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Which Priority Does an In...

Which Priority Does an Interface Trust?

Created: Apr 27, 2017 00:54:48Latest reply: Apr 27, 2017 03:29:24 1055 1 0 0 0

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Hello everyone,

Which priority does an interface trust?

Please help me. Thank you!

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ms.america Created Apr 27, 2017 03:29:24

An interface can be configured to trust DSCP priorities and 802.1p priorities simultaneously, or trust IP precedences and 802.1p priorities simultaneously. When an interface is configured to trust DSCP priorities and 802.1p priorities simultaneously, or trust IP precedences and 802.1p priorities simultaneously, the interface:

Trusts DSCP priorities or IP priorities if L3 packets are received.
Trusts 802.1p priorities if L2 packets are received.

NOTE:

The DSCP priority and IP precedence use different bits of the ToS field; therefore, an interface cannot be configured to trust DSCP priorities and IP precedences simultaneously.

The S5720SI, S5720S-SI, S5720LI, S5720S-LI, S5710-X-LI, S1720GW-E, S1720GWR-E, S1720GW, and S1720GWR do not support the trust ip-precedence command.

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