Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 594
Disable MLD Snooping on a VLAN, Con the Switch as a Querier, Disable Multicast Flooding
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www.dell.com | support.dell.com Disable MLD Snooping on a VLAN When MLD is enabled globally, it is by default enabled on all VLANs. Disable snooping on a VLAN, using the command no ipv6 mld snooping from INTERFACE VLAN mode. Note that under the default configuration there is no need to configure ipv6 mld snooping for any VLAN. Configure the Switch as a Querier Hosts that do not support unsolicited reporting wait for a general query before sending a membership report. When the multicast source and receivers are in the same VLAN, multicast traffic is not routed, and so there is no querier. You must configure the switch to be the querier for a VLAN so that hosts send membership reports, and the switch can generate a forwarding table by snooping. Configure the switch to be the querier for a Layer 2 VLAN using the command ipv6 mld snooping querier from INTERFACE VLAN mode. You must configure an IP address for the VLAN. The source address of the queries is 0 to distinguish these queries from router queries. If the system receives a query with a non-zero address any VLAN interface, it stops sending queries. When a VLAN configured with snooping querier comes up, the VLAN interface waits for querier timeout to expire before becoming querier. Disable Multicast Flooding If the switch receives a multicast packet that has an IP address of a group it has not learned (unregistered frame), the switch floods that packet out of all ports on the VLAN. You can configure the switch to only forward unregistered packets to ports on a VLAN that are connected to a multicast routers using the command no ipv6 mld snooping flood from CONFIGURATION mode. When flooding is disabled, if there are no such ports in the VLAN connected to a multicast router, the switch drops the packets. Specify a Port as Connected to a Multicast Router All MLD control packets and IP multicast data traffic originating from hosts are forwarded out all interfaces connected to multicast routers. These interfaces are called multicast router interfaces, or mrouter interfaces. You can statically specify a port in a VLAN as connected to a multicast router using the command ipv6 mld snooping mrouter interface from INTERFACE VLAN mode. View the ports that are connected to multicast routers using the command show ipv6 mld snooping mrouter from EXEC Privilege mode. 594 | Multicast Listener Discovery
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