Specifications

Configuring LSNAT
September 8, 2010 Page 10 of 28
Managing Connections and Statistics
Therearethreeaspectstomanagingconnections:
•ClearingallLSNATcountersandbindingsorselectivelyclearingbindingsbasedonIDor
matchingnetworktupleinformation(sip,sport,dip,dport).
•SettingLSNATlimitsforthenumberofbindings,cachesize,andnumberofconfigurations.
•DisplayingLSNATstatistics.
Configuring UDP-One-Shot
ManyUDPapplicationssendonlytwopacketsintheformofarequestandareply.Forsuch
applicationsitisawasteofresourcestosetupanewbindingandhardwareconnectionforevery
requestandthenleteachbindingidleageout.WithUDP‐one‐shotconfigured,a
bindingis
createdandtherequestpacketissent.Thereceptionofareplypacketbackcausesthebindingto
bedeletedwithinonesecond.BindingscreatedbyUDP‐one‐shotwillnotresultintheinstallation
ofahardwareconnection.
Usetheudp‐one‐shotcommandinSLBvirtualserver
configurationcommandmodetoenable
UDP‐one‐shotonavirtualserver.
Configuring LSNAT
ThissectionprovidesdetailsfortheconfigurationofLSNATontheEnterasysS‐Seriesand
N‐Seriesproducts.
Table 1listsLSNATparametersandtheirdefaultvalues.
Table 1 Default LSNAT Parameters
Parameter Description Default Value
Port Number (FTP) The port number for the FTP control
port for all virtual servers.
21
Predictor The load balancing algorithm for this
server farm.
Round Robin
Faildetect Type Method used to determine the state of
a real server.
Ping
Ping Interval The ICMP Ping failure detection
interval.
5 seconds
Ping Retries The number of times an ICMP ping
failure will result in a retry.
4
application failure
interval
Specifies an application failure
detection interval in seconds.
15 seconds
application failure retries Specifies the number of times a TCP
application failure will result in a retry.
4
Failure Detection
Application
Application port monitoring faildetect
type.
TCP