Brocade Communications Systems 12.4.00 manual Displaying the default Gslb policy

Displaying GSLB information 1

Displaying the default GSLB policy

To display the default GSLB policy, enter the following command.

ServerIronADX(config)# show gslb default Default metric order: ENABLE

Metric processing order:

1-Server health check

2-Remote ServerIronADX's session capacity threshold

3-Round trip time between remote ServerIronADX and client 4-Geographic location

5-Remote ServerIronADX's available session capacity

6-Server flashback speed

7-Least response selection

DNS active-only: DISABLE DNS best-only: DISABLE DNS override: DISABLE

Modify DNS response TTL: ENABLE

DNS TTL: 10 (sec), DNS check interval: 30 (sec)

Remote ServerIronADX status update period: 30 (sec)

Session capacity threshold: 90%, session capacity tolerance: 10%

Round trip time tolerance: 10%, round trip time explore percentage: 5%

Round trip time cache prefix: 20, round trip time cache interval: 120 (sec)

Flashback appl-level delay tolerance: 10%, TCP-level delay tolerance: 10%

Syntax: show gslb default

This display shows the following information.

TABLE 13	GSLB policy information
This field...		Displays...
Default algorithm		Indicates whether this policy is in effect. The value can be one of the following:
		•	Disable
		•	Enable
		If the state is Disable, then a user-configured policy is in effect instead.
Metric processing order		Indicates the order in which the selection metrics are applied to the server
		addresses in the DNS reply. For information about the metrics, refer to “GSLB
		policy” on page 6.
DNS active-only		Indicates whether the GSLB ServerIron ADX removes IP addresses from the DNS
		response if those addresses fail a health check. This field can have one of the
		following values:
		• DISABLE: The ServerIron ADX does not remove the IP addresses from the
			DNS response.
		• ENABLE: The ServerIron ADX removes IP addresses that fail a health check
			from the DNS response.
DNS best-only		Indicates whether you have configured the ServerIron ADX to remove all IP
		addresses except the “best” address from DNS replies. This field can have one

of the following values:

• DISABLE: The ServerIron ADX does not remove all addresses except the best one.

• ENABLE: The ServerIron ADX removes all addresses except the best one.

NOTE: Even when this feature is enabled, if the GSLB policy does not result in selection of a best address, the DNS reply can still contain more than one address.

For more information, refer to “Removing all addresses except the best address” on page 31.

ServerIron ADX Global Server Load Balancing Guide	175
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