HIRSCHMANN-DVMRP-MIB

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Organization: Hirschmann Automation and Control GmbH

Last Updated: 2010-04-12

Category: Protocol: DVMRP, Routing Protocols, Technology: Multicast, Vendor: Belden

Description: Hirschmann vendor MIB for Distance Vector Multicast Routing Protocol (DVMRP) configuration on Hirschmann devices.

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What Is HIRSCHMANN-DVMRP-MIB?

HIRSCHMANN-DVMRP-MIB is a Hirschmann-specific enterprise MIB that manages the Distance Vector Multicast Routing Protocol (DVMRP) implementation running on Hirschmann's managed "Platform" switches and routers. It exposes multicast-routing configuration and operational data, including protocol version/generation identifiers, route counts, timers, and a per-interface table of DVMRP-enabled ports. While its primary purpose is multicast routing rather than general hardware health, it does support monitoring software/protocol status such as the DVMRP version string, route-table size, and per-interface administrative/operational status, which helps confirm the multicast routing process is running correctly. As a DVMRP-specific module it depends on the underlying ifIndex convention from the standard IF-MIB (referenced via hmDVMRPInterfaceIfIndex) and complements Hirschmann's broader private MIB tree. It is deployed on Hirschmann industrial Ethernet switches and routers that support multicast routing in industrial or metro network environments. Engineers can download the HIRSCHMANN-DVMRP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in HIRSCHMANN-DVMRP-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

Hirschmann managed industrial Ethernet switches/routers

Monitoring Examples

An administrator can poll hmDVMRPNumRoutes and hmDVMRPReachableRoutes to confirm the multicast routing table is populated and stable, and check hmDVMRPGenerationId to detect unexpected DVMRP process restarts. Walking hmDVMRPInterfaceTable (keyed by hmDVMRPInterfaceIfIndex) reveals per-interface hmDVMRPInterfaceStatus and hmDVMRPInterfaceMetric, letting an operator spot an interface that has dropped out of the DVMRP topology or is reporting an unexpected route metric. A sudden drop in hmDVMRPReachableRoutes combined with an incrementing hmDVMRPGenerationId would indicate the DVMRP process on that Hirschmann switch recently reinitialized, prompting further investigation.

What Can Be Monitored

DVMRP version and generation ID
number of DVMRP routes
reachable route count
per-interface DVMRP status
DVMRP update interval and prune lifetime

Imported Objects

From HIRSCHMANN-MULTICAST-MIB

hmPlatform4Multicast

MODULE-IDENTITY

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

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

From SNMPv2-TC

DisplayString
RowStatus

How to Use in IPNetwork Monitor

Example using hmDVMRPInterfaceRcvBadPkts OID:

