Brocade Communications Systems ServerIron ADX 12.4.00 - Manual (Page 119)

ServerIron ADX Global Server Load Balancing Guide 107
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Enabling DNS request logging
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To globally configure the health status reporting interval, enter commands such as the following on
the GSLB ServerIron ADX.
GSLB-ServerIronADX(config)# gslb policy

GSLB-ServerIronADX(config-gslb-policy)# health-status-interval 3
Syntax: [no] health-status-interval
The parameter specifies the interval. Range is 2-120 seconds.
Configuring the agent health report interval
If both the GSLB ServerIron ADX and the site ServerIron ADX support the distributed health check
feature, you can configure the interval at which the site ServerIron ADX reports the health check
information to the GSLB ServerIron ADX for the GSLB distributed health check feature. To do this,
enter a command such as the following:
SITE-ServerIronADX(config)# agent-health-report-interval 7
Syntax: [no] agent-health-report-interval
The specifies the interval. Range is 2-120 seconds.
This configuration can be made locally on the individual site ServerIron ADX. If health status
reporting interval is also configured globally on the GSLB ServerIron ADX, then the health status
interval configuration on the individual site ServerIron ADX takes precedence over it for that site
ServerIron ADX. Note that if health status configuration is done neither globally on the GSLB
ServerIron ADX nor locally on an individual site ServerIron ADX, then the site ServerIron ADX reports
the health status information to the GSLB ServerIron ADX at default interval ( i.e. every five
seconds).
Debugging the distributed health check
You can debug the distributed health check feature on the GSLB controller ServerIron ADX, by enter
a command such as the following on the GSLB controller ServerIron ADX.
GSLB-ServerIronADX# debug distributed-hcheck recvd-add-list

GSLB: recvd-add-list-event debugging is on

GSLB-ServerIronADX#Recvd add list msg from peer 192.9.1.1(len = 53)

Recvd add list msg from peer 192.9.1.17(len = 53)
This command displays “health check status report received” event. Whenever a health check
status report is received from a site ServerIron ADX, a debug message is displayed on GSLB
ServerIron ADX indicating the IP address of that ServerIron ADX as well as the length of that health
check status report.
Syntax: debug distributed-hcheck recvd-add-list-event I sent-add-list
The sent-add-list option displays messages about “health check status report sent” events. When
the site ServerIron ADX sends the health check status report to the peer GSLB ServerIron ADX, a
debug message is displayed on the site ServerIron ADX indicating the VIPs that are a part of this
health check status message. These messages help you determine if the site ServerIron ADX is
sending the health check status report at the correct interval and with the correct VIPs.
To display messages about “health check status report sent” events, enter the following command
on the site ServerIron ADX. T