Displaying affinity selection counters, Gslb domain-level affinity, Overview of gslb domain-level affinity – Brocade Communications Systems ServerIron ADX 12.4.00 User Manual
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ServerIron ADX Global Server Load Balancing Guide
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GSLB domain-level affinity
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Displaying affinity selection counters
You can display the number of times an IP address is selected based on affinity. To display the
information, enter the following command.
ServerIronADX(config)# show gslb dns detail
ZONE: gslb.com
HOST: www:
Flashback DNS resp.
delay selection
(x100us) counters
TCP APP Count (%)
* 1.1.1.101: dns v-ip ACTIVE N-AM 0 0 4 (100%)
site: santaclara, ServerIronADX: 1.1.1.102
session util: 0%, avail. sessions: 5999988
preference: 128
Metric counter (count [selection-metric]):
3[health-check]
Affinity selection count = 1
* 1.1.1.115: dns real-ip DOWN N-AM -- -- 0 (0%)
In the example, IP address 1.1.1.101 has been selected a total of four times as the best IP address;
it has been chosen three times based on the health check metric and once based on affinity as
displayed through the Affinity selection count.
Syntax: show gslb dns detail [<name>]
The <name> parameter specifies a zone name.
GSLB domain-level affinity
This section contains the following sections:
•
“Overview of GSLB domain-level affinity”
•
Overview of GSLB domain-level affinity
Users need the flexibility to associate a different set of affinities with different domains. For
instance, user may want to direct all traffic from 199.239.0.0/24 subnet to ServerIron ADX A for
domain www.times.com but not for another domain www.travel.com configured on the same
controller. User cannot implement this using the existing global affinity definitions which apply to all
the domains.
This document describes a feature called domain-level affinity which will allow the user to
configure domain-level affinity groups and associate these with the desired domains. As a result,
user has the flexibility of specifying different affinities for different domains. We will continue to
support global affinity. We will support 128 domain-level affinity groups. Each domain-level affinity
group can contain different number of affinity definitions as needed but the total number of affinity
definitions across all the groups including global affinity cannot exceed 1024. User may also use all
the 1024 entries just for global affinity definitions or domain-level affinity definitions. User can
associate a domain-level affinity group with multiple domains. Only one domain-level affinity group
can be associated with a domain.