Configuring Priority Queuing - 3Com MSR 50 Series Configuration Manual

Configuring Priority
Queuing
Configuring Priority
Queuing
<Sysname> system-view
[Sysname] interface ethernet1/0
[Sysname-Ethernet1/0] qos fifo queue-length 100
You may define multiple rules for a priority-list group and apply these rules to an
interface. When a packet that needs to be forwarded out the interface arrives at
the interface, the system compares it against the rule chain. If a match is found,
the packet is put into the corresponding queue and the match operation is
complete; if no match is found, the packet is put into the default queue. The
default value for default queue is normal.
The system will match the packets according to the sequence of configured rules.
Once finding the packets match a certain rule, the system will stop searching.
Apply a priority-list group to an interface. For the same interface, the repeated use
of priority queue application command will set a new priority-list for the interface.
Follow these steps to configure PQ:
To do...
Enter system view
Configure priority-list qos pql pql-index protocol ip
Configure default
queue
Configure the length
of queue
Enter interface view
Apply priority-list
Display custom-list
queue application
status on the
interface
n
Except for interfaces encapsulated with X. 25, all physical interfaces can use PQ.
Use the command...
system-view
queue-key key-value queue { bottom |
middle | normal | top }
or
qos pql pql-index inbound-interface
interface-type interface-number queue
{ bottom | middle | normal | top }
qos pql pql-index default-queue
{ bottom | middle | normal | top }
qos pql pql-index queue{ bottom |
middle | normal | top } queue-length
queue-length
interface interface-type
interface-number
qos pq pql pql-index
display qos pq interface
[ interface-type interface-number ]

Configuring Priority Queuing

Remarks
-
Required
Select priority-list
configuration commands
upon your requirements.
Optional
Specify the incoming queue
for packets that do not
match rules.
normal by default.
Optional
The default length of queue:
20 for top, 40 for middle, 60
for normal and 80 for
bottom.
-
Required
Not PQ but FIFO is employed
on the interface by default.
Optional
The display command can
be executed in any view.
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