Switchport priority default – Brocade Communications Systems Brocate Ethernet Access Switch 6910 User Manual
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Brocade 6910 Ethernet Access Switch Configuration Guide
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Priority Commands (Layer 2)
21
Related Commands
queue mode (420)
show queue weight (423)
switchport priority default
This command sets a priority for incoming untagged frames. Use the no form to restore the default
value.
Syntax
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.
Default Setting
The priority is not set, and the default value for untagged frames received on the interface is zero.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
•
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 eight priority queues for each port. It can be configured to use strict priority
queuing, Weighted Round Robin (WRR), or a combination of strict and weighted queuing using
the
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 2 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.)
Example
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)#
Related Commands