D-Link DGS-3630-28SC Web UI Reference Guide 2 - Page 295

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide Parameter Group Description Enter the IP multicast group address here. Click the Find button to locate a specific entry based on the information entered. Click the Clear button to clear the entries based on the information specified. Click the Show All button to display all the entries. Click the Clear All button to clear all the entries. IGMP SSM Mapping Settings This window is used to display and configure the IGMP SSM mapping settings. The deployment of Source Specific Multicast (SSM) allows the network service provider to manage IP multicast addresses easily. When SSM is enabled, the last hop router will establish a source-based tree for the channel (S, G) on receiving a (S, G) INCLUDE request that falls in the SSM range from the attached IGMPv3 hosts. There are cases that the attached host is IGMPv1 or IGMPv2 hosts which only issue (*, G) requests. With the SSM mapping, if the multicast group being requested falls in the SSM range, the router is able to map the (*, G) to a (S, G) request based on the group address to source address mapping defined here. The router will then establish the source-based tree for the mapped (S, G). If multiple associations exist, the router will establish a (S, G) source-based tree for each S. To view the following window, click L3 Features > IP Multicast Routing Protocol > IGMP > IGMP SSM Mapping Settings, as shown below: Figure 6-99 IGMP SSM Mapping Settings Window The fields that can be configured in IGMP SSM Mapping Settings are described below: Parameter SSM Mapping State Description Select to enable or disable the SSM mapping feature for IGMPv1 or IGMPv2 hosts. Click the Apply button to accept the changes made. The fields that can be configured in Add Static SSM Mapping are described below: Parameter Source Address Description Enter the source address to be associated with the group defined in the access list here. 283