Select a Hirschmann managed industrial Ethernet switch/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 hmDVMRPInterfaceRcvBadPkts 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 DVMRP messages received on the interface by the DVMRP process which were subsequently discarded as invalid (e.g. invalid packet format, or a route report from an unknown neighbor). 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 Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
hmDVMRPMIB	1.3.6.1.4.1.248.15.4.100			The Hirschmann Private DVMRP MIB definitions for Platform devices.
hmDVMRPMIBObjects	1.3.6.1.4.1.248.15.4.100.1
hmDVMRP	1.3.6.1.4.1.248.15.4.100.1.1
hmDVMRPScalar	1.3.6.1.4.1.248.15.4.100.1.1.1
STR hmDVMRPVersionString	1.3.6.1.4.1.248.15.4.100.1.1.1.1	DisplayString	read-only	The router's DVMRP version information. Similar to sysDescr in MIB-II, this is a free-form field which can be used to display vendor-specific information.
I32 hmDVMRPGenerationId	1.3.6.1.4.1.248.15.4.100.1.1.1.2	Integer32	read-only	The generation identifier for the routing process. This is used by neighboring routers to detect whether the DVMRP routing table should be resent.
G32 hmDVMRPNumRoutes	1.3.6.1.4.1.248.15.4.100.1.1.1.3	Gauge32	read-only	The number of entries in the routing table. This can be used to monitor the routing table size to detect illegal advertisements of unicast routes.
G32 hmDVMRPReachableRoutes	1.3.6.1.4.1.248.15.4.100.1.1.1.4	Gauge32	read-only	The number of entries in the routing table with non infinite metrics. This can be used to detect network partitions by observing the ratio of reachable routes to total routes.
I32 hmDVMRPUpdateInterval	1.3.6.1.4.1.248.15.4.100.1.1.1.10	Integer32	read-write	The interval at which the dvmrp route updates (reports) are sent.
I32 hmDVMRPPruneLifetime	1.3.6.1.4.1.248.15.4.100.1.1.1.11	Integer32	read-write	The time a prune message sent from this router will be valid.
hmDVMRPInterfaceTable	1.3.6.1.4.1.248.15.4.100.1.1.2		not-accessible	The (conceptual) table listing the router's multicast- capable interfaces.
hmDVMRPInterfaceEntry	1.3.6.1.4.1.248.15.4.100.1.1.2.1		not-accessible	An entry (conceptual row) in the hmDVMRPInterfaceTable. This row augments ipMRouteInterfaceEntry in the IP Multicast MIB, where the threshold object resides.
NUM hmDVMRPInterfaceIfIndex	1.3.6.1.4.1.248.15.4.100.1.1.2.1.1	InterfaceIndex	not-accessible	The ifIndex value of the interface for which DVMRP is enabled.
IP hmDVMRPInterfaceLocalAddress	1.3.6.1.4.1.248.15.4.100.1.1.2.1.2	IpAddress	read-only	The IP address this system will use as a source address on this interface. On unnumbered interfaces, it must be the same value as hmDVMRPInterfaceLocalAddress for some interface on the system.
I32 hmDVMRPInterfaceMetric	1.3.6.1.4.1.248.15.4.100.1.1.2.1.3	Integer32	read-create	The distance metric for this interface which is used to calculate distance vectors.
INT hmDVMRPInterfaceStatus	1.3.6.1.4.1.248.15.4.100.1.1.2.1.4	INTEGER	read-create	The status of this entry. Creating the entry enables DVMRP on the interface; destroying the entry disables DVMRP on the interface.
C32 hmDVMRPInterfaceRcvBadPktsEx	1.3.6.1.4.1.248.15.4.100.1.1.2.1.5	Counter32	read-only	The number of DVMRP messages received on the interface by the DVMRP process which were subsequently discarded as invalid (e.g. invalid packet format, or a route report from an unknown neighbor).
C32 hmDVMRPInterfaceRcvBadRoutes	1.3.6.1.4.1.248.15.4.100.1.1.2.1.6	Counter32	read-only	The number of routes, in valid DVMRP packets, which were ignored because the entry was invalid.
C32 hmDVMRPInterfaceSentRoutes	1.3.6.1.4.1.248.15.4.100.1.1.2.1.7	Counter32	read-only	The number of routes, in DVMRP Report packets, which have been sent on this interface. Together with hmDVMRPNeighborRcvRoutes at a peer, this object is useful for detecting routes being lost.
STR hmDVMRPInterfaceInterfaceKey	1.3.6.1.4.1.248.15.4.100.1.1.2.1.8	SnmpAdminString	read-create	The (shared) key for authenticating neighbors on this interface. This object is intended solely for the purpose of setting the interface key, and MUST be accessible only via requests using both authentication and privacy. The agent MAY report an empty string in response to get, get- next, get-bulk requests.
I32 hmDVMRPInterfaceInterfaceKeyVersion	1.3.6.1.4.1.248.15.4.100.1.1.2.1.9	Integer32	read-create	The highest version number of all known interface keys for this interface used for authenticating neighbors.
U32 hmDVMRPInterfaceGenerationId	1.3.6.1.4.1.248.15.4.100.1.1.2.1.20	Unsigned32	read-only	The generation identifier for the routing process. This is used by neighboring routers to detect whether the DVMRP routing table should be resent.
