SMC Networks SMC8612XL3 F 1.0.1.3 Multicast Filtering

C ONFIGURING THE S WITCH
3-190
CLI – This example changes the DSCP priority for packets matching an
IP ACL rule, and the 802.1p priority for packets matching a MAC ACL
rule.
Multicast Filtering
Multicasting is used to support real-time
applications such as videoconferencing
or streaming audio. A multicast server
does not have to establish a separate
connection with each client. It merely
broadcasts its service to the network, and
any hosts that want to receive the
multicast register with their local
multicast switch/router. Although this
approach reduces the network overhead
required by a multicast server, the
broadcast traffic must be carefully
pruned at every multicast switch/router it
passes through to ensure that traffic is
only passed on to the hosts which
subscribed to this service.
This switch uses IGMP (Internet Group Management Prot ocol) to query
for any attached hosts that want to receive a specific multicast service. It
identifies the ports containing hosts requesting to join the service and
sends data out to those ports only. It then propagates the service req uest
up to any neighboring multicast switch/router to ensure that it will
Console(config)#interface ethernet 1/13-1
Console(config-if)#match access-list ip bill set dscp 03-130
Console(config-if)#match access-list mac mike set priority 03-145
Console(config-if)#end
Console#show marking3-131
Interface ethernet 1/1
match access-list IP bill set DSCP 0
match access-list MAC a set priority 0
Console#
Unicast
Flow
Multicast
Flow