Servers with two NICS and two networks

by **c3Zlcm5l** » Thu, 14 Jan 2010 02:24:01 GMT

I have 8 servers with 100 desktops attached.  The servers connect to a 1gb 
switch that feeds all the desktops.  There is a firewall attached to the 
switch that provides Internet connection.  All pretty standard stuff = IP is 
10.10.1.0 to 10.10.5.0 with mask of 255.255.252.0.   

I have a tape drive in one server that backs up data from the other servers. 
 Since all the servers have two NICs, I was hoping I could setup a separate 
address range for those NICs and let the backup use that NIC and not flood 
the other with traffic.  

I can set the second NICs to be 172.16.1.1 172.16.1.250 range with mask of 
255.255.255.0.  I would put in a new 1gb switch that just connects the second 
NICs (switch is cheap enough and no need to burden other switch with VLANs).  

What would I need to also configure on the servers so it knows that traffic 
destined for the other servers use the 172.16.x.x range and not the 10.10.x.x 
range?  What other settings do I need to know about?  

Is this config going to make a difference in inter-server communication 
(speed)?

by **Ace Fekay [MVP-DS, MCT]** » Thu, 14 Jan 2010 13:24:44 GMT

"Phillip Windell" < XXXX@XXXXX.COM > wrote in message
news:% XXXX@XXXXX.COM ...

Phil,

My blog has a compiled synopsis of multihomed domain controllers
(implications, why it happens and options to alter the DCs to make it work).
I hope the original poster, "sverne" finds it helpful.

Multihomed DCs with DNS, RRAS, multiple IPs, and/or PPPoE adapters
http://msmvps.com/blogs/acefekay/archive/2009/08/17/multihomed-dcs-with-dns-rras-and-or-pppoe-adapters.aspx

--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.

Ace Fekay, MVP, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services

If you feel this is an urgent issue and require immediate assistance, please
contact Microsoft PSS directly. Please check http://support.microsoft.com
for regional support phone numbers.

by **Phillip Windell** » Thu, 14 Jan 2010 23:40:02 GMT

Yea, I need to add that link to my list and include it i posts like that.


-- 
Phillip Windell

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------

by **Ace Fekay [MVP-DS, MCT]** » Fri, 15 Jan 2010 00:48:46 GMT





Thanks. I may update it adding the links you supplied to the Related LInks 
section. Thanks for posting those links, too. :-)

Ace

by **Phillip Windell** » Sat, 16 Jan 2010 01:58:04 GMT

Here's a few more that are "semi" related.  They have to do with when you 
might want multiple Default Gateways in a "correct" situation.  Not saying 
that I would like the scenario, but just being honest in that it does exist.

Load balance two Internet connections
 http://www.**--****.com/ 

128978 - Dead Gateway Detection in TCP/IP for Windows NT
 http://www.**--****.com/ ;EN-US;128978

171564 - TCP/IP Dead Gateway Detection Algorithm Updated for Windows NT
 http://www.**--****.com/ ;EN-US;171564


Then there is this one:

An explanation of the Automatic Metric feature for Internet Protocol routes
 http://www.**--****.com/ 

People might find them useful I guess.
Some are old,..don't know when MS might rearange things and break the links.

-- 
Phillip Windell

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------

by **Ace Fekay [MVP-DS, MCT]** » Sun, 17 Jan 2010 11:05:06 GMT





Some of them only apply to a non-server, such as 299540. That would be 
helpful in those cases. I usually try to steer away from multihoming 
anything unless I have to, but as a rule, never a DC.

Ace

Servers with two NICS and two networks

Servers with two NICS and two networks

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