hmDVMRPNeighborTable	1.3.6.1.4.1.248.15.4.100.1.1.3		not-accessible	The (conceptual) table listing the router's DVMRP neighbors, as discovered by receiving DVMRP messages.
hmDVMRPNeighborEntry	1.3.6.1.4.1.248.15.4.100.1.1.3.1		not-accessible	An entry (conceptual row) in the hmDVMRPNeighborTable.
NUM hmDVMRPNeighborIfIndex	1.3.6.1.4.1.248.15.4.100.1.1.3.1.1	InterfaceIndex	not-accessible	The value of ifIndex for the virtual interface used to reach this DVMRP neighbor.
IP hmDVMRPNeighborAddress	1.3.6.1.4.1.248.15.4.100.1.1.3.1.2	IpAddress	not-accessible	The IP address of the DVMRP neighbor for which this entry contains information.
TIK hmDVMRPNeighborUpTime	1.3.6.1.4.1.248.15.4.100.1.1.3.1.3	TimeTicks	read-only	The time since this DVMRP neighbor (last) became a neighbor of the local router.
TIK hmDVMRPNeighborExpiryTime	1.3.6.1.4.1.248.15.4.100.1.1.3.1.4	TimeTicks	read-only	The minimum time remaining before this DVMRP neighbor will be aged out.
I32 hmDVMRPNeighborGenerationId	1.3.6.1.4.1.248.15.4.100.1.1.3.1.5	Integer32	read-only	The neighboring router's generation identifier.
I32 hmDVMRPNeighborMajorVersion	1.3.6.1.4.1.248.15.4.100.1.1.3.1.6	Integer32	read-only	The neighboring router's major DVMRP version number.
I32 hmDVMRPNeighborMinorVersion	1.3.6.1.4.1.248.15.4.100.1.1.3.1.7	Integer32	read-only	The neighboring router's minor DVMRP version number.
BIT hmDVMRPNeighborCapabilities	1.3.6.1.4.1.248.15.4.100.1.1.3.1.8	Bits	read-only	This object describes the neighboring router's capabilities. The leaf bit indicates that the neighbor has only one interface with neighbors. The prune bit indicates that the neighbor supports pruning. The generationID bit indicates that the neighbor sends its generationID in Probe messages. The mtrace bit indicates that the neighbor can handle mtrace requests.
C32 hmDVMRPNeighborRcvRoutes	1.3.6.1.4.1.248.15.4.100.1.1.3.1.9	Counter32	read-only	The total number of routes received in valid DVMRP packets received from this neighbor. This can be used to diagnose problems such as unicast route injection, as well as giving an indication of the level of DVMRP route exchange activity.
C32 hmDVMRPNeighborRcvBadPkts	1.3.6.1.4.1.248.15.4.100.1.1.3.1.10	Counter32	read-only	The number of packet received from this neighbor which were discarded as invalid.
C32 hmDVMRPNeighborRcvBadRoutes	1.3.6.1.4.1.248.15.4.100.1.1.3.1.11	Counter32	read-only	The number of routes, in valid DVMRP packets received from this neighbor, which were ignored because the entry was invalid.
INT hmDVMRPNeighborState	1.3.6.1.4.1.248.15.4.100.1.1.3.1.12	INTEGER	read-only	State of the neighbor adjacency.
hmDVMRPRouteTable	1.3.6.1.4.1.248.15.4.100.1.1.4		not-accessible	The table of routes learned through DVMRP route exchange.
hmDVMRPRouteEntry	1.3.6.1.4.1.248.15.4.100.1.1.4.1		not-accessible	An entry (conceptual row) containing the multicast routing information used by DVMRP in place of the unicast routing information.
IP hmDVMRPRouteSource	1.3.6.1.4.1.248.15.4.100.1.1.4.1.1	IpAddress	not-accessible	The network address which when combined with the corresponding value of hmDVMRPRouteSourceMask identifies the sources for which this entry contains multicast routing information.
IP hmDVMRPRouteSourceMask	1.3.6.1.4.1.248.15.4.100.1.1.4.1.2	IpAddress	not-accessible	The network mask which when combined with the corresponding value of hmDVMRPRouteSource identifies the sources for which this entry contains multicast routing information.
IP hmDVMRPRouteUpstreamNeighbor	1.3.6.1.4.1.248.15.4.100.1.1.4.1.3	IpAddress	read-only	The address of the upstream neighbor (e.g., RPF neighbor) from which IP datagrams from these sources are received.
NUM hmDVMRPRouteIfIndex	1.3.6.1.4.1.248.15.4.100.1.1.4.1.4	InterfaceIndexOrZero	read-only	The value of ifIndex for the interface on which IP datagrams sent by these sources are received. A value of 0 typically means the route is an aggregate for which no next- hop interface exists.
I32 hmDVMRPRouteMetric	1.3.6.1.4.1.248.15.4.100.1.1.4.1.5	Integer32	read-only	The distance in hops to the source subnet.
TIK hmDVMRPRouteExpiryTime	1.3.6.1.4.1.248.15.4.100.1.1.4.1.6	TimeTicks	read-only	The minimum amount of time remaining before this entry will be aged out.
TIK hmDVMRPRouteUpTime	1.3.6.1.4.1.248.15.4.100.1.1.4.1.7	TimeTicks	read-only	The time since the route represented by this entry was learned by the router.
hmDVMRPRouteNextHopTable	1.3.6.1.4.1.248.15.4.100.1.1.5		not-accessible	The (conceptual) table containing information on the next hops on outgoing interfaces for routing IP multicast datagrams.
hmDVMRPRouteNextHopEntry	1.3.6.1.4.1.248.15.4.100.1.1.5.1		not-accessible	An entry (conceptual row) in the list of next hops on outgoing interfaces to which IP multicast datagrams from particular sources are routed.
