Technical data

Brocade ServerIron ADX Advanced Server Load Balancing Guide 115
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High availability designs with TCS
2
The previous commands configure a virtual IP address (VIP) to take the place of the Proxy IP
address to which some of the client browsers are directing their web requests. The IP address
specified with the server virtual-name-or-ip command is the IP address that is configured as the
proxy on some clients’ web browsers. The port 4199 sticky and port 8080 sticky commands add
the ports and also make them “sticky”. When a port is sticky, once a client session is established
on the port, the ServerIron ADX’s load balancing mechanism (used for the proxy) sends subsequent
packets in the same session to the same cache server. The sticky parameter is not required in this
configuration but it can streamline cache performance by keeping client sessions on the same
cache servers.
The bind commands create table entries in the ServerIron ADX that associate the cache servers
and their HTTP ports with the Proxy VIP.
ServerIronADX(config)#server cache-group 1
ServerIronADX(config-tc-1)#cache-name Cache-Server1
ServerIronADX(config-tc-1)#cache-name Cache-Server2
ServerIronADX(config-tc-1)#write mem
The previous commands add the cache servers to a cache group, then save the configuration
changes to the ServerIron ADX’s startup-config file.
High availability designs with TCS
Layer 3 TCS
The following sections illustrate Layer 3 TCS support in the following configurations:
• “Layer 3 basic TCS configuration” on page 116
• “Layer 3 symmetric active-active HA TCS configuration” on page 117
• “Layer 3 symmetric active-active HA TCS configuration with a remote cache server” on
page 120
• “Layer 3 Symmetric Active-Active HA with TCS” on page 124