Brocade Communications Systems ServerIron ADX 12.4.00 - Manual (Page 218)

206 ServerIron ADX Global Server Load Balancing Guide
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Advanced GSLB configuration for IPv6
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All of these metrics have default values but you can change the values if needed. In addition, you
can disable individual metrics or reorder them. Refer to
“Changing the GSLB policy metrics” on
page 34.
GSLB ServerIron ADX does not currently support the following GSLB policy metrics for IPv6
addresses:
• Active and passive round-trip time
• Connection load
Changing the order of GSLB for IPv6 policy metrics
You can change the order in which the GSLB ServerIron ADX applies the policy metrics.
FlashBack speed Disabled.
The default tolerance is 10%. This
applies to the TCP health check and
application health checks.
When comparing sites based on the
FlashBack speed, the GSLB
ServerIron ADX will prefer one site
over the other only if the FlashBack
speeds differ by more than the
specified tolerance. You also can disable this metric.
You can change the TCP and
application tolerances individually. A
change applies to all the TCP ports
or applications at the remote site.
Refer to
“FlashBack speed metric”
on page 219.
Administrative preference Disabled.
When enabled, the default
preference is 128. The GSLB
ServerIron ADX will prefer the site
with the highest administrative
preference. If you set the preference
for a site ServerIron ADX to 0, the
site is administratively removed
from GSLB selection. You can enable this metric.
On an individual site ServerIron ADX
basis, you can change the
preference from 128 (the default) to
a value from 0-255.
Refer to
“Administrative preference
metric” on page 220.
Least response selection Enabled.
The GSLB controller selects the site
ServerIron ADX that has been
selected less often than others. Not configurable.
Refer to
“Least response selection
metric” on page 221.
Round robin selection Disabled.
When round robin selection is
enabled, the least response
selection metric is disabled. round
robin selection is an alternative to
least response selection. They are
mutually exclusive.
Like least response selection, round
robin selection is a tie breaker, used
only if two or more sites are equal
following comparison against all
other enabled metrics. Not configurable.
Refer to
“Round robin selection
metric” on page 221.
TABLE 18 GSLB policy metrics (Continued)for IPv6
Metric Default Configuration options