R2511-HP MSR Router Series ACL and QoS Configuration Guide(V5)

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PPPoA, PPPoEoA, PPPoFR, or MPoFR (frame relay traffic shaping is not enabled on the frame relay
interface).
Configuration example
# Set the FIFO queue size to 100.
<Sysname> system-view
[Sysname] interface ethernet1/1
[Sysname-Ethernet1/1] qos fifo queue-length 100
Configuring PQ
You can define multiple rules for a priority queue list (PQL) and apply the list to an interface or PVC.
When a packet arrives at the interface or PVC, the system matches the packet with each rule in the order
configured. If a match is found, the packet is assigned to the queue and the match procedure is complete.
If the packet cannot match any rule, the packet is assigned to the default queue normal.
Configuration restrictions and guidelines
• PQ applies to all physical interfaces except interfaces using the X.25 or LAPB protocol at the data
link layer.
• You must enable the rate limit function for the queuing function to take effect on these interfaces:
tunnel interfaces, subinterfaces, HDLC link bundle interfaces, and VT/dialer interfaces configured
with PPPoE, PPPoA, PPPoEoA, PPPoFR, or MPoFR (frame relay traffic shaping is not enabled on the
frame relay interface).
Configuration procedure
You can configure PQ by applying a PQ list to an interface or PVC. For an interface or PVC, the latest
applied PQ list overwrites the previous one.
To configure PQ:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Configure a PQ list.
• qos pql pql-index protocol ip [ queue-key
key-value ] queue { bottom | middle |
normal | top }
• qos pql pql-index inbound-interface
interface-type interface-number queue
{ bottom | middle | normal | top }
Use a command as
needed.
3. Specify the default queue
for the PQ list.
qos pql pql-index default-queue { bottom |
middle | normal | top }
Optional.
This command specifies
the queue to which
unmatched packets are
assigned.
4. Set the queue size.
qos pql pql-index queue { bottom | middle |
normal | top } queue-length queue-length
Optional.