Hi

We had the same problem with one of our customers with his Microsoft NLB.

In which configuration does your NLB Cluster work? Unicast? Multicast?

For the Microsoft NLB: The cluster NEVER talks with his virtual MAC address. 
You should put in the cluster members in a seperate vlan and assign the virtual 
MAC address to this vlan, but I am not sure if the B5 supports this. Our 
customers core switches are N-Serie's there you can configure this.




Mit freundlichen Grüßen / Best regards

Rainer ADAM
System Engineer


Imtech ICT Austria GmbH
Guglgasse 15
Bauteil 3, 4. Stock
A-1110 Wien

T: +43 51715 4830
F: +43 51715 99 4830
M: +43 664 851 4830
[email protected]

[Beschreibung: https://webmail.imtech.at/logos/imtech.jpg]

Imtech ICT Austria GmbH
Infrastructure Services

www.imtech-ict.at<http://www.imtech-ict.at/>

Von: POVEDA SANCHEZ, WENCESLAO [mailto:[email protected]]
Gesendet: Freitag, 27. April 2012 10:46
An: Enterasys Customer Mailing List
Betreff: [enterasys] Still with NLB

Hi all,

Sometime ago I made some questions about configuring a B5G stack to work 
against a NLB cluster from TMG, only switching (Thanks Sylvain, Markus and 
everyone who helps me).
Now I have to enable routing on that B5G so, of course, I have another problem.
I'm configuring static routes. If I put as gateway to a network the virtual ip 
(VIP) of the NLB latency grows incredibly, so performance is quite poor.
I'm forced to config as gateway the dedicated IP of one of the NLB nodes, 
disabling NLB on the other machine.
This is the routing config:

!
ip route 10.1.0.0 255.255.0.0 192.168.7.3
!
interface vlan 20
ip address 192.168.7.10 255.255.255.0
no shutdown
interface vlan 200
ip address 192.168.249.254 255.255.255.0
no shutdown
!
arp 192.168.7.1 03BF.C0A8.0701
!

On the switching side I have "set mac multicast" config pointing to ports where 
TMG servers are connected.

Thanks



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