H3C Technologies H3C S3600 Series Switches - Manual (Page 770)

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Web Cache Redirection Configuration
When configuring Web cache redirection, go to these sections for information you are interested in:
z Web Cache Redirection Overview
z Web Cache Redirection Configuration
z Displaying Web Cache Redirection Configuration
z Web Cache Redirection Configuration Example
Web cache redirection is available on S3600-EI series switches only.
Web Cache Redirection Overview
Usually, users access Web pages through Hypertext Transfer Protocol (HTTP). Typically, users connect
to the Internet through LANs. For LANs containing large amount of users of the Internet, HTTP traffics
may congest the links between the LANs and the Internet and may even affect the operation of other
services. Web cache server can relieve the HTTP load on the links connecting LANs and the Internet
and improve the speed of users’ obtaining information from the Internet.
The Web cache redirection function provided by S3600-EI series Ethernet switches can redirect the
HTTP traffic to Web cache servers, as illustrated in Figure 1-1 .
Figure 1-1 A Web cache redirection implementation
Web Cache Server
Switch
PC 2
Internet
VLAN10
PC 1
VLAN20
VLAN30
VLAN40
Router
As shown in Figure 1-1 , PC 1 and PC 2 are hosts in a LAN connected to the switch, which belong to
VLAN 10 and VLAN 20 respectively. The gateway address of PC 1 is set to the IP address of