3com 8807 User Guide

C

HAPTER

 41: C

OMMON

 M

ULTICAST

 C

ONFIGURATION

n 

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When you insert a new interface module, if this interface module does not 
support the current multicast router table size configured in the system, this 
interface module will be disabled.

■

The new configuration replaces the earlier one when you execute this 
command repeatedly,

c 

During the configuration of multicast routing table size limit,

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If the current multicast routing table size limit is bigger than the configured 
value, the system prompts "Warning: Modifying the limit will delete all 
multicast routing-tables. Do you want to continue? [Y/N]"; if you choose "Y", 
the system removes all multicast routing tables, and sets new multicast routing 
table size.

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If the current multicast routing table size limit is smaller the configured value, 
or the current system does not support this kind of interface module, the 
system prompts "Slot X does not support the limit, configuration failed"; 
otherwise, a new multicast routing table size is successfully configured.

You can clear MFC forward entries or statistic information of FMC forward entries 
via the following command.

Perform the following configuration in user view.

You can clear route entries from the kernel multicast routing table, as well as MFC 
forwarding entries via the following command.

Perform the following configuration in user view.

The corresponding forwarding entries in MFC are cleared together with the 
clearing of routing entries of multicast routing table,

Table 425   Clear MFC forwarding entries or its statistic information

Clear MFC forwarding entries 
or its statistic information 

reset multicast forwarding-table [ statistics ] { all | { 
group-address [ mask { group-mask | group-mask-length } ] | 
source-address [ mask { source-mask | source-mask-length } ] | 
incoming-interface { null NULL-interface-number | 
interface-type interface-number } } * }

Table 426   Clear routing entries of multicast routing table

Clear routing entries of 
multicast routing table 

reset multicast routing-table { all | { group-address [ mask { 
group-mask | group-mask-length } ] | source-address [ mask { 
source-mask | source-mask-length } ] | incoming-interface 
vlan-interface interface-number } * }