Brocade Virtual ADX Global Server Load Balancing Guide (Supporting ADX v03.1.00) - Manual (Page 147)

Brocade Virtual ADX Global Server Load Balancing Guide 137
53-1003245-01
Basic GSLB for IPv6 configuration
2
Site Brocade Virtual ADX configuration
Enabling the GSLB protocol
The GSLB protocol is disabled by default on site Brocade Virtual ADX switches. You must enable the
GSLB protocol on each site Brocade Virtual ADX switch and configure the IP addresses of the site
Brocade Virtual ADX switches on the GSLB Brocade Virtual ADX to enable the GSLB Brocade Virtual
ADX to establish communication with the site Brocade Virtual ADX switches.
To enable the GSLB protocol on the site Brocade Virtual ADXs, enter the following command:
Virtual ADX(config)#gslb protocol
Syntax: [no] gslb protocol
The Brocade Virtual 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 28.
You also can secure access to a ADX device 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 Brocade Virtual ADX Security Guide.
Basic configuration example
The following procedure demonstrates the configuration of a GSLB Brocade Virtual ADX for
performing IPv6 GSLB. The configuration describes the example shown in
Figure 7 on page 130.
Configuration on GSLB Brocade Virtual 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 Brocade Virtual
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:
Virtual ADX(config)#server virtual-name-or-ip dns6-vip 2001:db8::200
Virtual ADX(config-vs-dns-proxy)#port dns
Virtual ADX(config-vs-dns-proxy)#exit
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 an IPv4 address.
2. Enable DNS cache proxy mode with DNS override mode:
Virtual ADX(config)#gslb policy
Virtual ADX(config-gslb-policy)#dns cache-proxy
Virtual ADX(config-gslb-policy)#dns override