All MIBs › IPMROUTE-STD-MIB › ipMRouteUpstreamNeighbor
ipMRouteUpstreamNeighbor
Module: IPMROUTE-STD-MIB
OID (symbolic): IPMROUTE-STD-MIB::ipMRouteUpstreamNeighbor
OID (numeric): 1.3.6.1.2.1.83.1.1.2.1.4
Node type: OBJECT-TYPE
Type: IpAddress
Access: read-only
Description: The address of the upstream neighbor (e.g., RPF neighbor) from which IP datagrams from these sources to this multicast address are received, or 0.0.0.0 if the upstream neighbor is unknown (e.g., in CBT).
What is ipMRouteUpstreamNeighbor?
This value reports the address of the upstream (RPF) neighbor from which multicast datagrams for a given source and group are expected to arrive, or 0.0.0.0 if that neighbor is unknown, as in CBT. An admin uses it to verify the router's reverse-path-forwarding decision matches the expected topology when diagnosing multicast delivery problems. For example, if ipMRouteUpstreamNeighbor points to an unexpected router, it suggests the unicast routing table is steering the RPF check down an unintended path.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.83.1.1.2.1.4 snmpwalk -v2c -c public <target> IPMROUTE-STD-MIB::ipMRouteUpstreamNeighbor
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.83.1.1.2.1.4.1 snmpget -v2c -c public <target> IPMROUTE-STD-MIB::ipMRouteUpstreamNeighbor.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 |
| 1.3.6.1.2.1.83.1.1.2.1.4 | ipMRouteUpstreamNeighbor | IPMROUTE-STD-MIB |