CAS Array and NLB

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BJ Small

Hello all, not strickly an exchange 2010 question but for any one who has a CAS array definitely related

I am trying to configure a CAS array using NLB. All is configured however we cannot ping the virtual IP from across the switch.

Config is as follows:

Node 1 MEXCASHUB1 NIC 1 PROD = 10.10.10.50 default gateway 10.10.10.1 and NIC 2 NLB 192.168.1.1 no default gateway

Node 2 MEXCASHUB2 NIC 1 PROD = 10.10.10.51 default gateway 10.10.10.1 and NIC 2 NLB 192.168.1.2 no default gateway

DNS record for CAS Array = mailcasarray 10.10.10.100 this is also the info for the NLB VIP

The NLB is up and running and converged

Problem I cannot ping the VIP from the across the switch. I can ping it from each of the nodes in the cluster. But a client device cannot ping. They get destination host unreachable.

What is the best way to resolve this issue?

Thanks
 
E

Ed Crowley [MVP]

It's expected that you can ping the VIP from the nodes since that address gets added to the network configurtion. Do an IPCONFIG /ALL and see.

Can the ping the individual hosts? If not, then maybe your Windows Firewall is blocking PING.

Can you get to the default IIS web page by both hostname and VIP name or IP address?

http://servername

http://load_balanced_VIP_name_or_address

Ed Crowley MVP " There are seldom good technological solutions to behavioral problems."
 
B

BJ Small

from each host in the NLB i can get to the default page, i get an SSL error, but yes i can.

from non-NLB nodes i cannot do any of the above. i think need to add teh Virtual MAC of the NLB to the directly attached switch.
 
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