User manual

APS User Manual
128
1.2.6-6 IPv6 SSM Information
Source Specific Multicast (SSM) is a datagram delivery model that best supports one-to-many
applications, also known as broadcast applications. SSM is a core network technology of IP multicast
targeted for audio and video broadcast application environments.
For the SSM delivery mode, an IP multicast receiver host must use IGMP Version 3 (IGMPv3) to
subscribe to channel (S, G). By subscribing to this channel, the receiver host is indicating that it
wants to receive IP multicast traffic sent by source host S to group G. The network will deliver IP
multicast packets from source host S to group G to all hosts in the network that have subscribed to
the channel (S, G).
SSM does not require group address allocation within the network, only within each source host.
Different applications running on the same source host must use different SSM groups. Different
applications running on different source hosts can arbitrarily reuse SSM group addresses without
causing any excess traffic on the network.
Web Interface
To view the IPv6 SSM Information via the Web Interface:
1. Click Configuration, MLD Snooping and IPv6 SSM Information.
2. If you want to auto-refresh the information you will need to check the Auto-Refresh tick box.
3. Click Refresh to manually refresh the information.
Fig. 58 IPv6 SSM information