3Com Switch 7750 Configuration Guide Guide

636 CHAPTER 58: QOS CONFIGURATION
■ The traffic-based flexible QinQ function is generally configured on the hybrid
port of the edge device connecting the user device to the carrier’s network.
■ QinQ is mutually exclusive with Voice VLAN. That is, you cannot configure both
features on the same port.
■ The port on which the traffic-based flexible QinQ function is configured and
the specified uplink port cannot be in the same aggregation group.
■ Type-A, 3C16863, and 3C16862 I/O Modules do not support the traffic-based
flexible QinQ function.
Configuration Example ■ Ethernet 1/0/1 of the switch is accessed to the 10.1.1.1/24 network segment
■ Tag all the packets from the 10.1.1.1/24 network segment with external VLAN
tags to implement the traffic-based flexible QinQ function
Configuration procedure:
<SW7750> system-view
[SW7750] vlan 25
[SW7750-vlan25] quit
[SW7750] acl number 2000
[SW7750-acl-basic-2000] rule permit source 10.1.1.1 0.0.0.255
[SW7750-acl-basic-2000] quit
[SW7750] interface Ethernet 1/0/1
[SW7750-Ethernet1/0/1] port link-type hybrid
[SW7750-Ethernet1/0/1] port hybrid vlan 25 untagged
[SW7750-Ethernet1/0/1] vlan-vpn enable
[SW7750-Ethernet1/0/1] qos
[SW7750-qoss-Ethernet1/0/1] traffic-remark inbound ip-group 2000
remark-vlan 25 uplink Ethernet 1/0/2 untagged
QoS Configuration
Example
Configuration Example
of TP and Rate Limit on
the Port
Network requirement
The enterprise network interworks all the departments through the ports of the
Ethernet switch. The salary query server of the financial department is accessed
through Ethernet 1/0/1 whose subnet address is 129.110.1.2. The network
requirements are to limit the average rate of outbound traffic within 640kbps and
set the precedence of packets exceeding the specification to 4.