Brocade Communications Systems ServerIron ADX 12.4.00 - Manual (Page 117)

ServerIron ADX Global Server Load Balancing Guide 105
53-1002437-01
Enabling DNS request logging
1
The configuration required for the GSLB distributed health check feature depends on whether the
GSLB ServerIron ADX and the site ServerIron ADX support the distributed health check feature or
not. Refer to the table below for more information on the configuration available and mandated by
the GSLB distributed health check feature.
Disabling the distributed health check feature for an individual site ServerIron ADX
If a site ServerIron ADX does not support the distributed health check feature, and if the GSLB
ServerIron ADX supports the distributed health check feature, then distributed health check
feature should be disabled for that site ServerIron ADX as it does not support distributed health
checking i.e. the GSLB ServerIron ADX still needs to maintain health checks for the host servers
being load balanced by that site ServerIron ADX.
To disable distributed health check feature for an individual site ServerIron ADX, enter commands
such as the following on the GSLB ServerIron ADX, not on the site ServerIron ADX.
GSLB-ServerIronADX(config)# gslb site sunnyvale

GSLB-ServerIronADX(config-gslb-site-sunnyvale)# si-name 1.1.1.107
no-si-dist-health-check
Syntax: [no] si-name [<name>] <ip-addr> no-si-dist-health-check
NOTE
The si-name command also has an optional parameter that specifies the ServerIron ADX’s
preference. This parameter is not related to the distributed health check feature.
Site ServerIron ADX
GSLB ServerIron ADX Distributed health check site ServerIron
ADX Non-distributed health check site
ServerIron ADX
Distributed health check GSLB
ServerIron ADX
•
No mandatory configuration
required.
•
You can configure the health
check status reporting interval.
Refer to
“Configuring the health
status reporting interval” on
page 106 and “Configuring the
agent health report interval” on
page 107.
•
Flashback metric disabled by
default. Do not enable.
•
Mandatory configuration
required to disable distributed
health check for this site
ServerIron ADX. Refer to
“Enabling the distributed
health check feature for an
individual site ServerIron ADX”
on page 106 and “Disabling or
re-enabling distributed health
check”
on page 106.
•
Flashback metric disabled by
default. If you need to enable it,
refer to
“Impact of distributed
health checks on the
Flashback metric”
on page 108
before doing so.
Non-distributed health check GSLB
ServerIron ADX
•
No configuration required.
•
Flashback metric enabled by
default.
•
Neither GSLB ServerIron ADX
nor site ServerIron ADX is
running the 08.1.00S release.
Refer to the relevant release
notes for information.