26
Configuring an interface to trust packet priority for
priority mapping
You can configure the device to trust a particular priority field carried in packets for priority mapping
on interfaces or globally.
When you configure the trusted packet priority type on an interface, use the following available
keywords:
•
dot1p
—Uses the 802.1p priority of received packets for mapping.
•
dscp
—Uses the DSCP precedence of received IP packets for mapping.
To configure the trusted packet priority type on an interface:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
3.
Configure the trusted
packet priority type.
qos trust
{
dot1p
|
dscp
}
By default, an interface trusts its port
priority as the 802.1p priority for
mapping.
For an interface to trust a packet priority
of incoming packets on an AC, you must
configure the interface of the AC to trust
the packet priority. For more information
about ACs, see
VXLAN Configuration
Guide
.
An interface on a VXLAN IP gateway
always trusts the DSCP priority in
incoming packets from an AC if the
packets need to be forwarded at Layer
3. If these packets need to be forwarded
at Layer 2, the interface trusts DSCP
priority in incoming packets from an AC
only if the
qos trust dscp
command is
configured.
Changing the port priority of an interface
If an interface does not trust any packet priority, the device uses its port priority to look for priority
parameters for the incoming packets. By changing the port priority, you can prioritize traffic received
on different interfaces.
To change the port priority of an interface:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
Summary of Contents for FlexFabric 5940 Series
Page 23: ...17 Figure 3 QoS processing flow ...
Page 84: ...78 Figure 26 MPLS label structure ...
Page 91: ...85 Switch burst mode enable ...
