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发表于 2008-4-14 13:00:10
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Catalyst 2900 XL and Catalyst 3500 XL Software Configuration Guide, 12.0(5)WC4 and 12.0(5)WC5
Configuring Protected Ports
Some applications require that no traffic be forwarded by the Layer 2 protocol between ports on the same switch. In such an environment, there is no exchange of unicast, broadcast, or multicast traffic between ports on the switch, and traffic between ports on the same switch is forwarded through a Layer 3 device such as a router.
To meet this requirement, you can configure Catalyst2900XL and Catalyst3500XL ports as protected ports (also referred to as private VLAN edge ports). Protected ports do not forward any traffic to protected ports on the same switch. This means that all traffic passing between protected ports—unicast, broadcast, and multicast—must be forwarded through a Layer 3 device. Protected ports can forward any type of traffic to unprotected ports, and they forward as usual to all ports on other switch |
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