display multicast forwarding-table

Function

The display multicast forwarding-table command displays the multicast forwarding table.

Format

For NetEngine 8000 F2A:

display multicast [ vpn-instance vpn-instance-name | all-instance ] forwarding-table [ slot slot-id | group-address [ mask { group-mask-length | group-mask } ] | source-address [ mask { source-mask-length | source-mask } ] | [ verbose ] | incoming-interface { { interface-type interface-number | interface-name } | register } | outgoing-interface { include | exclude | match } { { interface-type interface-number | interface-name } | register | none } | statistics ] ^*

For NetEngine 8000 F1A:

display multicast [ vpn-instance vpn-instance-name | all-instance ] forwarding-table [ slot slot-id | group-address [ mask { group-mask-length | group-mask } ] | source-address [ mask { source-mask-length | source-mask } ] | [ verbose ] | incoming-interface { { interface-type interface-number | interface-name } | register | clone } | outgoing-interface { include | exclude | match } { { interface-type interface-number | interface-name } | register | none | clone-pseudo } | statistics ] ^*

Parameters

Parameter	Description	Value
vpn-instance vpn-instance-name	Specifies a VPN instance. vpn-instance-name specifies the name of the VPN instance.	The name is a string of 1 to 31 characters.
all-instance	Indicates all the instances.	-
slot slot-id	Specifies the slot number of an interface board. The parameter is used to describe only distributed devices. If slot-number is not specified, information about all multicast forwarding entries on the main control board is displayed.	The value is a string of 1 to 15 case-sensitive characters, spaces not supported.
group-address	Specifies the multicast group address, used to specify a multicast group.	The address is in dotted decimal notation and ranges from 224.0.1.0 to 239.255.255.255.
mask	Indicates the mask of a multicast address or source address.	-
group-mask-length	Specifies the mask length of the multicast group address.	The value is a decimal integer that ranges from 4 to 32.
group-mask	Specifies the mask of the multicast group address.	The mask is in dotted decimal notation.
source-address	Specifies the mask of the multicast source address.	The mask is in dotted decimal notation.
source-mask-length	Specifies the mask length of the multicast source address.	The value is a decimal integer that ranges from 0 to 32.
source-mask	Specifies the mask of the multicast source address.	The mask is in dotted decimal notation.
verbose	Detailed information.	-
incoming-interface	Indicates the incoming interface of a multicast forwarding entry.	-
interface-type	Specifies the type of an interface.	-
interface-number	Specifies the number of an interface.	-
interface-name	Specifies the name of an interface.	-
register	Indicates the register interface of a multicast forwarding entry.	-
outgoing-interface	Indicates the outgoing interface of a multicast forwarding entry.	-
include	Indicates the (S, G) entry list that contains the specified downstream interface.	-
exclude	Indicates the (S, G) entry list that does not contain the specified downstream interface.	-
match	Indicates the (S, G) entry list that matches the specified interface and the (S, G) entries have only one specified interface.	-
none	Indicates that the downstream interface list is null.	-
statistics	Indicates the statistics of the multicast forwarding table.	-
clone	Cloned outbound interface. NOTE: This parameter is supported only on the NetEngine 8000 F1A.	-
clone-pseudo	Cloned incoming interface. NOTE: This parameter is supported only on the NetEngine 8000 F1A.	-

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
forwarding	read

Usage Guidelines

Usage Scenario

The display multicast forwarding-table command is used to view the multicast forwarding table on the main control board or an interface board. If no slot number is specified in this command, the multicast forwarding table on the main control board is displayed.

Configuration Impact

Running the display multicast forwarding-table command consumes resources on the main control board or interface board.

Example

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

# Display the multicast forwarding entries with the VPN instance of vrf1 by slot-id

<HUAWEI> display multicast vpn-instance vrf1 forwarding-table 225.0.0.1 slot 1
Multicast Forwarding Table of VPN-Instance: vrf1                                                                                    
Total 1000 entry                                                                                                                    
                                                                                                                                    
1.(192.168.1.2, 225.0.0.1)                                                                                                           
     MID: 715, Flags: 1                                                                                                             
     Incoming interface: GigabitEthernet0/1/1.1                                                                                    
     List of 1 outgoing interfaces:                                                                                                 
                                                                                                                                    
       1: pseudo (sd 0 si 0 bsl 64)                                                                
         Activetime: 00:12:24                                                                                                       
Total 1 entries matched

# Display the multicast forwarding table on root node in the NG MVPN scenario.

<HUAWEI> display multicast all-instance  forwarding-table  verbose
1.(10.1.1.2, 225.0.0.5)
     MID: 4136, Flags: 1
     Uptime: 00:27:26, Timeout in: 00:03:30
     Incoming interface: GigabitEthernet0/1/28.300
     List of 1 outgoing interfaces:
       1: pseudo
         Activetime:00:09:26
         Mtoken: 0x4C4B43
         Out tunnel information: total number is 1
           1: 0x4C4B43, 0x82
             Activetime: 00:09:26
     Matched rate: 42251 packets/sec, 37180936 bits/sec
     Matched 66420781 packets(7306285910 bytes), Wrong If 0 packets
     Forwarded 22051719 packets(2425689090 bytes)

