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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,
Judy
ASKER CERTIFIED SOLUTION
Avatar of Keith Alabaster
Keith AlabasterFlag of United Kingdom of Great Britain and Northern Ireland imageEnterprise Architect
Commented:
This problem has been solved!
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