All MIBs › IPMROUTE-STD-MIB › ipMRouteDifferentInIfPackets
ipMRouteDifferentInIfPackets
Module: IPMROUTE-STD-MIB
OID (symbolic): IPMROUTE-STD-MIB::ipMRouteDifferentInIfPackets
OID (numeric): 1.3.6.1.2.1.83.1.1.2.1.9
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: The number of packets which this router has received from these sources and addressed to this multicast group address, which were dropped because they were not received on the interface indicated by ipMRouteInIfIndex. Packets which are not subject to an incoming interface check (e.g., using CBT) are not counted.
What is ipMRouteDifferentInIfPackets?
This counter tracks packets for a given multicast source and group that were dropped because they arrived on an interface other than the one identified by ipMRouteInIfIndex, the expected incoming interface, excluding protocols like CBT that skip this check. An admin watches this counter to detect asymmetric routing or misconfiguration causing the reverse-path-forwarding check to fail. A steadily climbing value here points to multicast traffic arriving on the wrong interface and being silently discarded.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.83.1.1.2.1.9 snmpwalk -v2c -c public <target> IPMROUTE-STD-MIB::ipMRouteDifferentInIfPackets
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.83.1.1.2.1.9.1 snmpget -v2c -c public <target> IPMROUTE-STD-MIB::ipMRouteDifferentInIfPackets.1
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OID Breakdown
Upper-level ancestors (6 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 |
| 1.3.6.1.2 | mgmt | AXON-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.83 | ipMRouteStdMIB | IPMROUTE-STD-MIB |
| 1.3.6.1.2.1.83.1 | ipMRouteMIBObjects | IPMROUTE-STD-MIB |
| 1.3.6.1.2.1.83.1.1 | ipMRoute | IPMROUTE-STD-MIB |
| 1.3.6.1.2.1.83.1.1.2 | ipMRouteTable | IPMROUTE-STD-MIB |
| 1.3.6.1.2.1.83.1.1.2.1 | ipMRouteEntry | IPMROUTE-STD-MIB |
| 1.3.6.1.2.1.83.1.1.2.1.9 | ipMRouteDifferentInIfPackets | IPMROUTE-STD-MIB |