Re: Two NICs in one machine and same LAN?

From: RQ (r.qian_at_inetmail.att.net)
Date: 07/06/04 

Date: Tue, 6 Jul 2004 16:49:04 -0500

Thanks Kevin, it helps.

"Kevin D. Goodknecht Sr. [MVP]" <admin@nospam.WFTX.US> wrote in message
news:OGmv6$5YEHA.2432@tk2msftngp13.phx.gbl...
> In news:uGiowr5YEHA.2480@tk2msftngp13.phx.gbl,
> RQ <r.qian@inetmail.att.net> posted a question
> Then Kevin replied below:
> > Would you please provide a answer why it's not a good
> > idea?
> Because they are different networks, and should be addressed acordingly.
> Lets say that there is a machine with IP 10.1.1.3, which network provides
> the way to that machine?
> If one is 10.1.1.x and the other is also 10.1.1.x the machine won't know
> which way to go to get to a machine that is on one or the other networks.
> One should be 10.1.1.x and the other could be 10.1.0.x.
> If both NICs are on the same subnet, they should be teamed and would only
> have one IP address for both NICs. If you have two NICs on the same
machine
> with different IP addresses looking at each other (not teamed) only one
will
> get used at a time. Plus, if you have NetBIOS enabled, one of the NICs if
> not both will be disabled due to a NetBIOS name conflict. It is like
having
> to machines on the same Network with the same NetBIOS name.
>
> Suppose a query is sent to DNS for this machine and DNS gives the 10.1.1.1
> address but that address is not on the subnet that has that address?
> Ther is no way for DNS to know which address to give, it will just use
round
> robin. If they are on different subnets, DNS will use Netmask ordering to
> give the correct record. (based on 10.1.1.x or 10.1.0.x)
>
>
>
> --
> Best regards,
> Kevin D4 Dad Goodknecht Sr. [MVP]
> Hope This Helps
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