3com S7906E Instruccion De Instalación

 

1-7 

You can configure the maximum number of entries in the IGMP Snooping forwarding table of a multicast 

VLAN. When the number of forwarding entries maintained for a multicast VLAN reaches the threshold, 

the device creates no more forwarding entries until some entries time out or get manually removed.  

Follow these steps to configure the maximum number of entries in the forwarding table 

Enter system view 

system-view 

— 

Configure the maximum 
number of forwarding entries in 
a multicast VLAN 

multicast-vlan entry-limit limit

Required 

1000 by default.  

 

If the number of existing entries in the IGMP Snooping forwarding table of a multicast VLAN is larger 

than the limit when you configure it, the system informs you to remove excessive entries. In this case, 

the system does not automatically remove any existing entries or create new entries.  

 

Display information about a 
multicast VLAN 

display multicast-vlan 
[ vlan-id ] 

Available in any view 

 

z 

Router A connects to a multicast source through GigabitEthernet2/0/1 and to Switch A, through 

GigabitEthernet 2/0/2.  

z 

IGMPv2 is required on Router A, and IGMPv2 Snooping is required on Switch A. Router A is the 

IGMP querier.  

z 

Switch A’s GigabitEthernet 2/0/1 belongs to VLAN 10, GigabitEthernet 2/0/2 through 

GigabitEthernet2/0/4 belong to VLAN 2 through VLAN 4 respectively, and Host A through Host C 

are attached to GigabitEthernet 2/0/2 through GigabitEthernet 2/0/4 of Switch A respectively.  

z 

The multicast source sends multicast data to multicast group 224.1.1.1. Host A, Host B, and Host C 

are receivers of the multicast group.