This section describes the Distance Vector Multicast Routing Protocol (DVMRP) commands.
ip dvmrp
This command sets administrative mode of DVMRP in the router to active.
Default: disabled
Format: ip dvmrp
Mode: Global Config
no ip dvmrp
This command sets administrative mode of DVMRP in the router to inactive.
Format: no ip dvmrp
Mode: Global Config
ip dvmrp metric
This command configures the metric for an interface or range of interfaces. This value is used in the DVMRP messages as the cost to reach this network. This field has a range of 1 to 31.
Default: 1
Format: ip dvmrp metric metric
Mode: Interface Config
no ip dvmrp metric
This command resets the metric for an interface to the default value. This value is used in the DVMRP messages as the cost to reach this network.
Format: no ip dvmrp metric
Mode: Interface Config
ip dvmrp trapflags
This command enables the DVMRP trap mode.
Default: disabled
Format: ip dvmrp trapflags
Mode: Global Config
no ip dvmrp trapflags
This command disables the DVMRP trap mode.
Format: no ip dvmrp trapflags
Mode: Global Config
ip dvmrp
This command sets the administrative mode of DVMRP on an interface or range of interfaces to active.
Default: disabled
Format: ip dvmrp
Mode: Interface Config
no ip dvmrp
This command sets the administrative mode of DVMRP on an interface to inactive.
Format: no ip dvmrp
Mode: Interface Config
show ip dvmrp
This command displays the system-wide information for DVMRP.
Format: show ip dvmrp
Modes: Privileged EXEC\User EXEC
Admin Mode: Indicates whether DVMRP is enabled or disabled.
Version String: The version of DVMRP being used.
Number of Routes: The number of routes in the DVMRP routing table.
Reachable Routes: The number of entries in the routing table with non-infinite metrics.
Interface: unit/slot/port
Interface Mode: The mode of this interface. Possible values are Enabled and Disabled.
State: The current state of DVMRP on this interface. Possible values are Operational or Non-Operational.
show ip dvmrp interface
This command displays the interface information for DVMRP on the specified interface.
Format: show ip dvmrp interface unit/slot/port
Modes: Privileged EXEC\User EXEC
Interface Mode: Indicates whether DVMRP is enabled or disabled on the specified interface.
Metric: The metric of this interface. This is a configured value.
Local Address: The IP address of the interface.
Generation ID: The Generation ID value for the interface. This is used by the neighboring routers to detect that the DVMRP table should be resent.
Received Bad Packets: The number of invalid packets received.
Received Bad Routes: The number of invalid routes received.
Sent Routes: The number of routes that have been sent on this interface.
show ip dvmrp neighbor
This command displays the neighbor information for DVMRP.
Format: show ip dvmrp neighbor
Modes: Privileged EXEC\User EXEC
IfIndex: The value of the interface used to reach the neighbor.
Nbr IP Addr: The IP address of the DVMRP neighbor for which this entry contains information.
State: The state of the neighboring router. The possible value for this field are ACTIVE or DOWN.
Up Time: The time since this neighboring router was learned.
Expiry Time: The time remaining for the neighbor to age out. This field is not applicable if the State is DOWN.
Generation ID: The Generation ID value for the neighbor.
Major Version: The major version of DVMRP protocol of neighbor.
Minor Version: The minor version of DVMRP protocol of neighbor.
Capabilities: The capabilities of neighbor.
Received Routes: The number of routes received from the neighbor.
Rcvd Bad Pkts: The number of invalid packets received from this neighbor.
Rcvd Bad Routes: The number of correct packets received with invalid routes.
show ip dvmrp nexthop
This command displays the next hop information on outgoing interfaces for routing multicast datagrams.
Format: show ip dvmrp nexthop
Modes: Privileged EXEC\User EXEC
Source IP: The sources for which this entry specifies a next hop on an outgoing interface.
Source Mask: The IP Mask for the sources for which this entry specifies a next hop on an outgoing interface.
Next Hop Interface: The interface in unit/slot/port format for the outgoing interface for this next hop.
Type: The network is a LEAF or a BRANCH.
show ip dvmrp prune
This command displays the table listing the router’s upstream prune information.
Format: show ip dvmrp prune
Modes: Privileged EXEC\User EXEC
Group IP: The multicast Address that is pruned.
Source IP: The IP address of the source that has pruned.
Source Mask: The network Mask for the prune source. It should be all 1s or both the prune source and prune mask must match.
Expiry Time (secs): The expiry time in seconds. This is the time remaining for this prune to age out.
show ip dvmrp route
This command displays the multicast routing information for DVMRP.
Format: show ip dvmrp route
Modes: Privileged EXEC\User EXEC
Source Address: The multicast address of the source group.
Source Mask: The IP Mask for the source group.
Upstream Neighbor: The IP address of the neighbor which is the source for the packets for a specified multicast address.
Interface: The interface used to receive the packets sent by the sources.
Metric: The distance in hops to the source subnet. This field has a different meaning than the Interface Metric field.
Expiry Time (secs): The expiry time in seconds, which is the time left for this route to age out.
Up Time (secs): The time when a specified route was learnt, in seconds.
