Configuring The Dcbx Version - HP 6125XLG Configuration Manual

Step
4. Enable PFC for specific 802.1p
priorities.
5. Configure the interface to trust
the 802.1p priority carried in
packets.
For more information about the priority-flow-control and priority-flow-control no-drop dot1p commands,
see Interface Command Reference.

Configuring the DCBX version

DCBX has three versions: DCBX Rev 1.00, DCBX Rev 1.01, and IEEE Std 802.1Qaz™-201 1 (standard
version). The device supports autonegotiation of the three versions with the peer and uses the standard
version as the initial version for negotiation.
When the device is connected to a DCBX-enabled peer device, the following apply:
If the peer device does not support autonegotiation, the device will change its DCBX version to
•
match that on the peer device.
If the peer device supports autonegotiation and also uses the standard version as the initial version
•
for negotiation, the standard version will be the negotiated result.
• If the peer device supports autonegotiation and uses a different DCBX version as the initial version
for negotiation, the standard version or the initial version the peer device uses will be the negotiated
result.
When the negotiated result is not the expected one, you can configure the expected DCBX version.
You can view the DCBX version in use through the Oper version field of the DCBX Control subTLV info
part in the output from the display lldp local-information command.
Configuration prerequisites
Before you configure the DCBX version, complete the following tasks:
Enable LLDP globally and configure the interface to advertise DCBX TLVs.
•
Configure the APP parameters, ETS parameters, or PFC parameters to be advertised on the
•
interface.
Configuration procedure
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
interface view.
Command
priority-flow-control no-drop
dot1p dot1p-list
qos trust dot1p
Command
system-view
interface interface-type
interface-number
254
Remarks
By default, PFC is disabled for all
802.1p priorities.
HP recommends that you enable
PFC for the 802.1p priority of
FCoE traffic. If you enable PFC for
multiple 802.1p priorities, packet
loss might occur during periods of
congestion.
By default, the port priority of the
incoming port is trusted.
Remarks
N/A
N/A