Configuring Load Balancing - Cabletron Systems IA1100 Getting Started Manual

Configuring Load Balancing

Load balancing allows incoming HTTP requests to a company's website to be distributed
across several physical servers. If one server should fail, other servers can pick up the
workload.
This section shows an example of how to configure load balancing on the IA. The
following example shows two physical servers (with IP addresses 10.1.1.2 and 10.1.1.3)
that are mapped to a virtual IP address 207.135.89.16 and virtual port number 80. External
users use the virtual IP address for HTTP and other network services.
Load Balancing
Servers
The following are the basic steps for configuring load balancing on the IA:
1. Create the internal VLAN on which the load balancing servers reside.
The following commands create the IP VLAN 'internal,' which consists of ports gi.1.1
and gi.1.2 (the ports to which the load balancing servers are connected to the IA):
ia(config)# vlan create internal ip id 2
ia(config)# vlan add ports gi.1.(1-2) to internal
2. Create the external VLAN from which users will access the load balancing servers.
The following commands create the IP VLAN 'external,' which consists of the port
gi.4.1 (the port to which users will be connected to the IA):
ia(config)# vlan create external ip id 3
ia(config)# vlan add ports gi.4.1 to external
Internet Appliance 1100/1200 Getting Started Guide
10.1.1.2
1
Tx Link Tx Link
3
Rx AN Rx AN
1
Tx Link Tx Link
1
Rx AN Rx AN
10.1.1.3
Figure 8. Load Balancing Example
Network
2 1
Tx Link Tx Link
Rx AN Rx AN
2 10/100 MGMT 1
Tx Link Tx Link
OK HBT
CONSOLE
Rx AN Rx AN
ERR DIAG
Chapter 4: Configuration
Users
accessing
'www.ctron.com'
at 207.135.89.16:80
2
4
2
2
37