ipMcastRouteDifferentInIfOctets
IPMCAST-MIB ·
.1.3.6.1.2.1.168.1.5.1.22
Object
column
SNMPv2-SMICounter64
The number of octets contained in IP datagrams that this
router has received from these sources and addressed to this
multicast group address, which were dropped because they
were received on an unexpected interface.
For RPF checking protocols (such as PIM-SM), these packets
arrived on interfaces other than ipMcastRouteInIfIndex, and
were dropped because of this failed RPF check. (RPF paths
are 'Reverse Path Forwarding' paths; the unicast routes to
the expected origin of multicast data flows).
Other protocols may drop packets on an incoming interface
check for different reasons (for example, BIDIR-PIM performs
a DF check on receipt of packets). All packets dropped as a
result of an incoming interface check are counted here.
If this counter increases rapidly, this indicates a problem.
A significant quantity of multicast data is arriving at this
router on unexpected interfaces, and is not being forwarded.
For guidance, if the rate of increase of this counter
exceeds 1% of the rate of increase of ipMcastRouteOctets,
then there are multicast routing problems that require
investigation.
Discontinuities in this monotonically increasing value
occur at re-initialization of the management system.
Discontinuities can also occur as a result of routes being
removed and replaced, which can be detected by observing
the value of ipMcastRouteTimeStamp.
Context
- MIB
- IPMCAST-MIB
- OID
.1.3.6.1.2.1.168.1.5.1.22- Type
- column
- Access
- readonly
- Status
- current
- Parent
- ipMcastRouteEntry
- Table
- ipMcastRouteTable
- Siblings
- 23
Syntax
SNMPv2-SMICounter64
- Source
- SNMPv2-SMICounter64
- Base type
Unsigned64
Values & Constraints
Type Constraints
range: 0..18446744073709551615
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| ipMcastRouteGroupAddressType A value indicating the address family of the address
contained in ipMcastRouteGroup. Legal values correspond to
the subset of address families for which multicast
forwarding is s… | column | INET-ADDRESS-MIBInetAddressType | .1.3.6.1.2.1.168.1.5.1.1 |
| ipMcastRouteTimeStamp The value of sysUpTime at which the multicast routing
information represented by this entry was learned by the
router.
If this information was present at the most r… | column | SNMPv2-TCTimeStamp | .1.3.6.1.2.1.168.1.5.1.10 |
| ipMcastRouteExpiryTime The minimum amount of time remaining before this entry will
be aged out. The value 0 indicates that the entry is not
subject to aging. If ipMcastRouteNextHopState is pruned(1),
… | column | SNMPv2-SMITimeTicks | .1.3.6.1.2.1.168.1.5.1.11 |
| ipMcastRouteProtocol The multicast routing protocol via which this multicast
forwarding entry was learned. | column | IANA-RTPROTO-MIBIANAipMRouteProtocol | .1.3.6.1.2.1.168.1.5.1.12 |
| ipMcastRouteRtProtocol The routing mechanism via which the route used to find the
upstream or parent interface for this multicast forwarding
entry was learned. | column | IANA-RTPROTO-MIBIANAipRouteProtocol | .1.3.6.1.2.1.168.1.5.1.13 |
| ipMcastRouteRtAddressType A value indicating the address family of the address
contained in ipMcastRouteRtAddress. | column | INET-ADDRESS-MIBInetAddressType | .1.3.6.1.2.1.168.1.5.1.14 |
| ipMcastRouteRtAddress The address portion of the route used to find the upstream
or parent interface for this multicast forwarding entry.
This address object is only significant up to
ip… | column | INET-ADDRESS-MIBInetAddress | .1.3.6.1.2.1.168.1.5.1.15 |
| ipMcastRouteRtPrefixLength The length in bits of the mask associated with the route
used to find the upstream or parent interface for this
multicast forwarding entry.
The InetAddressType is g… | column | INET-ADDRESS-MIBInetAddressPrefixLength | .1.3.6.1.2.1.168.1.5.1.16 |
| ipMcastRouteRtType The reason the given route was placed in the (logical)
multicast Routing Information Base (RIB). A value of
unicast means that the route would normally be placed only
in the unic… | column | Enumeration | .1.3.6.1.2.1.168.1.5.1.17 |
| ipMcastRouteOctets The number of octets contained in IP datagrams that were
received from these sources and addressed to this multicast
group address, and which were forwarded by this router.
