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Junos CLI Reference
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show pim mdt

date_range 19-Nov-23

Syntax

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show pim mdt instance instance-name
<brief | detail | extensive>
data-mdt-joins
data-mdt-limit
inet
inet6
<incoming | outgoing>
<logical-system (all | logical-system-name)>
<range>

Description

Display information about Protocol Independent Multicast (PIM) default multicast distribution tree (MDT) and the data MDTs in a Layer 3 VPN environment for a routing instance.

Options

instance  instance-name

Display information about data-MDTs for a specific PIM-enabled routing instance.

brief | detail | extensive

(Optional) Display the specified level of output.

data-mdt-joins

Show received PIM data-mdt-joins.

data-mdt-limits

Show received PIM data-mdt-limits.

incoming | outgoing

(Optional) Display incoming or outgoing multicast data tunnels, respectively.

inet | inet6

Display IPv4 or IPv6 multicast data tunnels.

logical-system (all | logical-system-name)

(Optional) Perform this operation on all logical systems or on a particular logical system.

range

(Optional) Display information about an IP address with optional prefix length representing a particular multicast group.

Required Privilege Level

view

Output Fields

Table 1 describes the output fields for the show pim mdt command. Output fields are listed in the approximate order in which they appear.

Table 1: show pim mdt Output Fields

Field Name

Field Description

Level of Output

Instance

Name of the routing instance.

All levels

Tunnel direction

Direction the tunnel faces, from the router's perspective: Outgoing  or Incoming.

All levels

Tunnel mode

Mode the tunnel is operating in: PIM-SSM  or PIM-ASM.

All levels

Default group address

Default multicast group address using this tunnel.

All levels

Default source address

Default multicast source address using this tunnel.

All levels

Default tunnel interface

Default multicast tunnel interface.

All levels

Default tunnel source

Address used as the source address for outgoing PIM control messages.

All levels

C-Group

Customer-facing multicast group address using this tunnel. If you enable dynamic reuse of data MDT group addresses, more than one group address can use the same data MDT.

detail

C-Source

IP address of the multicast source in the customer's address space. If you enable dynamic reuse of data MDT group addresses, more than one source address can use the same data MDT.

detail

P-Group

Service provider-facing multicast group address using this tunnel.

detail

Data tunnel interface

Multicast data tunnel interface that set up the data-MDT tunnel.

detail

Last known forwarding rate

Last known rate, in kilobits per second, at which the tunnel was forwarding traffic.

detail

Configured threshold rate

Rate, in kilobits per second, above which a data-MDT tunnel is created and below which it is deleted.

detail

Tunnel uptime

Time that this data-MDT tunnel has existed. The format is hours:minutes:seconds.

detail

Sample Output

show pim mdt <variables> instance

Use this command to display MDT information for default MDT and data-MDT for IPv4 and/or IPv6 traffic. )

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user@host> show pim mdt inet | inet6 instance VPN-A   
Instance: PIM.VPN-A  Family: INET
Tunnel direction: Outgoing
Tunnel mode: PIM-SM
Default group address: 224.1.1.1
Default source address: 0.0.0.0
Default tunnel interface: mt-0/0/0.32768
Default tunnel source: 0.0.0.0

C-group address   C-source address   P-group address    Data tunnel interface
227.1.1.1         18.1.1.2           228.1.1.1          mt-0/0/0.32769

Instance: PIM.VPN-A
Tunnel direction: Incoming
Tunnel mode: PIM-SM
Default group address: 224.1.1.1
Default source address: 0.0.0.0
Default tunnel interface: mt-0/0/0.1081344
Default tunnel source: 0.0.0.0

Instance: PIM.VPN-A Family: INET6

show pim mdt instance detail

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user@host> show pim mdt instance VPN-A detail   
Instance: PIM.VPN-A
Tunnel direction: Outgoing
Default group address: 239.1.1.1
Default tunnel interface: mt-1/1/0.32768
Default tunnel source: 192.168.7.1

C-Group: 235.1.1.2
    C-Source: 192.168.195.74
    P-Group : 228.0.0.0
    Data tunnel interface      : mt-1/1/0.32769
    Last known forwarding rate : 48 kbps (6 kBps)
    Configured threshold rate  : 10 kbps
    Tunnel uptime              : 00:00:34

Instance: PIM.VPN-A
Tunnel direction: Incoming
Default group address: 239.1.1.1
Default tunnel interface: mt-1/1/0.1081344

show pim mdt instance extensive

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user@host> show pim mdt instance VPN-A extensive   
Instance: PIM.VPN-A
Tunnel direction: Outgoing
Default group address: 239.1.1.1
Default tunnel interface: mt-1/1/0.32768
Default tunnel source: 192.168.7.1

C-Group: 235.1.1.2
    C-Source: 192.168.195.74
    P-Group : 228.0.0.0
    Data tunnel interface      : mt-1/1/0.32769
    Last known forwarding rate : 48 kbps (6 kBps)
    Configured threshold rate  : 10 kbps
    Tunnel uptime              : 00:00:41

Instance: PIM.VPN-A
Tunnel direction: Incoming
Default group address: 239.1.1.1
Default tunnel interface: mt-1/1/0.1081344

show pim mdt instance incoming

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user@host> show pim mdt instance VPN-A incoming   
Instance: PIM.VPN-A
Tunnel direction: Incoming
Default group address: 239.1.1.1
Default tunnel interface: mt-1/1/0.1081344

show pim mdt instance outgoing

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user@host> show pim mdt instance VPN-A outgoing   
Instance: PIM.VPN-A
Tunnel direction: Outgoing
Default group address: 239.1.1.1
Default tunnel interface: mt-1/1/0.32768
Default tunnel source: 192.168.7.1

C-group address   C-source address   P-group address    Data tunnel interface
235.1.1.2         192.168.195.74     228.0.0.0          mt-1/1/0.32769

show pim mdt instance (SSM Mode)

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user@host> show pim mdt instance vpn-a   
Instance: PIM.vpn-a
Tunnel direction: Outgoing
Tunnel mode: PIM-SSM
Default group address: 232.1.1.1      
Default source address: 10.255.14.216
Default tunnel interface: mt-1/3/0.32769 
Default tunnel source: 192.168.7.1

Instance: PIM.vpn-a
Tunnel direction: Incoming
Tunnel mode: PIM-SSM
Default group address: 232.1.1.1      
Default source address: 10.255.14.217  
Default tunnel interface: mt-1/3/0.1081345 

Instance: PIM.vpn-a
Tunnel direction: Incoming
Tunnel mode: PIM-SSM
Default group address: 232.1.1.1      
Default source address: 10.255.14.218  
Default tunnel interface: mt-1/3/0.1081345

Release Information

Command introduced before Junos OS Release 7.4.

Support for IPv6 added in Junos OS Release 17.3R1.

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