Re: Two NLB Clusters on Same Subnet Causing Network Problems

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From: JBailey (abc_at_123.com)
Date: 04/15/04 

Date: Thu, 15 Apr 2004 16:58:34 -0500

I am pretty sure you are not correct in your assumption of what unicast and
multicast mean. Unicast and multicast in network environments mean the
follwoing:

    Multicast - sending out a stream of data to multiple clients
    Unicast - communication between a single sender and single sender, a one
to one mapping for each client

These two things have nothing to do with weather or not you have one or two
NICs in your server, or weather or not your admin and lb nics are on the
same logical network.

"Rodney R. Fournier [MVP]" <rod@mvp.die.spam.die.nw-america.com> wrote in
message news:upfN8IyIEHA.2948@TK2MSFTNGP11.phx.gbl...
> If I am reading you correctly, you have two NICs in each machine. One for
> the VIP and one NIC for the Admin LAN. You should be configured as
Unicast.
>
> Uni means one, since each NIC has only one IP addr, that means UNI.
>
> If you were to put the Admin IP addr and the VIP addr on the same NIC,
you
> would need to be configured as Multicast. Multi means more then one IP :)
>
> Make sense?
>
> Cheers,
>
> Rod
>
> "JBailey" <abc@123.com> wrote in message
> news:ucX2nByIEHA.3968@TK2MSFTNGP12.phx.gbl...
> > Heres the deal. Our remote offices, of which there are 33 each have
about
> 50
> > clients. When these client machines were originally deployed DNS was not
> in
> > use, and as it usually goes, is still not in use today. The clients all
> have
> > imaged machines which were deployed with a shortcut to the internal web
> > page, and have thin clients which have a hard coded ip to connect to our
> > load balanced terminal servers, so segmenting these clusters into two
> > seperate vlans is not possible at this point. As for the admin NICs,
they
> > are NOT in the same network as the load balanced NICs.
>
>

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