Monitoring DVMRP Neighbors

Purpose

Display information about DVMRP neighbors. Specify the brief keyword to view a summary of information.

Action

To display information about DVMRP neighbors:

host1:boston# show ip dvmrp neighbor
Neighbor Address:                   14.0.0.1
      Interface:                    atm5/0.14
      Neighbor upTime:                28
      Neighbor Major Version:          3
      Neighbor Minor Version:        255
      Neighbor Capabilities:  Prune  GenerationId  Mtrace  NetMask
      Neighbor State:             Active
      Geneneration ID:        0x3a13fbc2
      Routes Received:                 1
      Bad Routes Received              0
      Bad Packets Received:            0

To display a summary of information about DVMRP neighbors:

host1:v3#show ip dvmrp neighbor brief
  Interface          NbrAddress      UpTime Maj Min Cap   State
  atm5/0.14          14.0.0.1            32   3 255 PGMN  Active
  atm5/0.15          15.0.0.1            34   3 255 PGMN  Active

Meaning

Table 46 lists the show ip dvmrp neighbor command output fields.

Table 46: show ip dvmrp neighbor Output Fields

Field	Description
Neighbor Address/NbrAddress	IP address of the neighbor
Interface	Interface type and specifier, such as atm3/0. For details about interface types and specifiers, see Interface Types and Specifiers in JunosE Command Reference Guide.
Neighbor upTime/UpTime	Length of time, in seconds, that this router has been a neighbor
Neighbor Major Version/Maj	Major number of the DVMRP version on the neighbor
Neighbor Minor Version/Min	Minor number of the DVMRP version on the neighbor
Neighbor Capabilities/Cap	Capability of the neighbor
Prune/P	Ability to send prune messages
GenerationId/G	Ability to create a generation ID number
Mtrace/M	Ability to trace multicast routes
Netmask/N	Ability to send prunes and grafts with a network mask address
Neighbor State/State	Status of communications with the neighbor
Active	Router is able to communicate with this neighbor
Down	Neighbor is down
Ignoring	Router is not accepting messages from this neighbor
Oneway	Router is receiving messages from the neighbor, but the neighbor does not include the router's IP address in the messages. This state can indicate a starting transition, or a problem.
Generation ID	Number that the neighbor generates each time it boots; when the number changes, the VR discards all information previously learned from the router.
Routes Received	Number of routes received from this neighbor
Bad Routes Received	Number of bad routes received from this neighbor
Bad Packets Received	Number of bad packets received from this neighbor

Monitoring DVMRP Neighbors

Purpose

Action

Meaning

Related Documentation