3Com 5500G, 4210, 4200G manual WEB Cache Redirection Configuration Guide

228CHAPTER 24: WEB CACHE REDIRECTION CONFIGURATION GUIDE

interface Ethernet1/0/1 port access vlan 10

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interface Ethernet1/0/2 port access vlan 20

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interface Ethernet1/0/3 port access vlan 30

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interface Ethernet1/0/4 port link-type trunk

port trunk permit vlan 1 40 50

webcache address 192.168.4.2 mac 0012-0990-2250 vlan 40

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webcache redirect-vlan 10 webcache redirect-vlan 20 webcache redirect-vlan 30

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Precautions When configuring Web cache redirection, consider the following:

■To ensure the success of Web cache redirection, check that the VLAN-interfaces for all the involved VLANs (VLAN 40, VLAN 10, VLAN 20, and VLAN 30) are up.

■Do not redirect the HTTP packets destined for VLAN 40 to the Web cache server.

■Enabling STP can cause Web cache redirection failure. To avoid this, set the port connected to the Web cache server as a hybrid or trunk port and configure the port to permit the packets of the VLAN for the Internet access service (for example, VLAN 50 in Figure 66).