ServerIron ADX Server Load Balancing Guide
Release 12.0.00
June 15, 2009

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Stateless Server Load Balancing

Stateless Server Load Balancing
This chapter contains the following sections:
This chapter describes Server Load Balancing configuration options that are “stateless”. Stateless SLB does not use session table entries for the TCP and UDP sessions between the ServerIron ADX and clients or real servers.
These configuration options are useful if you want to deploy multiple ServerIron ADXs to provide service for the same VIPs or applications but the network topology cannot ensure that server responses will pass back through the ServerIron ADX.
NOTE: The Direct Server Return (DSR) feature allows you to deploy a single ServerIron ADX in a network where the server responses do not pass back through the ServerIron ADX. Compare the configuration example for SwitchBack with the examples in this chapter to determine which type of configuration is applicable to your network. See “DSR”.
NOTE: ServerIron ADX does not support Stateless SLB with aliased ports, such as shown in the following configuration:
server virtual-name-or-ip v3 10.176.7.23
port dns
port dns stateless
bind dns rs1 7777 real-port dns

Stateless Server Load Balancing

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