display multicast ipv6 forwarding-table

Function

The display multicast ipv6 forwarding-table command displays the IPv6 multicast forwarding table.

Format

display multicast ipv6 forwarding-table [ ipv6-source-address [ ipv6-source-mask-length ] | ipv6-group-address [ ipv6-group-mask-length ] | incoming-interface { interface-type interface-number | register } | outgoing-interface { { exclude | include | match } { interface-type interface-number | register | none } } | { statistics | verbose } ] ^*

Parameters

Parameter	Description	Value
ipv6-source-address	Specifies the IPv6 address of a multicast source.	The address is a 32-digit hexadecimal number, in the format X:X:X:X:X:X:X:X.
ipv6-source-mask-length	Specifies the mask length of the multicast source address.	The value is an integer that ranges from 0 to 128.
ipv6-group-address	Specifies the IPv6 address of a multicast group.	The address is a 32-digit hexadecimal number, in the format X:X:X:X:X:X:X:X. An IPv6 multicast address starts with FF.
ipv6-group-mask-length	Specifies the mask length of a multicast group address.	The value is an integer that ranges from 8 to 128.
incoming-interface	Indicates the incoming interface of an IPv6 multicast forwarding entry.	-
interface-type interface-number	Specifies the type and number of an interface.	-
register	Indicates the register interface of PIM-SM.	-
outgoing-interface	Indicates the outgoing interface of an IPv6 multicast forwarding entry.	-
exclude	Indicates that the downstream interface list does not contain the route forwarding entries of a specified interface.	-
include	Indicates that the downstream interface list contains the route forwarding entries of a specified interface.	-
match	Indicates that the downstream interface list matches the route forwarding entries of a specified interface.	The downstream interface list contains only one eligible interface. After match is configured, the route forwarding entries of a null downstream interface list are displayed if the outgoing interface is not specified.
none	Displays the (S, G) entry without a downstream interface.	-
statistics	Displays the statistics of the multicast forwarding table.	-
verbose	Displays the detailed information about the multicast forwarding table.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

During IPv6 multicast routing and forwarding, routing information generated by IPv6 multicast routing protocols is saved in an IPv6 multicast routing table. The switch selects the optimal multicast routes from the routing table according to multicast routing and forwarding policies, and then delivers the selected multicast routes to the IPv6 multicast forwarding table to guide multicast data forwarding.

You can use the display multicast ipv6 forwarding-table command to check whether IPv6 multicast forwarding entries have been generated and whether multicast data can be forwarded normally.

Example

# Display the IPv6 multicast forwarding table.

<HUAWEI> display multicast ipv6 forwarding-table
IPv6 Multicast Forwarding Table
Total 2 entries, 2 matched

00001. (FC00:AA::123, FF33::)
     MID: 0, Flags: ACT
     Uptime: 00:01:03, Timeout in: 00:02:27
     Incoming interface: Vlanif10
     List of 1 outgoing interfaces:
       1: LoopBack0
         Activetime: 00:23:15
     Matched 0 packets(0 bytes), Wrong If 0 packets
     Forwarded 0 packets(0 bytes)

00002. (FC00:AA::123, FF34::)
     MID: 1, Flags: ACT
     Uptime: 00:00:03, Timeout in: 00:03:27
     Incoming interface: Vlanif20
     List of 1 outgoing interfaces:
       1: LoopBack0
         Activetime: 00:23:15
     Matched 0 packets(0 bytes), Wrong If 0 packets
     Forwarded 0 packets(0 bytes)

Choose Columns...

**Table 1** Description of the **display multicast ipv6 forwarding-table** command output
Item	Description
IPv6 Multicast Forwarding Table	IPv6 multicast forwarding table.
Total 2 entries, 2 matched	Total forwarding entries and total eligible forwarding entries.
00001	Number of the (S, G) entry.
(FC00:AA::123, FF33::)	(S, G) entry in the multicast routing table.
MID	Unique multicast forwarding entry in the MFIB table. MID is used to rapidly search the multicast forwarding table.
Flags	Status flag of the (S, G) entry. ACT: indicates that an active event is triggered. DUM: indicates a dummy entry. MISS: indicates that the nocache time needs to be reported. DROP: indicates packet dropping. LTH: indicates that the traffic volume is below the threshold. DEL: indicates a deleted entry. RST: indicates that registration of the known timer is started. 2IODEL: indicates that an entry is deleted from the MFIB table, and the update needs to be synchronized to the IO board. 2PDEL: indicates that an entry is deleted from the device, and the update needs to be synchronized to the IO board. 2SYNC: indicates that the entry is contained in the MFIB table but it does not exist on the device. 2ADD: indicates that the entry existing on the device has not been added to the MFIB table. CLR: indicates that the MFIB table is resetting. L2FWD: indicates that the device forwards Layer 2 traffic in multicast mode. NORPF: indicates that the device does not perform RPF check. 2ACK: indicates that the VPN instance is waiting for the ACK message from the slave main control board. 2RSED: indicates that the entry is waiting for retransmission. IOACK: indicates that the VPN instance has received the ACK message from the device. SACK: indicates that the VPN instance has received the ACK message forwarded by software. BKCLR: indicates that the MFIB table on the slave main control board is resetting. EXTR: indicates an extranet entry. 2DEL: indicates that the entry deleted from the device has not been removed from the MFIB table. PDEL: indicates that the entry does not exist on the device. A denotes addition; D denotes deletion; I denotes upstream update; R denotes RP update; P denotes PMBR; F denotes flag. S denotes SPT; E denotes encapsulation group update; US denotes status update; CS denotes status clearing.
Uptime	Period during which the (S, G) entry exists.
Timeout in	Remaining time of the (S, G) entry.
Incoming interface	Incoming interface of the (S, G) entry.
List of 1 outgoing interfaces: 1: LoopBack0	Outgoing interface list, including the outgoing interface number and name.
Activetime	Existing time of the outgoing interface of the (S, G) entry.
Matched 0 packets(0 bytes)	NOTE: Only the S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-HI, S6730-H, S6730S-H, S6730-S, and S6730S-S can provide the accurate counter values.
Wrong If 0 packets	Number of multicast packets matching the (S, G) entry but are not forwarded. NOTE: Only the S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-HI, S6730-H, S6730S-H, S6730-S, and S6730S-S can provide the accurate counter values.
Forwarded 0 packets(0 bytes)	Number of packets and bytes forwarded by the (S, G) entry. NOTE: Only the S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-HI, S6730-H, S6730S-H, S6730-S, and S6730S-S can provide the accurate counter values.