… | column | SNMPv2-SMICounter64 | .1.3.6.1.2.1.168.1.5.1.18 |
| ipMcastRoutePkts The number of packets routed using this multicast route
entry.
Discontinuities in this monotonically increasing value
occur at re-initialization of the management s… | column | SNMPv2-SMICounter64 | .1.3.6.1.2.1.168.1.5.1.19 |
| ipMcastRouteGroup The IP multicast group address which, when combined with
the corresponding value specified in
ipMcastRouteGroupPrefixLength, identifies the groups for
which this entry contains mu… | column | INET-ADDRESS-MIBInetAddress | .1.3.6.1.2.1.168.1.5.1.2 |
| ipMcastRouteTtlDropOctets The number of octets contained in IP datagrams that this
router has received from these sources and addressed to this
multicast group address, which were dropped because the TTL
(… | column | SNMPv2-SMICounter64 | .1.3.6.1.2.1.168.1.5.1.20 |
| ipMcastRouteTtlDropPackets The number of packets that this router has received from
these sources and addressed to this multicast group address,
which were dropped because the TTL (IPv4) or Hop Limit
(IPv6)… | column | SNMPv2-SMICounter64 | .1.3.6.1.2.1.168.1.5.1.21 |
| ipMcastRouteDifferentInIfPackets 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 received on an
unexpect… | column | SNMPv2-SMICounter64 | .1.3.6.1.2.1.168.1.5.1.23 |
| ipMcastRouteBps Bits per second forwarded by this router using this
multicast routing entry.
This value is a sample; it is the number of bits forwarded
during the last whole 1 seco… | column | bits per second HCNUM-TCCounterBasedGauge64 | .1.3.6.1.2.1.168.1.5.1.24 |
| ipMcastRouteGroupPrefixLength The length in bits of the mask which, when combined with
the corresponding value of ipMcastRouteGroup, identifies the
groups for which this entry contains multicast routing
inform… | column | INET-ADDRESS-MIBInetAddressPrefixLength | .1.3.6.1.2.1.168.1.5.1.3 |
| ipMcastRouteSourceAddressType A value indicating the address family of the address
contained in ipMcastRouteSource.
A value of unknown(0) indicates a non-source-specific entry,
corresponding to … | column | INET-ADDRESS-MIBInetAddressType | .1.3.6.1.2.1.168.1.5.1.4 |
| ipMcastRouteSource The network address which, when combined with the
corresponding value of ipMcastRouteSourcePrefixLength,
identifies the sources for which this entry contains
multicast routing inf… | column | INET-ADDRESS-MIBInetAddress | .1.3.6.1.2.1.168.1.5.1.5 |
| ipMcastRouteSourcePrefixLength The length in bits of the mask which, when combined with
the corresponding value of ipMcastRouteSource, identifies
the sources for which this entry contains multicast routing
info… | column | INET-ADDRESS-MIBInetAddressPrefixLength | .1.3.6.1.2.1.168.1.5.1.6 |
| ipMcastRouteUpstreamNeighborType A value indicating the address family of the address
contained in ipMcastRouteUpstreamNeighbor.
An address type of unknown(0) indicates that the upstream
neighbor i… | column | INET-ADDRESS-MIBInetAddressType | .1.3.6.1.2.1.168.1.5.1.7 |
| ipMcastRouteUpstreamNeighbor The address of the upstream neighbor (for example, RPF
neighbor) from which IP datagrams from these sources to
this multicast address are received. | column | INET-ADDRESS-MIBInetAddress | .1.3.6.1.2.1.168.1.5.1.8 |
| ipMcastRouteInIfIndex The value of ifIndex for the interface on which IP
datagrams sent by these sources to this multicast address
are received. A value of 0 indicates that datagrams are not
subject t… | column | IF-MIBInterfaceIndexOrZero | .1.3.6.1.2.1.168.1.5.1.9 |