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ISA 2004 EE integrated NLB Array: Master node is running slow-

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ISA 2004 EE integrated NLB Array: Master node is runnin... - 18.Dec.2006 4:07:58 PM   
syedaislam

 

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Joined: 18.Dec.2006
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Hi everyone, we have installed a two nodes ISA 2004 EE integrated NLB cluster array, running on Windows 2003 Standard SP1. The cluster is for forward proxy and caching purpose only. So, there are no server publishing rules or inbound traffic. Each cluster node has two NICs. One NIC is for cluster heartbeat and the other one is connected to Internal network. Internal network is configured as integrated NLB. Configuration Storage server and SQL server is behind the cluster. Cluster nodes, CSS server is connected to the same network switch and with other infrastructure servers in the same VLAN. CARP and Cache is enabled.
Cluster is forwarding all it’s web traffic to another two ISA 2004 standard proxy servers in the DMZ [Web Chaining- upstream proxy 1 and 2]. All looks OK. Intra-array communication and NLB convergence is fine. Cluster is balancing the web traffic evenly. But when both node’s NLB services are running web connection traffic is extremely slow. Only when we are disabling ‘Network Load Balancing’ service on the master node [node host ID 2] web traffic is becoming normal. 50% of our web traffic SSL. Cluster is running in Single Affinity and with default port rules.
Please help!
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