Cbq Configuration Example - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
II. Network diagram
ethernet0/0/0
PC1
(1.1.1.2/8)
Figure 3-6 Network diagram for PQ configuration
III. Configuration procedure
Configure the router 3Com1:
# Configure ACL to match the packets from Server and PC1 respectively.
[3Com1] acl number 2001
[3Com1-acl-basic-2001] rule permit source 1.1.1.1 0.0.0.0
[3Com1-acl-basic-2001] quit
[3Com1] acl number 2002
[3Com1-acl-basic-2002] rule permit source 1.1.1.2 0.0.0.0
[3Com1-acl-basic-2002] quit
# Configure the priority-group so that the packets from Server can enter the high queue
for cache and those from PC1 can enter the low queue for cache when the network
congestion happens. The maximum queue length of the high queue should be set to 50
while that of the low queue set to 100.
[3Com1] qos pql 1 protocol ip acl 2001 queue top
[3Com1] qos pql 1 protocol ip acl 2002 queue bottom
[3Com1] qos pql 1 queue top queue-length 50
[3Com1] qos pql 1 queue bottom queue-length 100
# Apply the priority-group 1 on the interface serial 2/0/0
[3Com1] interface serial2/0/0
[3Com1-Serial2/0/0] qos pq pql 1

3.8.2 CBQ Configuration Example

I. Network requirements
As shown in the diagram, Router C sends data streams, which, in terms of DSCP
domain of IP packet, can be grouped into four categories, across Router A and Router
serial1/0/0
FR/X.25/DDN
Quidway1
2M
serial2/0/0
10 M
ethernet
(1.1.1.1/8)
Server
3Com Corporation
Chapter 3 Congestion Management
Quidway2
ethernet0/0/0
ethernet
3-38
PC2