Digisol DG-FS4528P, Management Manual

Page: 843 / 973

C
HAPTER
40 | Class of Service Commands
Priority Commands (Layer 2)
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switchport priority
default
This command sets a priority for incoming untagged frames. Use the no
form to restore the default value.
S
YNTAX
switchport priority default default-priority-id
no switchport priority default
default-priority-id - The priority number for untagged ingress traffic.
The priority is a number from 0 to 7. Seven is the highest priority.
D
EFAULT
S
ETTING
The priority is not set, and the default value for untagged frames received
on the interface is zero.
C
OMMAND
M
ODE
Interface Configuration (Ethernet, Port Channel)
C
OMMAND
U
SAGE
The precedence for priority mapping is IP DSCP, and then default
switchport priority.
The default priority applies for an untagged frame received on a port
set to accept all frame types (i.e, receives both untagged and tagged
frames). This priority does not apply to IEEE 802.1Q VLAN tagged
frames. If the incoming frame is an IEEE 802.1Q VLAN tagged frame,
the IEEE 802.1p User Priority bits will be used.
The switch provides four priority queues for each port. It can be
configured to use strict priority queuing or weighted queuing using the
queue mode command. Inbound frames that do not have VLAN tags are
tagged with the input port's default ingress user priority, and then
placed in the appropriate priority queue at the output port. The default
priority for all ingress ports is zero. Therefore, any inbound frames that
do not have priority tags will be placed in queue 1 of the output port.
(Note that if the output port is an untagged member of the associated
VLAN, these frames are stripped of all VLAN tags prior to transmission.)
E
XAMPLE
The following example shows how to set a default priority on port 3 to 5:
Console(config)#interface ethernet 1/3
Console(config-if)#switchport priority default 5
Console(config-if)#
R
ELATED
C
OMMANDS
show interfaces switchport (685)