Brocade Communications Systems 12.4.00 manual Example configuration

1 Geographic region for a prefix

To view all geographic prefixes on the GSLB ServerIron ADX, enter the following command.

GSLB-ServerIronADX# show gslb cache all geographic user-configured prefix length = 24, prefix = 1.1.1.0, region = EUROPE

prefix source = geographic (user-configured),

prefix length = 24, prefix = 10.10.10.0, region = ASIA prefix source = geographic (user-configured)

The output above shows the IP address prefix, prefix length, the geographic region and source (user-configured). For more examples, refer to “Displaying RTT information” on page 178.

Syntax: show gslb cache all geographic user-configured

Example configuration

In the following example, the GSLB ServerIron ADX provides GSLB for the domain www.gslb1.com. 1. Display the IP addresses for the domain www.gslb1.com, by entering the following command.

ServerIronADX# show gslb dns detail
ZONE: gslb1.com
HOST: www:
(Global GSLB policy)				Flashback		DNS resp.
d
				elay		selection
				(x100us)		counters
*	1.1.1.22: dns real-ip ACTIVE		N-AM	TCP	App	Count (%
				5	16	---
*	10.10.10.200: dns real-ip DOWN		N-AM	--	--	---
*	1.1.1.76: dns v-ip	DOWN	N-AM	--	--	---

	site: local,	weight:	0, ServerIronADX: 1.1.1.102
	session util:	0%,	avail. sessions: 5999976
*	preference: 128		N-AM	0	0	---
	1.1.1.101: dns v-ip	ACTIVE
	Active Bindings: 1		0, ServerIronADX: 1.1.1.102
	site: local,	weight:
	session util:	0%,	avail. sessions: 5999976

preference: 128

As shown in the output, the current geographic location for all the IP addresses in the domain www.gslb1.com is North America (N-AM).

2. Configure the geographic prefix 1.1.1.42/24 and designate Asia as the geographic location.

ServerIronADX# con t

ServerIronADX(config)# gslb policy

ServerIronADX(config-gslb-policy)# geo-prefix 1.1.1.42/24 asia

ServerIronADX(config-gslb-policy)# end

3. To display the contents of the entry, enter the show gslb cache command.

ServerIronADX# show gslb cache 1.1.1.42

prefix length = 24, prefix = 1.1.1.0, region = ASIA prefix source = geographic (user-configured),

4.After you configure a geographic location for the prefix, the GSLB ServerIron ADX updates the geographic location for the IP addresses as explained in the section “How geographic location is determined” on page 129.

5.To view the geographic location of the IP addresses, enter the show gslb dns detail command.

132	ServerIron ADX Global Server Load Balancing Guide
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