3Com Router 3031, Command Reference Manual

Page: 689 / 838

Multicast Common Configuration Commands 689
Parameter
group-address: Multicast group address, used to specify a multicast group,
ranging from 224.0.0.0 to 239.255.255.255.
mask: Mask.
mask-length: Length of mask. Because “1”s in 32-bit mask are required to be
continuous, the mask in dotted decimal notation format can be replaced by
mask-length (mask-length is the number of continuous “1”s in the mask).
source-address: Unicast IP address of the multicast source.
incoming-interface: Incoming interface of the multicast forwarding entry.
register: Register interface of PIM-SM.
Description
Using the display multicast forwarding-table command, you can view the
information of multicast forwarding table.
source-address and group-address of multicast forwarding table are displayed in
hexadecimal notation format and its incoming and outgoing port numbers are
displayed by virtual port number. This information can be viewed via display pim
interface command.
For the related command, see display multicast routing-table.
Example
Display the multicast forwarding table information.
<3Com> display multicast forwarding-table
display multicast
routing-table
Syntax
display multicast routing-table [ group-address [ mask { mask | mask-length } ] |
source-address [ mask { mask | mask-length } ] | incoming-interface { interface-type
interface-number | register } ]*
View
Any view
Parameter
group-address: Multicast group address, used to specify a multicast group and
display the corresponding routing table information of the group. The value
ranges from 224.0.0.0 to 239.255.255.255.
source-address: Unicast IP address of the multicast source.
mask: Mask.
mask-length: Length of mask. Because “1” in 32-bit mask is required to be
continuous, the mask in dotted decimal notation format can be replaced by
mask-length (mask-length is the number of continuous “1”s in the mask).
incoming-interface: Incoming interface of the multicast route entry.
register: Register interface of PIM-SM.