Nortel Networks WEB OS 212777 - Manual (Page 152)

Web OS 10.0 Application Guide
152 n Chapter 6: Server Load Balancing
212777-A, February 2002
Preconfiguration Tasks
1. Enable server load balancing.
2. Configure the four real servers and their real IP addresses.
3. Configure group 1 for UDP and group 2 for TCP.
For more information on configuring health check, see “UDP-Based DNS Health Checks” on
page 233 .
4. Define and enable the server ports and the client ports.
For more information, see Step 6 “Define the port settings.” on page 126 . Some DNS servers
initiate upstream requests and must be configured both as server and client.
>> # /cfg /slb/ena
>> # /cfg /slb/real 20
>> Real server 20 # ena (Enable real server 20)
>> Real server 20 # rip 10.10.10.20 (Specify the IP address)
>> Real server 20 # ../real 21
>> Real server 21 # ena (Enable real server 21)
>> Real server 21 # rip 10.10.10.21 (Specify the IP address)
>> Real server 20 # ../real 22
>> Real server 22 # ena (Enable real server 22)
>> Real server 22 # rip 10.10.10.22 (Specify the IP address)
>> Real server 20 # ../real 26
>> Real server 26 # ena (Enable real server 26)
>> Real server 26 # rip 10.10.10.26 (Specify the IP address)
>> # /cfg/slb/group 1 (Select real server group 1)
>> Real server group 1 # metric roundrobin (Specify the load balancing
metric for group 1)
>> Real server group 1 # health udpdns (Set the health check to UDP)
>> Real server group 1 # add 20 (Add real server 20)
>> Real server group 1 # add 21 (Add real server 21)
>> Real server group 1 # ../group 2
>> Real server group 2 # metric roundrobin (Specify the load balancing
metric for group 2)
>> Real server group 2 # health dns (Set the health check to TCP)
>> Real server group 2 # add 22 (Add real server 22)
>> Real server group 2 # add 26 (Add real server 26)