.1.9.6.1.101.215.1.8.1.3 | rlFirstHopSecCountersDropNdpRA | CISCOSB-IPV6FHS-MIB |