1 Smoothing mechanism for RTT measurements

Syntax: enable-site-rtt-smoothing

Disabling enhanced RTT smoothing

To disable enhanced RTT smoothing for a GSLB Site, enter commands such as the following:

GSLB-ServerIronADX# configure terminal GSLB-ServerIronADX(config)# gslb site sanjose

GSLB-ServerIronADX(config-gslb-site-sanjose)# disable-site-rtt-smoothing

Syntax: disable-site-rtt-smoothing

This command disables enhanced RTT smoothing for the specified site. If the feature is enabled globally, you can disable it for a particular site using this command.

Configuring the parameters

Specifying the maximum RTT deviation

If you want to specify the maximum RTT deviation allowed for a site, enter commands such as the following on the GSLB ServerIron ADX.

GSLB-ServerIronADX# configure terminal

GSLB-ServerIronADX(config)# gslb site sanjose

GSLB-ServerIronADX(config-gslb-site-sanjose)# max-rtt-dev-allowed 300

Syntax: [no] max-rtt-dev-allowed <percent>

Enter a value from 50-100000 for <percent>. The default is 400 percent.

Specifying the maximum ignore count

The maximum ignore counter defines how many consecutive very high or very low new RTT samples to ignore before factoring them into the existing RTT value. If you want to specify the max-ignore-count, enter commands such as the following on the GSLB ServerIron ADX.

GSLB-ServerIronADX# configure terminal

GSLB-ServerIronADX(config)# gslb site sanjose

GSLB-ServerIronADX(config-gslb-site-sanjose)# max-ignore-count 6

Syntax: [no] max-ignore-count <value>

Enter a number from 1-20 for <value>. The default is 3.

Specifying the normal ramp factor

The normal ramp factor defines the factor by which a RTT sample in the acceptable range should be factored into the existing RTT value. If you want to specify the normal ramp factor, enter commands such as the following on the GSLB ServerIron ADX.

GSLB-ServerIronADX# configure terminal

GSLB-ServerIronADX(config)# gslb site sanjose

GSLB-ServerIronADX(config-gslb-site-sanjose)# normal-ramp-factor 20

Syntax: [no] normal-ramp-factor <percent>

Enter a value of 1-50 for percent>. The default is 10 percent.

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Brocade Communications Systems 12.4.00 manual Disabling enhanced RTT smoothing, Configuring the parameters