R3303-HP HSR6800 Routers ACL and QoS Configuration Guide

3. Configure the FIFO queue

size.

qos fifo queue-length queue-length

By default:

• The FIFO queue length is

75 for tunnel interfaces,

aggregate interfaces,

and HDLC link bundle

interfaces.

• The FIFO queue length is

1024 for other

interfaces.

You must enable the rate limit function for the queuing function to take effect on these interfaces: tunnel

interfaces, subinterfaces, Layer 3 aggregate interfaces, HDLC link bundle interfaces, RPR logical

interfaces, and VT interfaces configured with PPPoE, PPPoA, or PPPoEoA.

Configuration example

# Set the FIFO queue size to 100.

<Sysname> system-view

[Sysname] interface gigabitethernet1/0/1

[Sysname-GigabitEthernet1/0/1] qos fifo queue-length 100

Configuring PQ

This feature is not supported on SAP modules operating in bridge mode.

You can define multiple rules for a priority queue list (PQL) and apply the list to an interface. 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, Layer 3 aggregate interfaces, HDLC link bundle interfaces, RPR

logical interfaces, and VT interfaces configured with PPPoE, PPPoA, or PPPoEoA.

Configuration procedure

You can configure PQ by applying a PQ list to an interface. For an interface, the latest applied PQ list

overwrites the previous one.

To configure PQ:

Ste

Command

Remarks

1. Enter system view.

system-view N/A