H3C Technologies H3C SecPath F1000-E - Manual (Page 24)

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in excess will not be deleted immediately; instead they will be deleted by the multicast routing protocols
running on the router. The router will no longer update the multicast forwarding entry for newly added
downstream nodes until the number of existing downstream nodes comes down below the configured
value.
Follow these steps to configure the multicast forwarding table size on the public network:
To do... Use the command... Remarks
Enter system view system-view —
Configure the maximum number of
entries in the multicast forwarding
table
multicast forwarding-table
route-limit limit
Optional
The default is the maximum number
allowed by the system.
Configure the maximum number of
downstream nodes for a single
multicast forwarding entry
multicast forwarding-table
downstream-limit limit
Optional
The default is the maximum number
allowed by the system.
Tracing a Multicast Path
You can run the mtracert command to trace the path down which the multicast traffic flows from a given
first-hop router to the last-hop router.
To do… Use the command… Remarks
Trace a multicast path
mtracert source-address
[ [ last-hop-router-address ]
group-address ]
Required
Available in any view
Displaying and Maintaining Multicast Routing and
Forwarding
To do... Use the command... Remarks
Display multicast boundary
information
display multicast boundary [ group-address [ mask |
mask-length ] ] [ interface interface-type
interface-number ]
Available in
any view
Display multicast forwarding
table information
display multicast forwarding-table [ source-address
[ mask { mask | mask-length } ] | group-address [ mask
{ mask | mask-length } ] | incoming-interface
{ interface-type interface-number | register } |
outgoing-interface { { exclude | include | match }
{ interface-type interface-number | register } } |
statistics ] * [ port-info ]
Available in
any view
Display multicast routing table
information
display multicast routing-table [ source-address
[ mask { mask | mask-length } ] | group-address [ mask
{ mask | mask-length } ] | incoming-interface
{ interface-type interface-number | register } |
outgoing-interface { { exclude | include | match }
{ interface-type interface-number | register } } ] *
Available in
any view