Round-trip times

1

This output shows that the prefix 1.1.0.0, prefix length = 20 was created due to an active RTT update from the Site ServerIron ADX. The primary RTT reported for this prefix by Site ServerIron ADX 1.1.1.115 is 2000 usec, the source is active RTT gathering and the probe method is DNS. The backup RTT is 1600usec and the method is ICMP probes.

The output of the command has been enhanced to also display the following:

Prefix Source

The source of an RTT entry can be active, passive, or unknown

The method of gathering shows the type of probe used: ICMP, DNS, or not applicable

The primary and backup RTT values. A value that appears for the backup RTT is of significance only if the fallback mechanism is configured on the GSLB ServerIron ADX.

Whether or not the probe was successful.

This field...

Displays...

 

 

Prefix length

The length of the prefix

 

 

Prefix source

Displays why the prefix entry was created

 

 

region

Geographic region for the prefix

 

 

Site

Name of the Site ServerIron ADX

 

 

ServerIron ADX

IP address of the Site ServerIron ADX

 

 

rtt

The primary RTT reported for the prefix in usec.

 

 

*

The source of an RTT entry (denoted by *) for a prefix. Source can be

 

one of the following:

 

A = Active

 

P = Passive

 

U = Unknown

 

 

>

The method of gathering the RTT is displayed in the output. The

 

method can be:

 

I = ICMP probe

 

D = DNS probe

 

N = Not applicable

 

 

backup rtt

The backup RTT reported for the prefix in usec.

 

This value is significant only if the fallback mechanism is configured

 

on the GSLB ServerIron ADX.

 

 

( )

Result of the RTT probe:

 

OK: RTT probe is successful

 

FAL: RTT probe has failed or RTT to the LDNS server is

unavailable

ServerIron ADX Global Server Load Balancing Guide

155

53-1002437-01

 

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