Nortel Web OS 10.0, Application Manual

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Web OS 10.0 Application Guide
Chapter 12: Global Server Load Balancing
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212777-A, February 2002
4. On the California switch, define a virtual server.
All client requests will be addressed to a virtual server IP address defined on the switch. Cli-
ents acquire the virtual server IP address through normal DNS resolution. HTTP uses well-
known TCP port 80. In this example, HTTP is configured as the only service running on this
virtual server IP address and, is associated with the real server group. For example:
N
OTE
– This configuration is not limited to HTTP services. For a list of other well-known
TCP/IP services and ports, see Table 6-3 on page 128 .
5. On the California switch, define the type of Layer 4 traffic processing each port must
support.
In this example, the following ports are being used on the Web switch:
The ports are configured as follows:
6. On the California switch, enable SLB.
>> Real server group 1# ../virt 1
(Select virtual server 1)
>> Virtual server 1# vip 200.200.200.1
(Assign a virtual server IP address)
>> Virtual Server 1# service 80
>> Virtual server 1 http Service# group 1 (Associate virtual port to real group)
>> Virtual server 1 http Service# ../ena (Enable virtual server)
Table 12-2 GSLB Example: California Alteon 180 Port Usage
Port Host Layer 4 Processing
1 Server A Server
2 Server B Server
6 Default Gateway Router. This connects the switch to the Internet
where all client requests originate. Client
>> Virtual server 1# /cfg/slb/port 1 (Select physical switch port 1)
>> SLB port 1# server ena (Enable server processing on port 1)
>> SLB port 1# ../port 2 (Select physical switch port 2)
>> SLB port 2# server ena (Enable server processing on port 2)
>> SLB port 2# ../port 6 (Select physical switch port 6)
>> SLB port 6# client ena (Enable client processing on port 6)
>> SLB port 6# /cfg/slb
(Select the SLB Menu)
>> Layer 4# on
(Turn SLB on)