Brocade Communications Systems 12.4.00 Manual De Usuario

Round-trip times

1

Displaying the active RTT gathering configuration

To view the active RTT gathering configuration parameters, enter the following command.

ServerIronADX# show gslb active-rtt-info

Controller Information:

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-----------------------



 Active RTT gathering: ENABLE

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 Discard Passive RTT recvd. from agent: DISABLE

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 Interval to send active rtt query buffer to agent = 60 sec

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 DNS probe = Disable, Fallback=Disable

Agent Information:

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------------------



 Num active RTT peers = 1

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 Num passive RTT peers = 0

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 Agent active rtt cache interval = 600 sec

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 Agent active rtt refresh interval = 600 sec



 Num valid prefixes in agent active rtt tree = 0

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 Interval to send gathered active rtt to controller = 60 sec

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 Disable passive RTT gathering on agent: NO

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 Num RTT queries in progress = 0

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 Fast age on ICMP RTT probe fail = 0

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 Agent DNS prober = DISABLE

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 DNS probe port: configured = 9990, in-use = 9990

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 Num DNS RTT queries in progress = 0

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 Fast age on DNS RTT probe fail = 0

Syntax: show gslb active-rtt-info

In the sample output above, the ServerIron ADX is both a GSLB ServerIron ADX as well as a Site 
ServerIron ADX. If the ServerIron ADX is a GSLB ServerIron ADX, information only for the GSLB 
controller will be displayed. Likewise, if the ServerIron ADX is only a Site ServerIron ADX, only 
information for the Agent will be displayed. 

 

TABLE 9

Show GSLB active RTT information 

This field...

Displays...

Controller

This area shows information about the GSLB ServerIron ADX. 

Active RTT gathering

State of active RTT gathering mechanism on the GSLB ServerIron 
ADX: Enabled or Disabled. 

Discard Passive RTT recvd. from agent

Shows the GSLB ServerIron ADX is configured to discard any passive 
RTTs received from Site ServerIron ADXs.

Interval to send active rtt query buffer to 
agent

The interval at which the GSLB ServerIron ADX sends query buffer 
containing LDNS prefixes to Site ServerIron ADXs.

DNS probe

Indicates if controller has been configured to accept RTT 
information gathered using DNS probes.
Possible values: ENABLE or DISABLE

Fallback

Indicates if fallback mechanism has been enabled on the controller. 
If enabled, controller will use DNS RTT information. If this is not 
available, it will use ICMP RTT information. If disabled, controller will 
only use ICMP RTT information.

Agent

This area shows information about the Site ServerIron ADX. 

Num active RTT peers

Number of passive RTT GSLB ServerIron ADXs for which this 
ServerIron ADX is a Site ServerIron ADX.