3com S7906E インストール手順

 

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To address this situation, you can enable the IPv6 multicast group replacement function on the switch or 

certain ports. When the number of IPv6 multicast groups a switch or a port has joined exceeds the limit.  

z 

If the IPv6 multicast group replacement is enabled, the newly joined IPv6 multicast group 

automatically replaces an existing IPv6 multicast group with the lowest IPv6 address.  

z 

If the IPv6 multicast group replacement is not enabled, new MLD reports will be automatically 

discarded.  

Follow these steps to configure IPv6 multicast group replacement globally:  

Enter system view 

— 

Enter MLD snooping view 

— 

Enable IPv6 multicast group 
replacement  

overflow-replace [ vlan 
vlan-list ] 

Required 

Disabled by default  

 

Follow these steps to configure IPv6 multicast group replacement on a port or a group of ports:  

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 

Enable IPv6 multicast group 
replacement  

mld-snooping 
overflow-replace [ vlan 
vlan-list ] 

Required 

Disabled by default  

 

Be sure to configure the maximum number of IPv6 multicast groups allowed on a port (refer to 

) before enabling IPv6 multicast 

group replacement. Otherwise, the IPv6 multicast group replacement functionality will not take effect.  

 

Configuring 802.1p Precedence for MLD Messages 

You can change 802.1p precedence of MLD messages so that they can be assigned higher forwarding 

priority when congestion occurs on their outgoing ports.  

Follow these steps to configure 802.1p precedence for MLD messages globally: