CISCO-IPMROUTE-MIB

All MIBs › CISCO-IPMROUTE-MIB

Organization: ciscoSytems

Last Updated: 2005-03-07

Category: Cisco Devices, Routing Protocols

Description: Manages IP multicast routing information base (MRIB) entries and multicast routing protocol statistics.

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What Is CISCO-IPMROUTE-MIB?

CISCO-IPMROUTE-MIB manages the IP Multicast Routing Information Base (MRIB) on Cisco routers, independent of the specific multicast routing protocol (e.g., PIM) in use, belonging to the IP multicast routing management area. It exposes per-multicast-route entries with flags indicating route type and state (pruned, sparse-mode, connected, local, register, RP, SPT) along with traffic rate (bps) and routing metric. This supports monitoring the operational health of multicast forwarding, since a route unexpectedly showing the prune flag set, or a bps counter dropping to zero, reveals a broken or pruned multicast distribution path affecting downstream receivers. It works alongside protocol-specific multicast MIBs (e.g., PIM MIB) that provide the routing-protocol detail behind these generic MRIB entries. It is typically deployed in enterprise and service-provider networks delivering IPTV, video conferencing, or other multicast applications. Engineers can download the CISCO-IPMROUTE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-IPMROUTE-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Cisco routers
Cisco multicast-enabled routers

Monitoring Examples

An administrator polls ciscoIpMRouteTable (ciscoIpMRouteEntry rows) to check ciscoIpMRoutePruneFlag and ciscoIpMRouteSparseFlag for a given multicast route, confirming whether the route is active or has been pruned from the distribution tree. Monitoring ciscoIpMRouteBps reveals the current multicast traffic rate for that route, and a sudden drop to zero despite active receivers would indicate a broken forwarding path. Checking ciscoIpMRouteRpFlag and ciscoIpMRouteSptFlag together with ciscoIpMRouteMetric helps confirm whether the router is using the shared tree via the rendezvous point or has switched to the shortest-path tree, and ciscoIpMRouteNumberOfEntries tracks overall multicast route table growth.

What Can Be Monitored

multicast route entries
prune/sparse/connected/local flags
multicast traffic rate (bps)
routing metric
RP/SPT flag status
total multicast route count

Imported Objects

From CISCO-SMI

ciscoExperiment

OBJECT-IDENTITY

From HCNUM-TC

CounterBasedGauge64

From IPMROUTE-STD-MIB

ipMRouteEntry	OBJECT-TYPE
ipMRouteInterfaceEntry	OBJECT-TYPE
ipMRouteNextHopEntry	OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

RowStatus
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using ciscoIpMRoutePkts OID:

Select a Cisco multicast-enabled router as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type ciscoIpMRoutePkts into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The number of packets which this router has received from these sources and addressed to this multicast group address. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter64-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoIpMRouteMIB	1.3.6.1.4.1.9.10.2			The MIB module for management of IP Multicast routing, but independent of the specific multicast routing protocol in use.
ciscoIpMRouteMIBObjects	1.3.6.1.4.1.9.10.2.1
ciscoIpMRoute	1.3.6.1.4.1.9.10.2.1.1
G32 ciscoIpMRouteNumberOfEntries	1.3.6.1.4.1.9.10.2.1.1.1	Gauge32	read-only	Maintains a count of the number of entries in the ipMRouteTable.
ciscoIpMRouteTable	1.3.6.1.4.1.9.10.2.1.1.2		not-accessible	The (conceptual) table containing multicast routing information for IP datagrams sent by particular sources to the IP multicast groups known to this router. This table is augmented to the ipMRouteTable.
ciscoIpMRouteEntry	1.3.6.1.4.1.9.10.2.1.1.2.1		not-accessible	An entry (conceptual row) containing the multicast routing information for IP datagrams from a particular source and addressed to a particular IP multicast group address.
T/F ciscoIpMRoutePruneFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.12	TruthValue	read-only	Boolean, indicates whether this route is pruned. A pruned route is one that has an empty outgoing interface list or all interfaces are in Pruned state. A multicast packet that matches a pruned route doesn't get forwarded.
T/F ciscoIpMRouteSparseFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.13	TruthValue	read-only	Boolean, indicating PIM multicast routing protocol sparse-mode (versus dense-mode). In sparse-mode, packets are forwarded only out interfaces that have been joined. In dense-mode, they are forwarded out all interfaces that have not been pruned.
T/F ciscoIpMRouteConnectedFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.14	TruthValue	read-only	Boolean, indicating whether there is a directly connected member for a group attached to the router.
T/F ciscoIpMRouteLocalFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.15	TruthValue	read-only	Boolean, indicating whether local system is a member of a group on any interface.
T/F ciscoIpMRouteRegisterFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.16	TruthValue	read-only	Boolean, indicates whether to send registers for the entry. A first hop router directly connected to a multicast source host, as well as a border router on the boundary of two domains running different multicast routing protocols, encapsulates packets to be sent on the shared tree. This is done until the RP sends Joins back to this router.
T/F ciscoIpMRouteRpFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.17	TruthValue	read-only	Boolean, indicating whether there is a Prune state for this source along the shared tree.
T/F ciscoIpMRouteSptFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.18	TruthValue	read-only	Boolean, indicating whether data is being received on the SPT tree, ie the Shortest Path Tree.
G32 ciscoIpMRouteBps	1.3.6.1.4.1.9.10.2.1.1.2.1.19	Gauge32	read-only	Bits per second forwarded by this router. This is the sum of all forwarded bits during a 1 second interval. At the end of each second the field is cleared. This object has been superseded by ciscoIpMRouteBps2 (which is the 64-bit version of this object).
I32 ciscoIpMRouteMetric	1.3.6.1.4.1.9.10.2.1.1.2.1.20	Integer32	read-only	Metric - The best metric heard from Assert messages. This object has been replaced by ciscoIpMRouteMetric2 in order to correctly represent a 32-bit unsigned metric value.
I32 ciscoIpMRouteMetricPreference	1.3.6.1.4.1.9.10.2.1.1.2.1.21	Integer32	read-only	Metric Preference - The best metric preference heard from Assert messages.
I32 ciscoIpMRouteInLimit	1.3.6.1.4.1.9.10.2.1.1.2.1.22	Integer32	read-only	Incoming interface's limit for rate limiting data traffic, in Kbps. Replaced by ciscoIpMRouteInLimit2.
TIK ciscoIpMRouteLastUsed	1.3.6.1.4.1.9.10.2.1.1.2.1.23	TimeTicks	read-only	How long has it been since the last multicast packet was fastswitched.
G32 ciscoIpMRouteInLimit2	1.3.6.1.4.1.9.10.2.1.1.2.1.24	Gauge32	read-only	Incoming interface's limit for rate limiting data traffic, in Kbps.
T/F ciscoIpMRouteJoinFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.25	TruthValue	read-only	Boolean, indicates whether this route is created due to SPT threshold.
T/F ciscoIpMRouteMsdpFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.26	TruthValue	read-only	Boolean, indicates whether this route is learned via MSDP.
T/F ciscoIpMRouteProxyJoinFlag	1.3.6.1.4.1.9.10.2.1.1.2.1.27	TruthValue	read-only	Boolean, indicates whether to send join for this entry.
C64 ciscoIpMRoutePktsEx	1.3.6.1.4.1.9.10.2.1.1.2.1.28	Counter64	read-only	The number of packets which this router has received from these sources and addressed to this multicast group address. This object is a 64-bit version of ipMRoutePkts.
C64 ciscoIpMRouteDifferentInIfPkts	1.3.6.1.4.1.9.10.2.1.1.2.1.29	Counter64	read-only	The number of packets which this router has received from these sources and addressed to this multicast group address, which were not received from the interface indicated by ipMRouteInIfIndex. This object is a 64-bit version of ipMRouteDifferentInIfPackets.
C64 ciscoIpMRouteOctets	1.3.6.1.4.1.9.10.2.1.1.2.1.30	Counter64	read-only	The number of octets contained in IP datagrams which were received from these sources and addressed to this multicast group address, and which were forwarded by this router. This object is a 64-bit version of ipMRouteOctets.
NUM ciscoIpMRouteBps2	1.3.6.1.4.1.9.10.2.1.1.2.1.31	CounterBasedGauge64	read-only	Bits per second forwarded by this router. This is the sum of all forwarded bits during a 1 second interval. At the end of each second the field is cleared.
U32 ciscoIpMRouteMetric2	1.3.6.1.4.1.9.10.2.1.1.2.1.32	Unsigned32	read-only	Metric - The best metric heard from Assert messages.
ciscoIpMRouteNextHopTable	1.3.6.1.4.1.9.10.2.1.1.3		not-accessible	The (conceptual) table containing information on the next hops on outgoing interfaces for routing IP multicast datagrams. Each entry is one of a list of next hops on outgoing interfaces for particular sources sending to a particular multicast group address.
ciscoIpMRouteNextHopEntry	1.3.6.1.4.1.9.10.2.1.1.3.1		not-accessible	An entry (conceptual row) in the list of next hops on outgoing interfaces to which IP multicast datagrams from particular sources to a IP multicast group address are routed.
G32 ciscoIpMRouteNextHopOutLimit	1.3.6.1.4.1.9.10.2.1.1.3.1.9	Gauge32	read-only	An outgoing interface's limit for rate limiting data traffic, in Kbps.
OCT ciscoIpMRouteNextHopMacHdr	1.3.6.1.4.1.9.10.2.1.1.3.1.10	OCTET STRING	read-only	The data link mac address header for a multicast datagram. Used by IP multicast fastswitching.
C64 ciscoIpMRouteNextHopPkts	1.3.6.1.4.1.9.10.2.1.1.3.1.11	Counter64	read-only	The number of packets which have been forwarded using this route. This object is a 64-bit version of ipMRouteNextHopPkts.
ciscoIpMRouteHeartBeatTable	1.3.6.1.4.1.9.10.2.1.1.4		not-accessible	The (conceptual) table listing sets of IP Multicast heartbeat parameters. If no IP Multicast heartbeat is configured, this table would be empty.
ciscoIpMRouteHeartBeatEntry	1.3.6.1.4.1.9.10.2.1.1.4.1		not-accessible	An entry (conceptual row) representing a set of IP Multicast heartbeat parameters.
IP ciscoIpMRouteHeartBeatGroupAddr	1.3.6.1.4.1.9.10.2.1.1.4.1.1	IpAddress	not-accessible	Multicast group address used to receive heartbeat packets.
IP ciscoIpMRouteHeartBeatSourceAddr	1.3.6.1.4.1.9.10.2.1.1.4.1.2	IpAddress	read-only	Source address of the last multicast heartbeat packet received.
I32 ciscoIpMRouteHeartBeatInterval	1.3.6.1.4.1.9.10.2.1.1.4.1.3	Integer32	read-create	Number of seconds in which a Cisco multicast router expects a valid heartBeat packet from a source. This value must be a multiple of 10.
I32 ciscoIpMRouteHeartBeatWindowSize	1.3.6.1.4.1.9.10.2.1.1.4.1.4	Integer32	read-create	Number of ciscoIpMRouteHeartBeatInterval intervals a Cisco multicast router waits before checking if expected number of heartbeat packets are received or not.
G32 ciscoIpMRouteHeartBeatCount	1.3.6.1.4.1.9.10.2.1.1.4.1.5	Gauge32	read-only	Number of time intervals where multicast packets were received in the last ciscoIpMRouteHeartBeatWindowSize intervals.
I32 ciscoIpMRouteHeartBeatMinimum	1.3.6.1.4.1.9.10.2.1.1.4.1.6	Integer32	read-create	The minimal number of heartbeat packets expected in the last ciscoIpMRouteHeartBeatWindowSize intervals. If ciscoIpMRouteHeartBeatCount falls below this value, an SNMP trap/notification, if configured, will be sent to the NMS.
