Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

Translate (*,G) entries to (S,G) entries using the ip igmp ssm-map acl command 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 an SSM map is in place and the Dell Networking OS 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, the Dell Networking OS removes the corresponding (S,G) states that it created and re-establishes 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, the system displays an error message. If you apply an extended ACL before you create it, the system accepts the configuration, but when the ACL is later defined, the system ignores the ACL and the stated mapping has no effect.

To display the source to which a group is mapped, use the show ip igmp ssm-map [group] command. If you use the group option, 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, the display is a list of groups currently in the IGMP group table that has a group-to-source mapping.

To display the list of sources mapped to a group currently in the IGMP group table, use the show ip igmp groups group detail command.

Configuring PIM-SSM with IGMPv2

R1(conf)#do show run pim
                                 !
                                 ip pim rp-address 10.11.12.2 group-address 224.0.0.0/4
                                 ip pim ssm-range ssm
                                 R1(conf)#do show run acl
                                 !
                                 ip access-list standard map
                                 seq 5 permit host 239.0.0.2
                                 !
                                 ip access-list standard ssm
                                 seq 5 permit host 239.0.0.2
                                 R1(conf)#ip igmp ssm-map map 10.11.5.2
                                 R1(conf)#do show ip igmp groups
                                 Total Number of Groups: 2
                                 IGMP Connected Group Membership
                                 Group Address   Interface   Mode          Uptime    Expires  Last Reporter
                                 239.0.0.2       Vlan 300    IGMPv2-Compat 00:00:07  Never    10.11.3.2
                                 Member Ports: Gi 1/1
                                 239.0.0.1 Vlan 400 INCLUDE 00:00:10 Never 10.11.4.2
                                 R1(conf)#do show ip igmp ssm-map
                                 IGMP Connected Group Membership
                                 Group Address  Interface   Mode           Uptime    Expires  Last Reporter
                                 239.0.0.2      Vlan 300    IGMPv2-Compat  00:00:36  Never    10.11.3.2
                                 Member Ports: Gi 1/1
                                 R1(conf)#do show ip igmp ssm-map 239.0.0.2
                                 SSM Map Information
                                 Group     : 239.0.0.2
                                 Source(s) : 10.11.5.2
                                 R1(conf)#do show ip igmp groups detail
                                 
                                 Interface           Vlan 300
                                 Group               239.0.0.2
                                 Uptime              00:00:01
                                 Expires             Never
                                 Router mode         IGMPv2-Compat
                                 Last reporter       10.11.3.2
                                 Last reporter mode  IGMPv2
                                 Last report         received Join
                                 Group source        list
                                 Source address      Uptime Expires
                                 10.11.5.2 00:00:01  Never
                                 
                                 Interface             Vlan 400
                                 Group                 239.0.0.1
                                 Uptime                00:00:05
                                 Expires               Never
                                 Router mode           INCLUDE
                                 Last reporter         10.11.4.2
                                 Last reporter mode    INCLUDE
                                 Last report received  ALLOW
                                 Group source list
                                 Source address  Uptime    Expires
                                 10.11.5.2       00:00:05  00:02:04
                                 Member Ports: Gi 1/2