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FTOS Configuration Guide for the C-Series - Force10 Networks

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Tune <strong>the</strong> Central Scheduler <strong>for</strong> Multicast<br />

Allocate More Bandwidth <strong>for</strong> Multicast<br />

The Central Scheduler is responsible <strong>for</strong> scheduling unicast and multicast packets via <strong>the</strong> Terabit<br />

backplane. The default configuration of <strong>the</strong> Central Scheduler is optimized <strong>for</strong> network environments<br />

primarily <strong>for</strong>warding unicast traffic. 80% of <strong>the</strong> scheduler weight is <strong>for</strong> unicast traffic and 20% is <strong>for</strong><br />

multicast traffic. <strong>FTOS</strong> provides <strong>the</strong> ablitity to adjust <strong>the</strong> scheduling weight <strong>for</strong> multicast traffic. For<br />

example, if <strong>the</strong> majority of your traffic is multicast, <strong>the</strong> default configuration might yeild greater latency. In<br />

this case, allocate more backplane bandwidth <strong>for</strong> multicast using <strong>the</strong> command queue multicast<br />

bandwidth-percent from CONFIGURATION mode.<br />

View your configuration using <strong>the</strong> command show queue backplane multicast bandwidth-percent from<br />

EXEC Privilege mode.<br />

640 Multicast Features

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