Brocade Virtual ADX Global Server Load Balancing Guide (Supporting ADX v03.1.00) - Manual (Page 28)

18 Brocade Virtual ADX Global Server Load Balancing Guide
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Proxy for DNS server
1
The commands in this example add a real server called “dns_ns”. The DNS server has IP address
10.157.23.46. When you add the real server, the CLI changes to the Real Server configuration
level. At this level, you can add TCP or UDP ports and, optionally, modify health check parameters.
In this example, the DNS port is added. Notice that the proxy option is specified following the dns
option. The proxy option is required to indicate that this real server is part of a proxy DNS server
configuration.
Virtual ADX(config)#server real-name dns_ns 10.157.23.46
Virtual ADX(config-rs-dns_ns)#port dns proxy
Virtual ADX(config-rs-dns_ns)#exit
The server virtual-name-or-ip command adds a virtual server called “dns-proxy”. This command
changes the CLI to the Virtual Server configuration level. At this level, the port dns command adds
the DNS port to the virtual server. The bind command binds the DNS port on the real server to the
DNS port on the virtual server.
Syntax: [no] server real-name text ip-addr
Syntax: [no] port dns proxy
Syntax: [no] port port [disable | enable]
Syntax: [no] port port [keepalive]
Syntax: [no] server virtual-name-or-ip text [ip-addr]
Syntax: [no] bind port real-server-name port
Enabling the GSLB protocol
For security, remote ADX devices do not listen to TCP port 182 (the GSLB protocol port) by default.
This means the GSLB protocol is disabled on remote site ADX devices by default. For a remote ADX
device to use the protocol, you must enable the protocol on the remote ADX device (not the GSLB
controller).
To enable the GSLB protocol on the site ADX devices, enter the following command.
Virtual ADX(config)#gslb protocol
Syntax: [no] gslb protocol
The ADX device 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 can also 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.
Configuring a site
When you create a site, you give it a name and identify the ADX devices in it. You can also enable
the administrative preference.
To configure the server sites shown in Figure 1 on page 5, enter commands such as the following.