Brocade Communications Systems ServerIron ADX 12.4.00 Manual Manual page 218

2
Advanced GSLB configuration for IPv6
TABLE 18
Metric
FlashBack speed
Administrative preference
Least response selection
Round robin selection
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
page 34.
GSLB ServerIron ADX does not currently support the following GSLB policy metrics for IPv6
addresses:
•
•
Changing the order of GSLB for IPv6 policy metrics
You can change the order in which the GSLB ServerIron ADX applies the policy metrics.
206
GSLB policy metrics (Continued)for IPv6
Active and passive round-trip time
Connection load
Default
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.
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.
Enabled.
The GSLB controller selects the site
ServerIron ADX that has been
selected less often than others.
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.
"Changing the GSLB policy metrics"
ServerIron ADX Global Server Load Balancing Guide
Configuration options
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.
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.
Not configurable.
Refer to "Least response selection
metric" on page 221.
Not configurable.
Refer to "Round robin selection
metric" on page 221.
on
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