Brocade Communications Systems 12.4.00 Displaying the RTT information of a client IP address

1 Round-trip times

TABLE 9 Show GSLB active RTT information (Continued)

This field...	Displays...
Num passive RTT peers	Number of active RTT GSLB ServerIron ADXs for which this
	ServerIron ADX is a Site ServerIron ADX.
Agent active rtt cache interval	The cache interval for a prefix in the Site ServerIron ADX’s active RTT
	cache.
Agent active rtt refresh interval	The interval at which the Site ServerIron ADX refreshes the RTT
	value for LDNS prefixes in its active RTT cache.
Num valid prefixes in agent active rtt tree	Number of LDNS prefixes in the Site ServerIron ADX active RTT
	cache.
Interval to send gathered active rtt to	Interval at which the Site ServerIron ADX reports the actively
controller	gathered RTT to the GSLB controller.
Disable passive RTT gathering on agent	Shows if passive RTT gathering is disabled on the Site ServerIron
	ADX.
Num RTT queries in progress	Number of ICMP RTT probes in progress on the Site ServerIron ADX.
Fast age on ICMP RTT probe fail	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.
Agent DNS prober	Indicates if DNS prober is enabled or disabled on the Site ServerIron
	ADX.
DNS probe port	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.
Num DNS RTT queries in progress	Number of DNS RTT probes in progress on the Site ServerIron ADX.
Fast age on DNS RTT probe fail	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.

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,			>D
site = cupertino,		ServerIronADX = (1.1.1.115), rtt = 20 (x100 usec) *A
(OK) backup rtt	= 16	(x100	usec) (OK)	>D
site = local,	ServerIronADX = (1.1.1.102), rtt = 65535 (x100 usec) *A
(FAL) backup rtt = 8		(x100	usec) (OK)

Syntax: show gslb cache <ip-address>

154	ServerIron ADX Global Server Load Balancing Guide
	53-1002437-01