
Enterasys Xpedition User Reference Manual 263
Load Balancing
The network shown in the previous example can be created with the following load-
balance commands:
Session and Netmask Persistence
In the following example, traffic to a company web site (www.enterasys.com) is
distributed between two separate servers. In addition, client traffic will have two separate
ranges of source IP addresses. The same load balancing server will handle requests from
clients of the same source IP subnet address.
Group Name Virtual IP TCP Port
Destination
Server IP
TCP Port
www.computers.com 207.135.89.16 80 S1: 10.1.1.16
S2: 10.1.2.16
80
www.dvd.com 207.135.89.17 80 S1: 10.1.1.17
S2: 10.1.2.17
80
www.vcr.com 207.135.89.18 80 S1: 10.1.1.18
S2: 10.1.2.18
80
www.toys.com 207.135.89.50 80 S1: 10.1.1.50
S2: 10.1.2.50
80
load-balance create vip-range-name mywwwrange 207.135.89.16-207.135.89.50 virtual-port 80 protocol tcp
load-balance add host-to-vip-range 10.1.1.16-10.1.1.50 vip-range-name mywwwrange port 80
load-balance add host-to-vip-range 10.1.2.16-10.1.2.50 vip-range-name mywwwrange port 80
Router
10.1.1.1
10.1.1.2
www.enterasys.com
Web requests
to www.enterasys.com
Virtual IP Address:
207.135.89.16
NAT/
Source
Address:
30.30.10.1/24
Source
Address:
20.20.10.1/24
multiple
proxies
NAT/
multiple
proxies
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