Netgear XCM8806 Chassis User Manual - Page 736

NETGEAR 8800 User Manual } then { permit; } } After you create a policy file, use the following command to associate the policy file and filter to a set of ports: configure igmp snooping vlan ports filter [ | none] To remove the filter, use the none option. To display the IGMP snooping filters, use the following command: show igmp snooping {vlan} filter Limiting the Number of Multicast Sessions on a Port The default configuration places no limit on the number of multicast sessions on each VLAN port. To place a limit on the number of sessions, use the following command: configure igmp snooping {vlan} ports set join-limit {} To remove a session limit, use the following command: unconfigure igmp snooping {vlan} ports set join-limit Enabling and Disabling IGMP Snooping Fast Leave When the fast leave feature is enabled and the last VLAN host leaves a multicast group, the router immediately removes the VLAN interface from the multicast group. The router does not query the VLAN for other members of the multicast group before removing group membership and the multicast interface. The default setting for IGMP snooping fast leave is disabled. To enable the fast leave feature, use the following command: enable igmp snooping {vlan} fast-leave To disable the fast leave feature, use the following command: disable igmp snooping {vlan} fast-leave Using IGMP-SSM Mapping IGMPv1 and IGMPv2 hosts can use PIM SSM if IGMP-SSM mapping is enabled and configured on the XCM8800 switch. When the router receives an IGMPv1 or IGMPv2 membership report for a group G, the router uses SSM mapping to determine one or more source IP addresses for group G. SSM mapping then interprets (not translates) the membership report as an IGMPv3 report and sends out PIM-SSM joins toward (S1, G) to (Sn, G). 736 | Chapter 27. Multicast Routing and Switching