Brocade Communications Systems ServerIron ADX 12.4.00 - Manual (Page 173)

ServerIron ADX Global Server Load Balancing Guide 161
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GSLB affinity for high availability
1
FIGURE 11 GSLB affinity for HA
ServerIron ADX 1.1.1.102 is a GSLB ServerIron ADX that is providing GSLB for domain
www.foo.com. One of the IP addresses for ww.foo.com is 2.1.1.23.
ServerIron ADX 2.1.1.103 and ServerIron ADX 2.1.1.104 are Site ServerIron ADXs. The GSLB
ServerIron ADX and the Site ServerIron ADXs communicate using the GSLB protocol. ServerIron
ADX 2.1.1.103 and ServerIron ADX 2.1.1.104 are in a high availability configuration. VIP 2.1.1.23 is
configured on ServerIron ADXs 2.1.1.103 and 2.1.1.104.
On the GSLB ServerIron ADX, configure a HA group consisting of ServerIron ADX 2.1.1.103 and
2.1.1.104 as follows.
ServerIronADX# configure terminal

ServerIronADX(config)# gslb ha-group 2.1.1.103 2.1.1.104

ServerIronADX(config)# end
Next, associate an affinity definition for client (or client LDNS) network 2.1.1.0/24 with ServerIron
ADX 2.1.1.104 on the GSLB ServerIron ADX as follows.
GSLB-ServerIronADX(config)#gslb affinity

GSLB-ServerIronADX(config-gslb-affinity)#prefer 2.1.1.104 for 2.1.1.0/24

GSLB-ServerIronADX(config-gslb-affinity)#end
View the configured HA group using the following command.
GSLB-ServerIron ADX#show gslb ha-group-info


Configured GSLB HA groups:

* GSLB HA group: {ServerIronADX 2.1.1.103, ServerIronADX 2.1.1.104}


Virtual IPs for ServerIronADX 2.1.1.103:

2.1.1.23(A)

Virtual IPs for ServerIronADX 2.1.1.104:

2.1.1.23(S)
In this example, VIP 2.1.1.23 is active (A) on ServerIron ADX 2.1.1.103 and standby (S) on
ServerIron ADX 2.1.1.104.
LDNS
2.1.1.53
Clients
GSLB protocol
High Availability
GSLB protocol
GSLB protocol
GSLB
SI 1.1.1.102
SI 2.1.1.104
VIP 2.1.1.23 (S) SI 2.1.1.103
VIP 2.1.1.23 (A)