Alteon Application Switch Operating System Application Guide
Global Server Load Balancing
718 Document ID: RDWR-ALOS-V2900_AG1302
3. On the San Jose Alteon, define each remote site.
When you start configuring at the San Jose site, San Jose is local and Denver is remote. Add and
enable the remote Alteon's Internet-facing IP interface address. In this example, there is only
one remote site: Denver, with an IP interface address of 74.14.70.2. Use the following
commands:
Each additional remote site should be configured in the same manner. You can enable up to 64
remote sites.
4. On the San Jose Alteon, assign each remote distributed service to a local virtual server.
Configure the local San Jose site to recognize the services offered at the remote Denver site. To
do this, configure one real server entry on the San Jose Alteon for each virtual server located at
each remote site. Since there is only one remote site (Denver) with only one virtual server, only
one more local real server entry is needed at the San Jose site.
The new real server entry is configured with the remote virtual server IP address (that is, Alteon
2's VIP address, rather than the usual IP address of a local physical server). Do not confuse this
value with the IP interface address on the remote Alteon.
The
remote parameter is enabled, and the real server entry is added to the real server group
under the local virtual server for the intended service. Finally, since the real server health checks
are performed across the Internet, the health-checking interval should be increased to 30 or 60
seconds to avoid generating excess traffic. The health check interval should also depend on the
number of remote sites. The more remote sites you have, the larger the time interval should be.
For example:
Note: You should note where each configured value originates, or this step can result in
improper configuration.
5. On the San Jose Alteon, define the domain name and hostname for each service hosted on each
virtual server.
In this example, the domain name for Example Inc. is "gslb.example.com," and the hostname
for the only service (HTTP) is "www." These values are configured as follows:
>> # /cfg/slb/gslb/version 2
>> # /cfg/slb/gslb/site 2
(Select Remote Site 2)
>> Remote site 2# name site_2
(Name Remote Site 2)
>> Remote site 2# prima 174.14.70.2
(Define remote interface)
>> Remote site 2# ena
(Enable Remote Site 1)
>> # /cfg/slb/real 2
(Create an entry for Real Server 2)
>> Real server 2# rip 174.14.70.200
(Set remote virtual server IP address)
>> Real server 3# adv/remote enable
(Define the real server as remote)
>> Real server 3# inter 30
(Set a higher health check interval)
>> Real server 3# ena
(Enable the real server entry)
>> Real server 3# /cfg/slb/group 1
(Select appropriate real server group)
>> Real server group 1# add 2
(Add Real Server 2 to the Group 1)
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