Nortel Networks WEB OS 212777 - Manual (Page 296)

Web OS 10.0 Application Guide
296 n Chapter 12: Global Server Load Balancing
212777-A, February 2002
Task 2: Configure the California Switch for Standard SLB
1. Assign an IP address to each of the real servers in the local California server pool.
The real servers in any real server group must have an IP route to the switch that will perform
the SLB functions. This is most easily accomplished by placing the switches and servers on the
same IP subnet, although advanced routing techniques can be used as long as they do not vio-
late the topology rules outlined in
“Network Topology Requirements” on page 122 .
For this example, the host real servers have IP addresses on the same IP subnet:
2. On the California switch, define each local real server.
For each local real server, you must assign a real server number, specify its actual IP address,
and enable the real server. For example:
3. On the California switch, define a real server group.
Combine the real servers into one service group and set the necessary health checking parame-
ters. In this example, HTTP health checking is used to ensure that Web content is being served.
If the
index.html file is not accessible on a real server during health checks, the real server
will be marked as down.
Table 12-1 GSLB Example: California Real Server IP Addresses
Real Server IP address
Server A 200.200.200.2
Server B 200.200.200.3
>> Default gateway 1# /cfg/slb/real 1 (Server A is real server 1)
>> Real server 1# rip 200.200.200.2 (Assign IP address to server A)
>> Real server 1# ena (Enable real server 1)
>> Real server 1# ../real 2 (Server B is real server 2)
>> Real server 2# rip 200.200.200.3 (Assign IP address to server B)
>> Real server 2# ena (Enable real server 2)
>> Real server 2# ../group 1 (Select real server group 1)
>> Real server group 1# add 1 (Add real server 1 to group 1)
>> Real server group 1# add 2 (Add real server 2 to group 1)
>> Real server group 1# health http (Use HTTP for health checks)
>> Real server group 1# content index.html (Set URL content for health checks)