Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

Professional Opinions
Ask a Question
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

troubleshooting Question

Reduce ISA 2006 NLB Failover Time?

Avatar of jmkirshner
jmkirshner asked on
Software FirewallsWindows NetworkingMicrosoft Forefront ISA Server
13 Comments1 Solution1275 ViewsLast Modified:
My question is: How can I reduce the failover time between two ISA servers?

My setup:
I recently installed ISA 2006 EE in an array on 2 x W2K3 R2 SP2 virtual servers (VMWare VI3).  Each virtual server has 2 NICs: one for the Internal Network and one for Intra-Array Network communication. CARP is enabled and NLB is configured in Integrated Mode on the Internal Network. Both servers are CSS's, as is a third server (which is not running ISA services).  ISA is using the Single NIC template. The ISA server's default gateway is a Cisco ASA 5520 (configured for failover).

I configured a client browser's proxy setting with the VIP host name (in DNS) and I can see from the ISA Server Mgmt > Monitoring > Sessions, that both servers are being used.  However, when I shut down one server, failover to the other server takes about 5 minutes.  And failback (when the downed server is restarted) also takes about 5 minutes.  

How can I reduce this failover time?

Thank you in advance,
Avatar of Keith Alabaster
Keith AlabasterFlag of United Kingdom of Great Britain and Northern Ireland imageEnterprise Architect
This problem has been solved!
Unlock 1 Answer and 13 Comments.
See Answers