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Home Documentation Junos OS Junos CLI Reference CLI Reference S

Junos CLI Reference

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Junos CLI Reference
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show multicast snooping next-hops

date_range 19-Nov-23
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Syntax

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show multicast snooping next-hops 
<brief | detail>
<identifier next-hop-ID>
<inet>
<inet6>
<logical-system logical-system-name>

Description

Display information about the IP multicast snooping next-hops.

Options

brief | detail

(Optional) Display the specified level of output.

inet

(Optional) Display information for IPv4 multicast next hops only. If a family is not specified, both IPv4 and IPv6 results will be shown.

inet6

(Optional) Display information for IPv6 multicast next hops only. If a family is not specified, both IPv4 and IPv6 results will be shown.

logical-system logical-system-name

(Optional) Display information about a particular logical system, or type ’all’.

Required Privilege Level

view

Output Fields

Table 1 describes the output fields for the show multicast snooping next-hops command. Output fields are listed in the approximate order in which they appear.

Table 1: show multicast snooping next-hops Output Fields

Field Name

Field Description

Family

Protocol family for which multicast snooping next hops are displayed: INET or INET6.

Refcount

Number of cache entries that are using this next hop.

KRefcount

Kernel reference count for the next hop.

Downstream interface

Interface names associated with each multicast next-hop ID.

Nexthop Id

Identifier for the next-hop.

Note:

To see the next-hop ID for a given PE mesh group, igmp-snooping must be enabled for the relevant VPLS routing instance. (Junos OS creates a default CE and VE mesh groups for each VPLS routing instance. The next hop of the VE mesh group is the set of VE mesh-group interfaces of the remaining PEs in the same VPLS routing instance.)

Sample Output

show multicast snooping next-hops

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user@host> show multicast snooping next-hops  
Family: INET
ID          Refcount KRefcount Downstream interface Nexthop Id
1048574            4         1 ge-0/1/0.1000
                               ge-0/1/2.1000
                               ge-0/1/3.1000

1048574            4         1 ge-0/1/0.1000-(2000)
                               1048575
                               1048576 

1048575            2         0 ge-0/1/2.1000-(2001)
                               ge-0/1/3.1000-(2002)

1048576            2         0 lsi.1048578-(2003)
                               lsi.1048579-(2004)

show multicast snooping next-hops (IGMP snooping enabled on a VPLS)

In thIS example, ID 1048585 is the VE next-hop ID created for the VE next hop that is holding VE interfaces for the routing instance. It only appears if igmp snooping is enabled on the VPLS.

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user@host> show multicast snooping next-hops  
Family: INET
ID          Refcount KRefcount Downstream interface Addr
1048588            2         1 1048585
1048589            2         1 1048585
                               ge-0/0/5.100
0                  2         0 ge-0/0/0.100
                               ge-0/0/1.100
1048583            2         1 local
1048587            2         1 local
                               1048585
1048586            4         2 local
                               1048585
                               ge-0/0/5.100
1048584            2         1 local
                               ge-0/0/5.100
1048582            6         2 ge-0/0/5.100
0                  2         0 ge-0/0/0.200
                               ge-0/0/2.200
0                  2         0 ge-0/0/0.300
                               ge-0/0/2.300
0                  1         0 vt-0/0/10.17825792
                               vt-0/0/10.17825793
0                  1         0 vt-0/0/10.1048576
                               vt-0/0/10.1048578
1048585            5         0 vt-0/0/10.1048577
                               vt-0/0/10.1048579
0                  1         0 vt-0/0/10.34603008
                               vt-0/0/10.34603009

Release Information

Command introduced in Junos OS Release 11.2.

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