H3c-technologies H3C S3100V2 Series Switches Manuel d'utilisateur télécharger pdf (Page 83)

Follow these steps to enable dropping unknown IPv6 multicast data globally:

To do... Use the command... Remarks

Enter system view system-view —

Enter MLD snooping view mld-snooping —

Enable dropping unknown IPv6

multicast data

drop-unknown

Required

Disabled by default

Configuring MLD report suppression

When a Layer 2 switch receives an MLD report from an IPv6 multicast group member, the Layer 2 switch

forwards the message to the Layer 3 device directly connected with it. Thus, when multiple members that

belong to an IPv6 multicast group exist on the Layer 2 switch, the Layer 3 device directly connected with

it will receive duplicate MLD reports from these members.

When the MLD report suppression function is enabled, within a query interval, the Layer 2 switch

forwards only the first MLD report of an IPv6 group to the Layer 3 device. It will not forward the

subsequent MLD reports from the same multicast group to the Layer 3 device. This helps reduce the

number of packets that are transmitted over the network.

Follow these steps to configure MLD report suppression:

To do... Use the command... Remarks

Enter system view system-view —

Enter MLD snooping view mld-snooping —

Enable MLD report suppression

report-aggregation

Optional

Enabled by default

CAUTION:

On an MLD snoopin

proxy, MLD membership reports are suppressed if the entries for the correspondin

groups exist in the forwarding table, whether the suppression function is enabled or not.

Configuring maximum multicast groups that a port can join

The maximum number of IPv6 multicast groups that a port can join can limit the number of multicast

programs available to VOD users, to control the traffic on the port.

Follow these steps configure the maximum number of IPv6 multicast groups that a port can join:

To do... Use the command... Remarks

Enter system view system-view —

interface interface-type

interface-number

Enter Ethernet interface/Layer 2

aggregate interface view or port

group view

port-group manual

port-group-name

Required

Use either approach

Configure the maximum number of

IPv6 multicast groups that a port

can join

mld-snooping group-limit limit

[ vlan vlan-list ]

Optional

512 by default

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 110 111

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H3c-technologies H3C S3100V2 Series Switches Manuel d'utilisateur Page 83

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