TIM ciscoIpMRouteHeartBeatAlertTime	1.3.6.1.4.1.9.10.2.1.1.4.1.7	TimeStamp	read-only	The value of sysUpTime on the most recent occasion at which a missing IP multicast heartbeat condition occured for the group address specified in this entry. If no such condition have occurred since the last re-initialization of the local management subsystem, then this object contains a zero value.
ROW ciscoIpMRouteHeartBeatStatus	1.3.6.1.4.1.9.10.2.1.1.4.1.8	RowStatus	read-create	This object is used to create a new row or delete an existing row in this table.
ciscoIpMRouteInterfaceTable	1.3.6.1.4.1.9.10.2.1.1.5		not-accessible	The (conceptual) table containing multicast routing information specific to interfaces. This table augments the ipMRouteInterfaceTable.
ciscoIpMRouteInterfaceEntry	1.3.6.1.4.1.9.10.2.1.1.5.1		not-accessible	An entry (conceptual row) containing the multicast routing information for a particular interface.
C64 ciscoIpMRouteIfInMcastOctets	1.3.6.1.4.1.9.10.2.1.1.5.1.1	Counter64	read-only	The number of octets of multicast packets that have arrived on the interface. This object is a 64-bit version of ipMRouteInterfaceInMcastOctets.
C64 ciscoIpMRouteIfOutMcastOctets	1.3.6.1.4.1.9.10.2.1.1.5.1.2	Counter64	read-only	The number of octets of multicast packets that have been sent on the interface. This object is a 64-bit version of ipMRouteInterfaceOutMcastOctets.
C32 ciscoIpMRouteIfInMcastPkts	1.3.6.1.4.1.9.10.2.1.1.5.1.3	Counter32	read-only	The number of multicast packets that have arrived on the interface.
C64 ciscoIpMRouteIfHCInMcastPkts	1.3.6.1.4.1.9.10.2.1.1.5.1.4	Counter64	read-only	The number of multicast packets that have arrived on the interface. This object is a 64-bit version of ciscoIpMRouteIfInMcastPkts
C32 ciscoIpMRouteIfOutMcastPkts	1.3.6.1.4.1.9.10.2.1.1.5.1.5	Counter32	read-only	The number of multicast packets that have been sent on the interface.
C64 ciscoIpMRouteIfHCOutMcastPkts	1.3.6.1.4.1.9.10.2.1.1.5.1.6	Counter64	read-only	The number of multicast packets that have been sent on the interface. This object is a 64-bit version of ciscoIpMRouteIfOutMcastPkts
ciscoIpMRouteMIBConformance	1.3.6.1.4.1.9.10.2.2
ciscoIpMRouteMIBCompliances	1.3.6.1.4.1.9.10.2.2.1
ciscoIpMRouteMIBCompliance	1.3.6.1.4.1.9.10.2.2.1.1			The compliance statement for the cisco IP Multicast MIB. Superseded by ciscoIpMRouteComplianceV11R01.
ciscoIpMRouteMIBComplianceV11R01	1.3.6.1.4.1.9.10.2.2.1.2			The compliance statement for the cisco IP Multicast MIB. Superseded by ciscoIpMRouteComplianceV12R00S.
ciscoIpMRouteMIBComplianceV12R00S	1.3.6.1.4.1.9.10.2.2.1.3			The compliance statement for the cisco IP Multicast MIB. Superseded by ciscoIpMRouteMIBComplianceV12R28S
ciscoIpMRouteMIBComplianceV12R28S	1.3.6.1.4.1.9.10.2.2.1.4			The compliance statement for the cisco IP Multicast MIB.
ciscoIpMRouteMIBGroups	1.3.6.1.4.1.9.10.2.2.2
ciscoIpMRouteMIBGroup	1.3.6.1.4.1.9.10.2.2.2.1			A collection of objects to support management of IP Multicast routing. Superseded by ciscoIpMRouteMIBGroupV11R01.
ciscoIpMRouteMIBGroupV11R01	1.3.6.1.4.1.9.10.2.2.2.2			A collection of objects to support management of IP Multicast routing. Superseded by ciscoIpMRouteMIBGroupV12R00S.
ciscoIpMRouteMIBHeartBeatGroup	1.3.6.1.4.1.9.10.2.2.2.3			A collection of unconditionally optional objects to support IP Multicast heartbeat monitoring.
ciscoIpMRouteMIBGroupV12R00S	1.3.6.1.4.1.9.10.2.2.2.4			A collection of objects to support management of IP Multicast routing. Superseded by ciscoIpMRouteMIBGroupV12R28S
ciscoIpMRouteMIBNotifGroup	1.3.6.1.4.1.9.10.2.2.2.5			The collection of IPMroute related notifications.
ciscoIpMRouteMIBGroupV12R28S	1.3.6.1.4.1.9.10.2.2.2.6			A collection of objects to support management of IP Multicast routing.
ciscoIpMRouteMIBIfGroup	1.3.6.1.4.1.9.10.2.2.2.7			A collection of objects to support management of IP Multicast routing on an interface.
ciscoIpMRouteNotifications	1.3.6.1.4.1.9.10.2.3
ciscoIpMRouteMissingHeartBeatsNotificationPrefix	1.3.6.1.4.1.9.10.2.3.1
ciscoIpMRouteMissingHeartBeatsNotifications	1.3.6.1.4.1.9.10.2.3.1.0
NTF ciscoIpMRouteMissingHeartBeats	1.3.6.1.4.1.9.10.2.3.1.0.1			A ciscoIpMRouteMissingHeartBeat is sent if a multicast router with this feature enabled failed to receive configured number of heartbeat packets from heartbeat sources within a configured time interval.

RFC description

Manages IP multicast routing tables and statistics independent of specific multicast routing protocol.

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Download CISCO-IPMROUTE-MIB