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6-6 Px Series Application Switch Installation and Configuration Guide
Figure 6-2: Self-identifying cookie persistence mode
The following transactions occur in Figure 6-2:
• The website administrator of www.buystuff.com sets up each web server (server 1,
server 2, and server 3) to create a cookie that contains the real IP address of the web
server.
— Cookies created by server 1 contain IP address 10.1.1.1.
— Cookies created by server 2 contain IP address 10.1.1.2.
— Cookies created by server 3 contain IP address 10.1.1.3.
• The website administrator configures the Px series application switch to use
self-identifying cookie persistence mode.
• The client transmits its first TCP request (A) to www.buystuff.com at its
publicly-known VIP address, 64.1.1.7.
• The Px series application switch responds (B) on behalf of 64.1.1.7, and the three-way
TCP handshake is established between the client and the Px series application
switch.
WS_002
Client
Cookie:
serverip=10.1.1.3
Server 1
10.1.1.1
Server 2
10.1.1.2
Server 3
10.1.1.3
64.1.1.7
www.buystuff.com
A
C
D
B
E
E
F
F