Tuning the ISP link availability testing

  • Article

Here is an example script snippet that demonstrates how to use the Forefront TMG admin COM to configure the ISP link test intervals and how many failures/successes determine whether a link is unavailable or available. All intervals are in seconds.

' Getting the ISP Redundancy configuration object
set root=CreateObject("FPC.Root")
set arr=root.GetContainingArray()
set ExtNet=arr.NetworkConfiguration.Networks("External")
set ISPRCfg=ExtNet.ISPRedundancyConfig

' Setting interval between tests when link is available
ISPRCfg.TestIntervalLinkAvailable = 120

' Setting interval between tests when link is unavailable
ISPRCfg.TestIntervalLinkUnavailable = 360

' Setting number of test failures until link detected as unavailable
ISPRCfg.FailuresToUnavailable = 5

' Setting number of test successes until link detected as available
ISPRCfg.SuccessesToAvailable = 7

 

You can download the Forefront TMG SDK here.

 

Evgeny Katz, Forefront TMG Team

Nathan Bigman, Information Experience Team