3com S7906E Instruccion De Instalación

 

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An IPv6 static (S, G) join takes effect only if a valid IPv6 multicast source address is specified and 

MLD snooping version 2 is currently running.  

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A static member port does not respond to queries from the MLD querier; when static (*, G) or (S, G) 

joining is enabled or disabled on a port, the port does not send an unsolicited MLD report or an 

MLD done message.   

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If MLD is enabled on the virtual interface of a VLAN, and you want a port in that VLAN to be a static 

member port for an IPv6 multicast group or an IPv6 multicast source and group, in addition to 

configuring the port as a static member port, you need to use the mld static-group command to 

configure the VLAN interface to be a static member of the IPv6 multicast group or source and group. 

For details of the mld static-group command, refer to MLD Commands in the IP Multicast Volume. 

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Static member ports and static router ports never age out. To remove such a port, you need to use 

the corresponding undo command. 

 

Generally, a host running MLD responds to MLD queries from the MLD querier. If a host fails to respond 

due to some reasons, the multicast router will deem that no member of this IPv6 multicast group exists 

on the network segment, and therefore will remove the corresponding forwarding path.  

To avoid this situation from happening, you can enable simulated joining on a port of the switch, namely 

configure the port as a simulated member host for an IPv6 multicast group. When an MLD query is 

received, simulated host gives a response. Thus, the switch can continue receiving IPv6 multicast data.  

A simulated host acts like a real host, as follows: 

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When a port is configured as a simulated member host, the switch sends an unsolicited MLD report 

through that port. 

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After a port is configured as a simulated member host, the switch responds to MLD general queries 

by sending MLD reports through that port.  

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When the simulated joining function is disabled on a port, the switch sends an MLD done message 

through that port. 

Follow these steps to configure simulated joining:  

Enter system view 

— 

interface interface-type 
interface-number 

Enter Ethernet port/ONU 
port/Layer 2 aggregate 
interface view or port group 
view 

port-group manual 
port-group-name 

Required 

Use either approach 

Configure simulated joining 

mld-snooping host-join 
ipv6-group-address [ source-ip 
ipv6-source-address ] vlan 
vlan-id 

Required 

Disabled by default