Virtual Private LAN Services
7210 SAS-X, R6 OS Services Guide Page 241
• Proxy summarization of IGMP messages reduces the number of IGMP messages
processed by upstream devices in the network.
• IGMP filtering allows a subscriber to a service or the provider to block, receive, or
transmit permission (or both) to individual hosts or a range of hosts.
The following types of filters can be defined:
→ Filter group membership that report from a particular host or range of hosts. This
filtering is performed by importing an appropriately-defined routing policy into the
SAP or SDP.
→ Filters that prevent a host from transmitting multicast streams into the network. The
operator can define a data-plane filter (ACL) that drops all multicast traffic, and apply
this filter to a SAP or SDP.
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