Qtech QSW-8200-28F-AC-DC — руководство пользователя: Протокол IPv6 Multicast и MLD Snooping [32/39]

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User Manual

Chapter 2. IPv6 Multicast Protocol 32

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general queries periodically to help the switches within this segment learn mrouter

port.

 Comment: There are three ways to learn mrouter port in MLD Snooping:

 The port which receives MLD query messages

 The port which receives multicast protocol packets and support PIM

 The port statically configured.

 Example: Set VLAN 100 to L2 general querier.

 Switch (config)# ipv6 mld snooping vlan 100 l2-general-querier

2.2.8 ipv6 mld snooping vlan limit

 Command: ipv6 mld snooping vlan < vlan-id > limit {group <g_limit> | source

<s_limit>}

 no ipv6 mld snooping vlan < vlan-id > limit

 Function: Configure number of groups the MLD snooping can join and the maximum

number of sources in each group.

 Parameter: vlan-id: VLAN ID, the valid range is <1-4094>

 g_limit: <1-65535>, max number of groups joined

 s_limit: <1-65535>, max number of source entries in each group, consisting of include

source and exclude source

 Command Mode: Global Mode

 Default: Maximum 50 groups by default, with each group capable with 40 source

entries.

 Usage Guide: When number of joined group reaches the limit, new group requesting

for joining in will be rejected for preventing hostile attacks. To use this command, MLD

snooping must be enabled on VLAN. The “no” form of this command restores the

default other than set to “no limit”. For the safety considerations, this command will

not be configured to “no limit”. It is recommended to use default value and if layer 3

MLD is in operation, please make this configuration in accordance with the MLD

configuration as possible.

 Example: Switch(config)#ipv6 mld snooping vlan 2 limit group 300

2.2.9 ipv6 mld snooping vlan mrouter-port interface

 Command: ipv6 mld snooping vlan <vlan-id> mrouter-port interface

[<ethernet>|<port-channel>] <ifname>

o no ipv6 mld snooping vlan <vlan-id> mrouter-port interface

[<ethernet>|<port-channel>] <ifname>

 Function: Set the static mrouter port of the VLAN; the “no” form of this command

cancels the configuration.

 Parameter: vlan-id: VLAN id, the valid range is<1-4094>

 Ehternet: name of Ethernet port

 Ifname: Name of interface