Brocade Communications Systems 12.4.00 Manual De Usuario
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ServerIron ADX Global Server Load Balancing Guide
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Configuring GSLB protocol parameters
1
The <tcp-portnum> parameter specifies the TCP port number you want the ServerIron ADX to use
for exchanging GSLB information with other ServerIron ADXs.
for exchanging GSLB information with other ServerIron ADXs.
If you change the GSLB protocol port number, you must write memory and reload the software to
place the change into effect. Also, you must change the port to the same number on all ServerIron
ADXs in the GSLB configuration. If the port number in two GSLB ServerIron ADXs is not the same,
those ServerIron ADXs are not able to properly perform GSLB.
place the change into effect. Also, you must change the port to the same number on all ServerIron
ADXs in the GSLB configuration. If the port number in two GSLB ServerIron ADXs is not the same,
those ServerIron ADXs are not able to properly perform GSLB.
Changing the GSLB protocol update period
The GSLB protocol update period specifies how often the site ServerIron ADXs report their session
table statistics and CPU utilization to the GSLB ServerIron ADX. The default update period is 30
seconds.
table statistics and CPU utilization to the GSLB ServerIron ADX. The default update period is 30
seconds.
By default, each remote ServerIron ADX uses the GSLB protocol to send status information to the
GSLB ServerIron ADX every 30 seconds. The status information consists of session utilization and
CPU load information, which you can display using the show gslb site command (refer to
GSLB ServerIron ADX every 30 seconds. The status information consists of session utilization and
CPU load information, which you can display using the show gslb site command (refer to
You can change the period to a value from 1-300 seconds. The GSLB ServerIron ADX then informs
all the remote ServerIron ADXs of the change.
all the remote ServerIron ADXs of the change.
To change the GSLB protocol update period, enter the following commands on the GSLB ServerIron
ADX.
ADX.
ServerIronADX(config)# gslb policy
ServerIronADX(config-gslb-policy)# protocol status-interval 10
The command changes the GSLB protocol update period to 10 seconds.
Syntax: [no] protocol status-interval <num>
The <num> parameter specifies the number of seconds between status reports and can be from
1-300 seconds. The default is 30 seconds.
1-300 seconds. The default is 30 seconds.
To display the current update period, enter the show gslb policy command. The interval is shown in
the Remote ServerIron ADX status update period field. Refer to
the Remote ServerIron ADX status update period field. Refer to
on page 175 for more information.
Modifying GSLB parameters related to DNS responses
You can modify the following DNS-related GSLB parameters:
•
IP address for a site that fails a health check: refer to
•
IP addresses that pass the health checks but still are not selected as the “best” site: By
default, the ServerIron ADX leaves all the IP addresses in the DNS reply. You can configure the
ServerIron ADX to remove all addresses from the reply except the “best” address. Refer to
default, the ServerIron ADX leaves all the IP addresses in the DNS reply. You can configure the
ServerIron ADX to remove all addresses from the reply except the “best” address. Refer to
•
DNS record verification interval: refer to
•
•
If you prefer to manage the TTL values solely using the DNS server, you can disable TTL
modification on the ServerIron ADX. refer to
modification on the ServerIron ADX. refer to
•
DNS override: refer to