Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 732
Use PIM-SSM with IGMP version 2 Hosts
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www.dell.com | support.dell.com Use PIM-SSM with IGMP version 2 Hosts PIM-SSM requires receivers that support IGMP version 3. You can employ PIM-SSM even when receivers support only IGMP version 1 or version 2 by translating (*,G) entries to (S,G) entries. Translate (*,G) entries to (S,G) entries using the command ip igmp ssm-map acl source from CONFIGURATION mode. In a standard access list, specify the groups or the group ranges that you want to map to a source. Then, specify the multicast source. • When a SSM map is in place and FTOS cannot find any matching access lists for a group, it continues to create (*,G) entries because there is an implicit deny for unspecified groups in the ACL. • When you remove the mapping configuration, FTOS removes the corresponding (S,G) states that it created and reestablishes the original (*,G) states. • You may enter multiple ssm-map commands for different access lists. You may also enter multiple ssm-map commands for the same access list, as long as they use different source addresses. • When an extended ACL is associated with this command, FTOS displays an error message. If you apply an extended ACL before you create it, FTOS accepts the configuration, but when the ACL is later defined, FTOS ignores the ACL and the stated mapping has no effect. Display the source to which a group is mapped using the command show ip igmp ssm-map [group], as shown in the example below. If the group option is used, the command displays the group-to-source mapping even if the group is not currently in the IGMP group table. If you do not specify the group option, then the display is a list of groups currently in the IGMP group table that have a group-to-source mapping. Display the list of sources mapped to a group currently in the IGMP group table using the command show ip igmp groups group detail, as shown in the example below. 732 | PIM Source-Specific Mode
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