Operation Manual – MulticastH3C S7500E Series Ethernet Switches Chapter 4 IGMP Configuration4-6z IS_IN: The source filtering mode is Include, namely, the report sender requeststhe multicast data from only the sources defined in the specified multicast sourcelist. If the specified multicast source list is empty, this means that the report senderhas left the reported multicast group.z IS_EX: The source filtering mode is Exclude, namely, the report sender requeststhe multicast data from any sources but those defined in the specified multicastsource list.z TO_IN: The filter mode has changed from Exclude to Include.z TO_EX: The filter mode has changed from Include to Exclude.z ALLOW: The Source Address fields in this Group Record contain a list of theadditional sources that the system wishes to hear from, for packets sent to thespecified multicast address. If the change was to an Include source list, these arethe addresses that were added to the list; if the change was to an Exclude sourcelist, these are the addresses that were deleted from the list.z BLOCK: indicates that the Source Address fields in this Group Record contain alist of the sources that the system no longer wishes to hear from, for packets sentto the specified multicast address. If the change was to an Include source list,these are the addresses that were deleted from the list; if the change was to anExclude source list, these are the addresses that were added to the list.4.1.5 Protocols and StandardsThe following documents describe different IGMP versions:z RFC 1112: Host Extensions for IP Multicastingz RFC 2236: Internet Group Management Protocol, Version 2z RFC 3376: Internet Group Management Protocol, Version 34.2 IGMP Configuration Task ListComplete these tasks to configure IGMP:Task RemarksEnabling IGMP RequiredConfiguring IGMP Versions OptionalConfiguring a Static Member of aMulticast Group OptionalConfiguring BasicFunctions of IGMPConfiguring an IGMP Multicast GroupFilter Optional
