set dcb appPri

Use this command to set the priority to be advertised to the link peer of the specified port for the specified application.

Syntax

set dcb appPri port-string protocol {ethertype | tcp | udp | l4port} protocol-id protocol-id priority priority

Parameters

port-string Specifies the port to apply the Application Priority setting to.
protocol ethertype | tcp | udp | l4port Specifies the protocol to associate with the advertised priority:
  • ethertype – Specifies that the protocol is the one encapsulated in the payload of an Ethernet frame
  • tcp – Specifies the protocol is a well known TCP port
  • udp – Specifies the protocol is a well known UDP port
  • l4port – Specifies the protocol is a well known Layer 4 (TCP and UDP) port
protocol-id protocol-id Specifies the ID of the protocol to be advertised. Valid values are from 0 - 65535 depending upon the protocol specified.
priority priority Specifies the priority to be advertised with the specified protocol.

Defaults

None.

Mode

All command modes.

Usage

Application priority advertises to the peer a preferred priority for frames carrying application-specific traffic. Application priority does not perform any priority tagging on the source device. The source device‘s link peer that receives the Application Priority TLV tags its traffic to the advertised priority. Application priority works along with Enhanced Transmission Selection (ETS) and Priority-based Flow Control (PFC) in that tagged protocol-specific traffic for the specified priority enforces ETS and PFC settings on that traffic.

Note

Note

The application priority feature requires that the peer supports the LLDP willing bit and the willing bit is enabled. Extreme Networks switches do not currently support the LLDP willing bit.

Use the set lldp port tx-tlv application-pri command to enable the sending of an Application Priority TLV on the port using the LLDP-DCB Application Priority TLV.

Examples

This example shows how to advertise priority 4 for the UDP service type dpkeyserv on port 1780 on port ge.1.2 and to enable the sending of LLDP-DCB Application Priority TLVs from that port:

System(rw)->set dcb appPri ge.1.2 protocol udp protocol-id 1780 priority 4
System(rw)->set lldp port tx-tlv application-pri ge.1.2