display multicast rpf-info

Function

The display multicast rpf-info command displays the Reverse Path Forwarding (RPF) routes of a specified multicast source or source/group, including currently used topology name and information about all routes.

Format

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

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

Parameters

Parameter	Description	Value
vpn-instance vpn-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 instances.	-
source-address	Specifies the address of a multicast source, used to display the information of RPF routing corresponding to the source.	The address is in dotted decimal notation.
group-address	Specifies the multicast group address, used to display the information of RPF routing corresponding to the source/group.	The address is in dotted decimal notation and ranges from 224.0.0.0 to 239.255.255.255.
rpt	Display the information of rendezvous point tree (RPT).	-
spt	Display the information of shortest path tree (SPT).	-
verbose	Displays detailed RPF information.	-

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
pim	read

Usage Guidelines

Usage Scenario

The RPF route with the source-address as the destination address is an optimal route selected from unicast routes and multicast static routes.

The display multicast rpf-info command can be used to display the information about the RPF route to a specified multicast source, such as the information about the multicast source, status of the RPF interface, RPF neighbor, and route.

Precautions

If vpn-instance or all-instance is not specified, only information about the public network instance is displayed.

Example

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

# Display details about the RPF route to multicast source 8.8.8.8.

<HUAWEI> display multicast rpf-info 8.8.8.8 verbose
 VPN-Instance: public net
 RPF information about source: 8.8.8.8
     RPF used topology: default
     RPF interface: GigabitEthernet0/1/1, RPF neighbor: 3.3.3.2
     Referenced route/mask: 8.8.8.0/24
     Referenced route type: unicast
     Route selection rule: preference-preferred
     Load splitting rule: disable
     Backup RPF interface: GigabitEthernet0/1/2, backup RPF neighbor: 2.2.2.2
 Total route information about source 8.8.8.8
 1  .Referenced interface: GigabitEthernet0/1/1
     Referenced route/mask: 8.8.8.0/24
     Referenced route type: unicast
     Referenced route preference: 15
     Referenced route cost: 20
     Referenced route nexthop: 3.3.3.2
     Backup referenced route interface: GigabitEthernet0/1/2
     Backup referenced route nexthop: 2.2.2.2

# Display RPF routes in a scenario that has primary and backup routes after PIM FRR is configured.

<HUAWEI> display multicast rpf-info 8.8.8.8
 VPN-Instance: public net
 RPF information about source: 8.8.8.8
     RPF interface: GigabitEthernet0/1/1, RPF neighbor: 3.3.3.2
     Referenced route/mask: 8.8.8.0/24
     Referenced route type: unicast
     Route selection rule: preference-preferred
     Load splitting rule: disable
     Backup RPF interface: GigabitEthernet0/1/2, backup RPF neighbor: 2.2.2.2

# Display RPF routes of VPN BLUE with the source address 10.1.1.2 in VPN RED after an MVPN extranet is configured.

<HUAWEI> display multicast vpn-instance RED rpf-info 10.1.1.2 228.0.0.1
 VPN-Instance: RED
 RPF information about source 10.1.1.2 and group 228.0.0.1
     RPF interface: MCAST_Extranet
     RPF Source VPN-Instance: BLUE
     Referenced route/mask: 10.1.1.0/24
     Referenced route type: unicast
     Route selection rule: preference-preferred
     Load splitting rule: disable

# Display the RPF routes of the VPN instance VPNA on the receiver PE when a backup route exists after an NG MVPN is configured.

<HUAWEI> display multicast vpn-instance VPNA rpf-info 10.1.3.2
 VPN-Instance: VPNA
 RPF information about source: 10.1.3.2, frr is enabled
     RPF interface: pseudo, RPF neighbor: 2.2.2.2
     Referenced route/mask: 10.1.3.0/30
     Referenced route type: unicast
     Route selection rule: preference-preferred
     Load splitting rule: disable
     VRF Route Import Extended Community : 2.2.2.2:1
     Source AS Extended Community : 100
     Backup RPF interface: pseudo, backup RPF neighbor: 3.3.3.3
     Backup VRF Route Import Extended Community : 3.3.3.3:1
     Backup Source AS Extended Community : 100

# Display all the RPF routes to the source address 172.16.0.1 in the public network instance.

<HUAWEI> display multicast rpf-info 172.16.0.1
VPN-Instance: public net
 RPF information about source: 172.16.0.1
     RPF interface: GigabitEthernet0/1/0, RPF neighbor: 10.1.5.2
     Referenced route/mask: 172.16.0.0/24
     Referenced route type: unicast
     Route selection rule: preference-preferred
     Load splitting rule: disable

# Display the RPF routes of the VPN instance VPNA on the receiver PE when a backup route exists after an mLDP In-Band MVPN is configured.

<HUAWEI> display multicast vpn-instance vrf1 rpf-info 33.33.33.33
 VPN-Instance: vrf1
 RPF information about source: 33.33.33.33
     RPF interface: pseudo, RPF neighbor: 1.1.1.30
     Referenced route/mask: 33.33.33.33/32
     Referenced route type: bgp
     Route selection rule: preference-preferred
     Load splitting rule: disable
     VRF Route Import Extended Community : 1.1.1.30:0
     Source AS Extended Community : 0

**Table 1** Description of the **display multicast rpf-info** command output
Item	Description
RPF information about source	Multicast source to which the multicast RPF path belongs.
RPF interface	RPF interface, including the actual interface and MVPN extranet interface.
RPF neighbor	RPF neighbor.
RPF Source VPN-Instance	Source VPN instance of the RPF route.
RPF used topology	Indicates the topology used by the RPF route.
Referenced route/mask	Referenced route and its mask.
Referenced route type	Indicates the protocol : unicast. mstatic. migp. mbgp.
Referenced route preference	Indicates the route preference.
Referenced route cost	Indicates the route cost.
Referenced route nexthop	Indicates the next hop of the route.
Referenced interface	Indicates the downstream interface.
Route selection rule	RPF route selection rule. preference-preferred indicates that route selection is based on the preferences of routing protocols.
Load splitting rule	Load splitting rules: disable: load splitting 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.
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 referenced route interface	Indicates the outbound interface of a backup route.
Backup referenced route nexthop	Indicates the next hop of a backup route.
backup RPF neighbor	Backup RPF neighbor.
Total route information about source 8.8.8.8	Indicates total route information about source 8.8.8.8.
Source AS Extended Community	Source AS Extended Community attribute in the MVPN extended community attributes.
frr is enabled	Information indicating that multicast FRR is enabled.
VRF Route Import Extended Community	VRF Route Import Extended Community attribute in the MVPN extended community attributes.
VPN-Instance	VPN instance to which displayed information belongs.