All MIBs › CISCOSB-IPV6FHS-MIB › rlFirstHopSecCountersDropDhcpAdverise
rlFirstHopSecCountersDropDhcpAdverise
Module: CISCOSB-IPV6FHS-MIB
OID (symbolic): CISCOSB-IPV6FHS-MIB::rlFirstHopSecCountersDropDhcpAdverise
OID (numeric): 1.3.6.1.4.1.9.6.1.101.215.1.8.1.13
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: Number of DHCPv6 ADVERTISE messages dropped on the interface.
What is rlFirstHopSecCountersDropDhcpAdverise?
This read-only Counter32 tallies the number of DHCPv6 ADVERTISE messages dropped on the interface since the counter was last reset. An admin cares because DHCPv6 ADVERTISE messages blocked, which points to an unauthorized DHCPv6 server trying to respond on that port, 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> 1.3.6.1.4.1.9.6.1.101.215.1.8.1.13 snmpwalk -v2c -c public <target> CISCOSB-IPV6FHS-MIB::rlFirstHopSecCountersDropDhcpAdverise
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.6.1.101.215.1.8.1.13.1 snmpget -v2c -c public <target> CISCOSB-IPV6FHS-MIB::rlFirstHopSecCountersDropDhcpAdverise.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 |
| 1.3.6.1.4.1.9.6.1.101.215.1.8.1.13 | rlFirstHopSecCountersDropDhcpAdverise | CISCOSB-IPV6FHS-MIB |