RADLAN-rlDvmrp-MIB

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Organization: Radlan Computer Communications Ltd.

Last Updated: 2004-04-19

Category: IGMP and Multicast, Vendor: RADLAN/Cisco SB

Description: Manages DVMRP multicast routing protocol configuration and route table on Radlan switches.

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What Is RADLAN-rlDvmrp-MIB?

RADLAN-rlDvmrp-MIB is a vendor MIB from Radlan (an embedded switch software provider whose code underlies many private-label switches) covering DVMRP (Distance Vector Multicast Routing Protocol) configuration and route table state on Radlan-based switches. It exposes multicast routing configuration and operational data: protocol enable state, timer intervals (probe interval, neighbor timeout, flash update interval, route report interval, route expiration, and prune lifetime), and a route table showing designated forwarders for multicast routes. In monitoring terms it is used to track the health and behavior of the DVMRP multicast routing process -- for example confirming DVMRP is enabled, timers are set as expected, and the designated forwarder for a given route is the anticipated router -- functioning as a routing-protocol status module rather than one reporting CPU, memory, or environmental sensor data. It builds on general IP multicast routing concepts standardized informally around DVMRP (RFC 1075) and complements IF-MIB for interface association. It is typically deployed on Radlan-based Layer 3 switches in enterprise or campus networks running legacy DVMRP multicast routing. Engineers can download the RADLAN-rlDvmrp-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RADLAN-rlDvmrp-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

Radlan-based Layer 3 switch

Monitoring Examples

An administrator would poll rlDvmrpEnable to confirm DVMRP is active, then check timer objects such as rlDvmrpProbeInterval, rlDvmrpNeighborTimeOutInterval, and rlDvmrpPruneLifetime to verify protocol timing configuration matches the network design. The rlDvmrpRouteDesignatedForwarderExtTable, indexed via rlDvmrpRouteDesignatedForwarderExtEntry, would be checked to confirm rlDvmrpRouteDesignatedForwarder reflects the expected upstream router for a multicast route; an unexpected forwarder change could reveal a topology change or a neighbor timeout event upstream.

What Can Be Monitored

DVMRP enable state
DVMRP timer intervals (probe/timeout/prune)
designated forwarder per multicast route
route report/expiration timing

Imported Objects

From DVMRP-STD-MIB

dvmrpRouteNextHopEntry	OBJECT-TYPE
dvmrpRouteNextHopIfIndex	OBJECT-TYPE
dvmrpRouteNextHopSource	OBJECT-TYPE
dvmrpRouteNextHopSourceMask	OBJECT-TYPE

From RADLAN-DEVICEPARAMS-MIB

rndErrorDesc	OBJECT-TYPE
rndErrorSeverity	OBJECT-TYPE

From RADLAN-MIB

rnd	OBJECT-IDENTITY
rndNotifications	OBJECT-IDENTITY

From RADLAN-rlIPMulticast-MIB

rlIPmulticast

MODULE-IDENTITY

From SNMPv2-SMI

IpAddress
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
NTF rlDvmrpTableOverflow	1.3.6.1.4.1.89.0.155			A DVMRP Table overflows.
rlDvmrp	1.3.6.1.4.1.89.46.4			The private MIB module definition for IP Multicast DVMRP support in Radlan devices.
INT rlDvmrpMibVersion	1.3.6.1.4.1.89.46.4.2	INTEGER	read-only	MIB's version, the current version is 1.
INT rlDvmrpEnable	1.3.6.1.4.1.89.46.4.3	INTEGER	read-write	The enabled status of Dvmrp on this router.
INT rlDvmrpProbeInterval	1.3.6.1.4.1.89.46.4.4	INTEGER	read-write	The default interval at which periodic DVMRP Probe messages are to be sent.
INT rlDvmrpNeighborTimeOutInterval	1.3.6.1.4.1.89.46.4.5	INTEGER	read-write	The default interval, if expired the Neighbor need to be deleted from Interface.
INT rlDvmrpMinFlashUpdateInterval	1.3.6.1.4.1.89.46.4.6	INTEGER	read-write	The min interval at which the DVMRP Fash (Report msg) messages are to be sent.
INT rlDvmrpRouteReportInterval	1.3.6.1.4.1.89.46.4.7	INTEGER	read-write	The default interval at which periodic DVMRP Report messages are to be sent.
INT rlDvmrpRouteExpirationTime	1.3.6.1.4.1.89.46.4.8	INTEGER	read-write	The default interval at which route expired.
INT rlDvmrpPruneLifetime	1.3.6.1.4.1.89.46.4.9	INTEGER	read-write	The default value of prune interval to be send upstream.
rlDvmrpRouteDesignatedForwarderExtTable	1.3.6.1.4.1.89.46.4.10		not-accessible	The (conceptual) table listing the designated forwarder for each source mask and interface.
rlDvmrpRouteDesignatedForwarderExtEntry	1.3.6.1.4.1.89.46.4.10.1		not-accessible	An entry (conceptual row) in the rlDvmrpRouteDesignatedForwarderExtTable. Specifies the designated forwarder for this source mask and interface.
IP rlDvmrpRouteDesignatedForwarder	1.3.6.1.4.1.89.46.4.10.1.1	IpAddress	read-only	The address of the designated forwarder for the specific Source Mask and Interface.

RFC description

Manages DVMRP IP multicast routing protocol support in Radlan network devices.

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Download RADLAN-rlDvmrp-MIB

What Is RADLAN-rlDvmrp-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description