NLB cluster slow incoming transfer speed

I have an NLB cluster. There are two nodes in it - nlbtest1.local (192.168.0.231)  and nlbtest2.local (192.168.0.232) . Cluster domain name is nlbtest, ip 192.168.0.233. Cluster is functioning in mulicast mode. Using Windows explorer I go to \\nlbtest and when I try to upload some file to this resourse speed is 20 KB/s. Download speed is 10 MB/s . When I go to \\nlbtest1 or \\nlbtest2 upload and download speed is ok - about 10 MB/s. What can be the problem?
roma_vtAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

kevinhsiehCommented:
NLB isn't designed for file sharing. File servers should be clustered using failover clustering. That might be part of the issue. What services are you hoping to have on this cluster?
0
roma_vtAuthor Commented:
SMTP server. And when I tried Exchange Hub transport with CAS array on it situation was the same. Sending mail speed was 20 Kbit/s.
0
kevinhsiehCommented:
Have you tried using unicast?

For multicast operation, did you create static arp and cam entries? Unicast is simpler because you don't need to perform special configuration on the network equipment, but you do need 2 NICs per NLB node.
0
The Five Tenets of the Most Secure Backup

Data loss can hit a business in any number of ways. In reality, companies should expect to lose data at some point. The challenge is having a plan to recover from such an event.

roma_vtAuthor Commented:
Thanks, I'll try to use unicast on hardware. But when I tried to use unicast in Hyper-V - it didn't help.

And about multicast. What static arp and cam entries should I create and where? On switch, to which NLB servers are connected?
0
kevinhsiehCommented:
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
roma_vtAuthor Commented:
I used HUB to connect both servers and it resolved my problem=))
0
roma_vtAuthor Commented:
on cisco.com they adviced to use HUB =)
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Server 2008

From novice to tech pro — start learning today.