Basic GSLB for IPv6 configuration | 2 |
Site ServerIron ADX configuration
Enabling the GSLB protocol
The GSLB protocol is disabled by default on site ServerIron ADX switches. You must enable the GSLB protocol on each site ServerIron ADX switch and configure the IP addresses of the site ServerIron ADX switches on the GSLB ServerIron ADX to enable the GSLB ServerIron ADX to establish communication with the site ServerIron ADX switches.
To enable the GSLB protocol on the site ServerIron ADXs, enter the following command:
ServerIronADX(config)#gslb protocol
Syntax: [no] gslb protocol
The ServerIron ADX uses TCP port 182 for the GSLB protocol by default. You can change the port number if needed. Refer to “Changing the protocol port number” on page 29.
You also can secure access to a ServerIron ADX by configuring Access Control Lists (ACLs). For example, you can configure ACLs to control access to the device on TCP port 182. See the “Access Control Lists (ACLs)“ chapter of the ServerIron ADX Security Guide.
Basic configuration example
The following procedure demonstrates the configuration of a GSLB ServerIron ADX for performing IPv6 GSLB. The configuration describes to the example shown in Figure 12 on page 195.
Configuration on GSLB ServerIron ADX (GSLB controller)
First, configure a virtual IP address to represent the authoritative DNS server (ADNS) for the domain. Although you do not need a real DNS server when you configure the GSLB ServerIron ADX as a DNS cache proxy with DNS override, you still need to configure a virtual IP address for the ADNS. Clients send queries to the virtual IP address.
1.To add a virtual IP address to which the clients can send their DNS queries, enter a command such as the following:
ServerIronADX(config)# server
The command adds IP address 2001:DB8::200 as a virtual server, the ADNS. When clients send their DNS queries to this address, the GSLB controller processes the queries.
NOTE
The DNS VIP can also be IPv4 address.
2. Enable DNS cache proxy mode with DNS override mode:
ServerIronADX(config)# gslb policy
In a DNS cache proxy with DNS override configuration, GSLB ServerIron ADX (the GSLB controller) itself acts as the authoritative DNS server for the configured zones. The gslb policy command changes the CLI to the GSLB policy configuration level.
ServerIron ADX Global Server Load Balancing Guide | 201 |
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