HP 6125G HP 6125G & 6125G/XG Blade Switches IP Multicast Configuration - Page 37
Configuring a source IP address for the IGMP messages sent by the proxy
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Step 2. Enter VLAN view. 3. Enable IGMP snooping proxying in the VLAN. Command vlan vlan-id igmp-snooping proxying enable Remarks N/A Disabled by default Configuring a source IP address for the IGMP messages sent by the proxy You can set the source IP addresses in the IGMP reports and leave messages that the IGMP snooping proxy sends on behalf of its attached hosts. To configure the source IP addresses for the IGMP messages that the IGMP snooping proxy sends on behalf of its attached hosts in a VLAN: Step Command 1. Enter system view. system-view 2. Enter VLAN view. vlan vlan-id 3. Configure a source IP address for the IGMP igmp-snooping report source-ip reports that the proxy sends. { ip-address | current-interface } 4. Configure a source IP address for the IGMP leave igmp-snooping leave source-ip messages that the proxy { ip-address | current-interface } sends. Remarks N/A N/A The default is 0.0.0.0. The default is 0.0.0.0. Configuring an IGMP snooping policy Before you configure an IGMP snooping policy, complete the following tasks: • Enable IGMP snooping in the VLAN. • Determine the ACL rule for multicast group filtering. • Determine the maximum number of multicast groups that a port can join. • Determine the 802.1p precedence for IGMP messages. Configuring a multicast group filter On an IGMP snooping-enabled switch, you can configure a multicast group filter to limit multicast programs available to users. In an application, when a user requests a multicast program, the user's host initiates an IGMP report. After receiving this report message, the switch resolves the multicast group address in the report and looks up the ACL. If a match is found to permit the port that received the report to join the multicast group, the switch creates an IGMP snooping forwarding entry for the multicast group and adds the port to the forwarding entry. Otherwise, the switch drops this report message, in which case, the multicast data for the multicast group is not sent to this port, and the user cannot retrieve the program. 26
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