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show virtual-chassis active-topology (MX Series Virtual Chassis)



Display information about neighbor reachability from each member router in an MX Series Virtual Chassis configuration. You can issue the show virtual-chassis active-topology command from the console of either member router in the Virtual Chassis.



(Optional) Display neighbor reachability information for both member routers in a Virtual Chassis configuration. This is the default behavior if no options are specified.


(Optional) Display neighbor reachability information for the member router on which you are issuing the command.

member member-id

(Optional) Display neighbor reachability information for the specified Virtual Chassis member router. Replace member-id with the value 0 or 1.

Required Privilege Level


Output Fields

Table 1 lists the output fields for the show virtual-chassis active-topology command. Output fields are listed in the approximate order in which they appear.

Table 1: show virtual-chassis active-topology Output Fields

Field Name

Field Description


Member ID of the Virtual Chassis member router for which output is displayed.

Destination ID

Member ID of the destination (neighbor) router.


Member ID and Virtual Chassis port interface (in the format vcp-slot/pic/port.logical-unit-number) of the next-hop to which the router forwards packets for the destination ID.

Sample Output

show virtual-chassis active-topology all-members

show virtual-chassis active-topology local

show virtual-chassis active-topology member 1

Release Information

Command introduced in Junos OS Release 11.2.