Brocade Communications Systems ServerIron ADX 12.4.00 Manual Manual page 166

1
Round-trip times
TABLE 9
This field...
Num passive RTT peers
Agent active rtt cache interval
Agent active rtt refresh interval
Num valid prefixes in agent active rtt tree
Interval to send gathered active rtt to
controller
Disable passive RTT gathering on agent
Num RTT queries in progress
Fast age on ICMP RTT probe fail
Agent DNS prober
DNS probe port
Num DNS RTT queries in progress
Fast age on DNS RTT probe fail
Displaying the RTT information of a client IP address
The GSLB ServerIron ADX maintains a cache of RTT information received from the site ServerIron
ADXs through the GSLB protocol. You can display the RTT information the GSLB ServerIron ADX has
for a client IP address.
To display the RTT information for a particular client, enter a command such as the following:
ServerIronADX# show gslb cache 1.1.1.42
prefix length = 20, prefix = 1.1.0.0, region = N-AM
prefix source = active-rtt-update,
site = cupertino,
(OK) backup rtt = 16 (x100 usec) (OK)
site = local,
(FAL) backup rtt = 8 (x100 usec) (OK)
Syntax: show gslb cache <ip-address>
154
Show GSLB active RTT information (Continued)
ServerIronADX = (1.1.1.115),
ServerIronADX = (1.1.1.102),
Displays...
Number of active RTT GSLB ServerIron ADXs for which this
ServerIron ADX is a Site ServerIron ADX.
The cache interval for a prefix in the Site ServerIron ADX's active RTT
cache.
The interval at which the Site ServerIron ADX refreshes the RTT
value for LDNS prefixes in its active RTT cache.
Number of LDNS prefixes in the Site ServerIron ADX active RTT
cache.
Interval at which the Site ServerIron ADX reports the actively
gathered RTT to the GSLB controller.
Shows if passive RTT gathering is disabled on the Site ServerIron
ADX.
Number of ICMP RTT probes in progress on the Site ServerIron ADX.
Shows if a LDNS prefix in the Site ServerIron ADX's active RTT cache
is aged out immediately if ICMP probes to that LDNS fail. A value of
1 or greater means that the ICMP probes are aged out immediately.
Indicates if DNS prober is enabled or disabled on the Site ServerIron
ADX.
configured: Indicates the port number configured for sending out
DNS probes
in-use: Indicates the port number being currently used for sending
out DNS probes.
If the configured and in-use values are different, then the DNS
probe port was changed, but the ServerIron ADX has not been
reloaded.
NOTE: DNS probe port command needs a reload to take effect.
Number of DNS RTT probes in progress on the Site ServerIron ADX.
Shows if a LDNS prefix in the Site ServerIron ADX active RTT cache is
aged out immediately when DNS probes to that LDNS fail. A value of
1 or greater means that the DNS probes are aged out immediately.
rtt = 20 (x100 usec) *A
rtt = 65535 (x100 usec) *A
ServerIron ADX Global Server Load Balancing Guide
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