All MIBs › CISCOSB-IPV6FHS-MIB › rlFirstHopSecCountersDropNbrBindingIntegrityIllegalIcmpv6
rlFirstHopSecCountersDropNbrBindingIntegrityIllegalIcmpv6
Module: CISCOSB-IPV6FHS-MIB
OID (symbolic): CISCOSB-IPV6FHS-MIB::rlFirstHopSecCountersDropNbrBindingIntegrityIllegalIcmpv6
OID (numeric): 1.3.6.1.4.1.9.6.1.101.215.1.8.1.37
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: Number of dropped ICMPv6 messages due to one of the following reasons: invalid source address, invalid destination address, invalid Hop-Limit, invalid ICMP code, invalid ICMP length, invalid ICMP checksum, invalid target address, invalid flag, invalid option.
What is rlFirstHopSecCountersDropNbrBindingIntegrityIllegalIcmpv6?
This read-only Counter32 tallies the number of dropped ICMPv6 messages found illegal under Neighbor Binding Integrity checks on the interface since the counter was last reset. An admin cares because packets failing basic ICMPv6 sanity checks (bad source/destination address, Hop-Limit, ICMP code/length/checksum, target address, flags, or options), 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> 1.3.6.1.4.1.9.6.1.101.215.1.8.1.37 snmpwalk -v2c -c public <target> CISCOSB-IPV6FHS-MIB::rlFirstHopSecCountersDropNbrBindingIntegrityIllegalIcmpv6
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.215.1.8.1.37.1 snmpget -v2c -c public <target> CISCOSB-IPV6FHS-MIB::rlFirstHopSecCountersDropNbrBindingIntegrityIllegalIcmpv6.1
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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 |
| 1.3.6.1.4.1.9.6.1.101.215.1.8.1.37 | rlFirstHopSecCountersDropNbrBindingIntegrityIllegalIcmpv6 | CISCOSB-IPV6FHS-MIB |