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Cisco® Field Manual: Catalyst® Switch Configuration by Steve McQuerry, Dave Hucaby

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11-1. Broadcast Suppression

  • A network protocol can create a large amount of broadcast traffic.

  • In Layer 2 networks, broadcasts must be forwarded on all ports except the receiving port; because of this, a large or excessive number of broadcasts can have an impact on network and device performance.

  • Broadcast suppression enables you to control how a receiving port handles excessive broadcast traffic.

  • By configuring a threshold, a port can be configured to stop flooding broadcasts for a predefined period or until the broadcasts fall below a certain level.

  • Suppressing these broadcasts will prevent them from being forwarded out other switch ports and limit the effect they have on the network.

  • Suppression of the broadcasts does not have any effect on the ...

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