display multicast ipv6 rpf-info

Function

The display multicast ipv6 rpf-info command displays Reverse Path Forwarding (RPF) routing information of an IPv6 source or an IPv6 source group, including currently used topology name and information about all routes.

Format

display multicast ipv6 rpf-info ipv6-source-address [ ipv6-group-address ] [ rpt | spt ] [ verbose ]

display multicast ipv6 { vpn-instance instance-name | all-instance } rpf-info ipv6-source-address [ ipv6-group-address ] [ rpt | spt ] [ verbose ]

Parameters

Parameter	Description	Value
ipv6-source-address	Specifies the IPv6 address of a multicast source. If this parameter is specified, RPF routing information of this multicast source is displayed.	The address is in the format of X:X:X:X:X:X:X:X.
ipv6-group-address	Specifies the IPv6 address of a multicast group. If this parameter is specified, RPF routing information of this source group is displayed.	The address ranges from FF00::0 to FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF.
rpt	Display the information of rendezvous point tree (RPT).	-
spt	Display the information of shortest path tree (SPT).	-
verbose	Displays detailed RPF information.	-
vpn-instance instance-name	Specifies the name of a VPN instance.	The value is a string of 1 to 31 case-sensitive characters, spaces not supported. In addition, the VPN instance name must not be _public_. When double quotation marks are used around the string, spaces are allowed in the string.
all-instance	Specifies all VPN instance.	-

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
pim	read

Usage Guidelines

Usage Scenario

An RPF route is an optimal route with the destination address being source-address and selected from the unicast routing table and static multicast routing table.

To display the RPF routing information of a specified multicast source, such as the information about the multicast source, status of the RPF interface, RPF neighbor, and routing information, run the display multicast ipv6 rpf-info command.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display detailed information about the RPF route to source 2001:db8:1::.

<HUAWEI> display multicast ipv6 rpf-info 2001:db8:1:: verbose
VPN-Instance: public net
 RPF information about source: 2001:db8:1::
     RPF used topology: default
     RPF interface: GigabitEthernet0/1/1, RPF neighbor: FE80:4000::7 
     Referenced route/mask: 2001:db8:1::/64                                           
     Referenced route type: unicast
     Load splitting rule: balance-preferred                                     
 Total route information about source 2001:db8:1::
 1. Referenced interface: GigabitEthernet0/1/0
    Referenced route/mask: 2001:db8:1::/64
    Referenced route type: unicast
    Referenced route preference: 15
    Referenced route cost: 20
    Referenced route nexthop: FE80:3000::7   
 2. Referenced interface: GigabitEthernet0/1/1.1
    Referenced route/mask: 2001:db8:1::/64 
    Referenced route type: unicast
    Referenced route preference: 15
    Referenced route cost: 20
    Referenced route nexthop: FE80::2E0:CBFF:FE53:8242
 3. Referenced interface: GigabitEthernet0/1/1
    Referenced route/mask: 2001:db8:1::/64
    Referenced route type: unicast
    Referenced route preference: 15
    Referenced route cost: 20
    Referenced route nexthop: FE80:4000::7

# Display information about the RPF route to multicast source 2001:db8:1::1.

<HUAWEI> display multicast ipv6 rpf-info 2001:db8:1::1
VPN-Instance: public net
RPF information about source: 2001:db8:1::1
RPF interface: GigabitEthernet0/1/1
Referenced route/mask: 2001:db8:1::/64
Referenced route type: unicast
Load splitting rule: disable

# Display detailed information about the RPF route to source 2001::A6E:216.

<HUAWEI> display multicast ipv6 all-instance rpf-info 2001::A6E:216 verbose
 VPN-Instance: vpn1
 RPF information about source: 2001::A6E:216
     RPF used topology: default
     RPF interface: pseudo, RPF neighbor: 2001::1:1:1:20
     Referenced route/mask: 2001::A6E:216/128
     Referenced route type: bgp
     Route selection rule: preference-preferred
     Load splitting rule: disable
     VRF Route Import Extended Community : <2001::1:1:1:20 . 1>
     Source AS Extended Community : 100
     Backup RPF used topology: default
     Backup RPF interface: pseudo, RPF neighbor: 2001::1:1:1:30
     Backup VRF Route Import Extended Community : <2001::1:1:1:30 . 1>
     Backup Source AS Extended Community : 100
 Total route information about source 2001::A6E:216
 1  .Referenced interface: 
     Referenced route/mask: 2001::A6E:216/128
     Referenced route type: bgp
     Referenced route preference: 255
     Referenced route cost: 3
     Referenced route nexthop: 2001::1:1:1:20

**Table 1** Description of the **display multicast ipv6 rpf-info** command output
Item	Description
RPF information about source	Multicast source to which RPF information belongs.
RPF interface	RPF interface.
RPF used topology	Topology used by the RPF route.
RPF neighbor	RPF neighbor.
Referenced route/mask	Referenced route and its mask.
Referenced route type	Referenced route type: unicast: unicast route. MBGP: Multicast Border Gateway Protocol (MBGP) route. mstatic: static multicast routes. MIGP: Multicast Interior Gateway Protocol (MIGP) route.
Referenced interface	Outbound interface of a route.
Referenced route preference	Priority.
Referenced route cost	Route cost.
Referenced route nexthop	Next hop.
Load splitting rule	Multicast load splitting rules: disable: Multicast load splitting is disabled. stable-preferred: stable-preferred load splitting. source: source address-based load splitting. group: group address-based load splitting. source-group: source and group addresses-based load splitting.
Total route information about source 2001:db8:1::	RPF routes to source 2001:db8:1::.
Route selection rule	RPF route selection rule. preference-preferred indicates that routes are selected based on the preferences of routing protocols.
VRF Route Import Extended Community	VRF Route Import Extended Community attribute in the MVPN extended community attributes.
Source AS Extended Community	Source AS Extended Community attribute in the MVPN extended community attributes.
Backup RPF interface	Backup RPF interface.
Backup VRF Route Import Extended Community	VRF Route Import Extended Community attribute in the backup route.
Backup Source AS Extended Community	Source AS Extended Community attribute in the backup route.
Backup RPF used topology	Topology used by the backup RPF route.
VPN-Instance	VPN instance to which RPF routing information belongs.