# Display the multicast forwarding entries with the VPN instance of vrf1.

<HUAWEI> display multicast vpn-instance vrf1 forwarding-table 225.0.0.1
Multicast Forwarding Table of VPN-Instance: vrf1                                                                                    
Total 1000 entry, 1 matched                                                                                                         
                                                                                                                                    
1.(192.168.1.2, 225.0.0.1)                                                                                                           
     MID: 715, Flags: 1                                                                                                             
     Uptime: 00:31:00, Timeout in: 00:03:23                                                                                         
     Incoming interface: GigabitEthernet0/1/1.1                                                                                    
     List of 1 outgoing interfaces:                                                                                                 
       1: pseudo (sd 0 si 0 bsl 64)                                                                
         Activetime:00:10:36                                                                                                        
     Matched rate: 83 packets/sec, 73184 bits/sec                                                                                   
     Matched 151977 packets(16717470 bytes), Wrong If 0 packets                                                                     
     Forwarded 51265 packets(5639150 bytes)

# Display the multicast forwarding table in the NG MVPN dual-root scenario.

<HUAWEI> display multicast vpn-instance ng forwarding-table slot 1
Multicast Forwarding Table of VPN-Instance: ng

Total 1 entry

1.(10.1.1.5, 225.0.0.1)
     MID: 832, Flags: 1
     Incoming interface: GigabitEthernet0/1/1
     Selected root: 1.1.1.1
     List of 1 outgoing interfaces:
       1: pseudo
     Activetime: 02:35:57
Total 1 entries matched

# Display network-side multicast forwarding table information in an AP replication scenario.

<HUAWEI> display multicast forwarding-table verbose slot 1
Multicast Forwarding Table of VPN-Instance: public_net

Total 1 entries      
4.(10.1.1.2, 239.0.0.6)
     MID: 8259, Flags: 1
     Incoming interface: GigabitEthernet0/1/0.1
     List of 1 outgoing interfaces:
       1: GigabitEthernet0/1/1.1 (bas)
     Activetime: 02:35:57
     Total number of replicated flows is 3

# Display the network-side multicast forwarding table before cloning is performed in a source cloning PIM FRR scenario.

<HUAWEI> display multicast forwarding-table
Multicast Forwarding Table of VPN-Instance: public_net

Total 1 entry, 1 matched

1.(10.1.1.5, 239.0.0.1)
     MID: 832, Flags: 1
     Uptime: 01:04:23, Timeout in: 00:03:22
     Incoming interface: GigabitEthernet0/1/1
     List of 1 outgoing interfaces:
       1: GigabitEthernet0/1/0
     Activetime: 02:35:57
     Matched rate: 0 packets/sec, 0 bits/sec
     Matched 0 packets(0 bytes), Wrong If 0 packets
     Forwarded 0 packets(0 bytes)

**Table 1** Description of the **display multicast forwarding-table** command output
Item	Description
1	Sequence number of the (S, G) entry.
Multicast Forwarding Table of VPN-Instance	VPN instance to which the multicast forwarding table corresponds.
Total 1 entry, 1 matched	Total number of forwarding entries and number of eligible forwarding entries.
Incoming interface	Upstream interface of the (S, G) entry.
List of 1 outgoing interfaces	Outbound interface information.
1: GigabitEthernet0/1/0	Indicates the sequence number and name of a downstream interface.
Timeout in	Overtime of multicast forwarding table.
Out tunnel information	Out tunnel information.
Matched 0 packets(0 bytes), Wrong If 0 packets	Indicates the number of multicast packets and bytes that match the (S, G) entry and the number of packets with incorrect upstream interfaces.
Matched rate	Multicast traffic match packet rate, bit rate. It is updated every 15 seconds.
Forwarded 0 packets(0 bytes)	Indicates the number of packets and bytes forwarded by the (S, G) entry.
Selected root	Root IP.
(bas)	Broadband access server flag.
(10.1.1.5, 239.0.0.1)	(S, G) entry in the multicast routing table.
MID	Uniquely identifies the multicast forwarding entry in the MFIB table. MID is used to rapidly search the multicast forwarding table.
Activetime	Time since the outbound interface went Up.
Flags	Status flag of the (S, G) entry. If the multicast forwarding table on the main control board is displayed: 1: indicates multicast forwarding entries have been delivered to interface boards. 0: indicates multicast forwarding entries have not been delivered to interface boards. If the multicast forwarding table on an interface board is displayed: 1: indicates that the multicast traffic statistics require attention. 0: indicates that the multicast traffic statistics are ignored.
Uptime	Living time of multicast forwarding table.
Mtoken	Mtoken of the tunnel.