Implementing the active bindings metric – Brocade Virtual ADX Global Server Load Balancing Guide (Supporting ADX v03.1.00) User Manual
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Brocade Virtual ADX Global Server Load Balancing Guide
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Configuring GSLB protocol parameters
1
Syntax: show gslb traffic site
This command shows the domains hosted by each site. For each domain name, it shows how much
traffic was sent to each Brocade Virtual ADX in that site, and the total percentage of traffic sent to
the site.
The second example shows the third site.
In the above examples, there are two hosts; a (HTTP) and b (FTP) which belong to the zone b.c.
There are three sites as listed below:
•
Local (weight: 50; Brocade Virtual ADX: 10.1.1.1; VIPs: 10.1.1.180 (HTTP), 10.1.1.181 (HTTP),
10.1.1.121 (FTP)
•
TWO (weight: 50; Brocade Virtual ADX: 10.1.1.2; VIPs: 10.1.1.182 (HTTP), 10.1.1.122 (FTP))
•
THREE (weight: 0; Brocade Virtual ADX: 10.1.1.3; VIPs: 10.1.1.183 (HTTP), 10.1.1.123 (FTP))
The IP resolution for the domain names is as follows:
•
a.b.c.: 10.1.1.180; 10.1.1.181; 10.1.1.182
•
b.b.c.: 10.1.1.121; 10.1.1.122
After making 36 requests for domain "a.b.c.", the distribution was:
•
Site Local got 18 requests (VIP 10.1.1.180 received 9 and VIP 10.1.1.181 received 9)
•
Site TWO got 18 requests (VIP 10.1.1.182 received all 18)
•
Site THREE did not receive any requests because its weight is zero
Implementing the active bindings metric
You can configure a Brocade Virtual ADX to prefer an IP address with the highest number of active
bindings.
Active bindings are a measure of the number of active real servers bound to a Virtual IP address
(VIP) residing on a GSLB site. The GSLB Brocade Virtual ADX uses the Active Bindings metric to
select the best IP address for the client. The VIP with the highest number of active bindings is the
IP address preferred by the Active Bindings metric.
SITE: THREE
* a.b.c
DNS Requests: 36
SI VIP Selection (%)
== === =============
10.1.1.3 10.1.1.183 0 (0 %)
Site Selection for Domain: 0 (0 %)
* b.b.c
DNS Requests: 0
SI VIP Selection (%)
== === =============
10.1.1.3 10.1.1.123 0 (0 %)
Site Selection for Domain: 0 (0 %)