IP hmDVMRPRouteNextHopSource	1.3.6.1.4.1.248.15.4.100.1.1.5.1.1	IpAddress	not-accessible	The network address which when combined with the corresponding value of hmDVMRPRouteNextHopSourceMask identifies the sources for which this entry specifies a next hop on an outgoing interface.
IP hmDVMRPRouteNextHopSourceMask	1.3.6.1.4.1.248.15.4.100.1.1.5.1.2	IpAddress	not-accessible	The network mask which when combined with the corresponding value of hmDVMRPRouteNextHopSource identifies the sources for which this entry specifies a next hop on an outgoing interface.
NUM hmDVMRPRouteNextHopIfIndex	1.3.6.1.4.1.248.15.4.100.1.1.5.1.3	InterfaceIndex	not-accessible	The ifIndex value of the interface for the outgoing interface for this next hop.
INT hmDVMRPRouteNextHopType	1.3.6.1.4.1.248.15.4.100.1.1.5.1.4	INTEGER	read-only	Type is leaf if no downstream dependent neighbors exist on the outgoing virtual interface. Otherwise, type is branch.
hmDVMRPPruneTable	1.3.6.1.4.1.248.15.4.100.1.1.6		not-accessible	The (conceptual) table listing the router's upstream prune state.
hmDVMRPPruneEntry	1.3.6.1.4.1.248.15.4.100.1.1.6.1		not-accessible	An entry (conceptual row) in the hmDVMRPPruneTable.
IP hmDVMRPPruneGroup	1.3.6.1.4.1.248.15.4.100.1.1.6.1.1	IpAddress	not-accessible	The group address which has been pruned.
IP hmDVMRPPruneSource	1.3.6.1.4.1.248.15.4.100.1.1.6.1.2	IpAddress	not-accessible	The address of the source or source network which has been pruned.
IP hmDVMRPPruneSourceMask	1.3.6.1.4.1.248.15.4.100.1.1.6.1.3	IpAddress	not-accessible	The address of the source or source network which has been pruned. The mask must either be all 1's, or else hmDVMRPPruneSource and hmDVMRPPruneSourceMask must match hmDVMRPRouteSource and hmDVMRPRouteSourceMask for some entry in the hmDVMRPRouteTable.
TIK hmDVMRPPruneExpiryTime	1.3.6.1.4.1.248.15.4.100.1.1.6.1.4	TimeTicks	read-only	The amount of time remaining before this prune should expire at the upstream neighbor. This value should be the minimum of the default prune lifetime and the remaining prune lifetimes of the local router's downstream neighbors, if any.
hmDVMRPTraps	1.3.6.1.4.1.248.15.4.100.1.1.7
NTF hmDVMRPNeighborLoss	1.3.6.1.4.1.248.15.4.100.1.1.7.1			A hmDVMRPNeighborLoss trap signifies the loss of a 2-way adjacency with a neighbor. This trap should be generated when the neighbor state changes from active to one-way, ignoring, or down. The trap should be generated only if the router has no other neighbors on the same interface with a lower IP address than itself.
NTF hmDVMRPNeighborNotPruning	1.3.6.1.4.1.248.15.4.100.1.1.7.2			A hmDVMRPNeighborNotPruning trap signifies that a non-pruning neighbor has been detected (in an implementation-dependent manner). This trap should be generated at most once per generation ID of the neighbor. For example, it should be generated at the time a neighbor is first heard from if the prune bit is not set in its capabilities. It should also be generated if the local system has the ability to tell that a neighbor which sets the the prune bit in its capabilities is not pruning any branches over an extended period of time. The trap should be generated only if the router has no other neighbors on the same interface with a lower IP address than itself.
hmDVMRPMIBConformance	1.3.6.1.4.1.248.15.4.100.2
hmDVMRPMIBCompliances	1.3.6.1.4.1.248.15.4.100.2.1
hmDVMRPMIBCompliance	1.3.6.1.4.1.248.15.4.100.2.1.1			The compliance statement for the DVMRP MIB.
hmDVMRPMIBGroups	1.3.6.1.4.1.248.15.4.100.2.2
hmDVMRPGeneralGroup	1.3.6.1.4.1.248.15.4.100.2.2.2			A collection of objects used to describe general DVMRP configuration information.
hmDVMRPInterfaceGroup	1.3.6.1.4.1.248.15.4.100.2.2.3			A collection of objects used to describe DVMRP interface configuration and statistics.
hmDVMRPNeighborGroup	1.3.6.1.4.1.248.15.4.100.2.2.4			A collection of objects used to describe DVMRP peer configuration and statistics.
hmDVMRPRoutingGroup	1.3.6.1.4.1.248.15.4.100.2.2.5			A collection of objects used to store the DVMRP routing table.
hmDVMRPSecurityGroup	1.3.6.1.4.1.248.15.4.100.2.2.6			A collection of objects used to store information related to DVMRP security.
hmDVMRPTreeGroup	1.3.6.1.4.1.248.15.4.100.2.2.7			A collection of objects used to store information related to DVMRP prune state.
hmDVMRPNotificationGroup	1.3.6.1.4.1.248.15.4.100.2.2.8			A collection of notifications for signaling important DVMRP events.

RFC description

Distance Vector Multicast Routing Protocol (DVMRP) management for Hirschmann platform multicast networks.

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