Which Priority Does an Interface Trust?

Latest reply: May 18, 2017 00:51:00 892 1 0 0
Which Priority Does an Interface Trust?
  • x
  • convention:

ms.america
Created May 18, 2017 00:51:00 Helpful(0) Helpful(0)

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.

  • x
  • convention:

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