Routing traffic from one nic to another. Same server, 08r2

May 30, 2013 at 14:40:40
Specs: Server 2008r2
Note: My original post said same server but this is not the case. Two separate servers with identical hardware software config.

We have two 2008r2 SQL servers with two Nics each. Frontend backend configuration. Two of the Nics have 20GB thoughput; and we need to route SQL traffic from the Frontend 20GB nic to the Backend 20GB nic. One 20GB nic on each server.

This SQL network does not need to have to access the Internet. The other two 1GB nics, one on each server, will access the Internet for normal access and traffic.

I would like to separate the SQL traffic, but if this cannot be done or to complicated, then keeping all traffic on the two 20GB nics is an option as well.


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#1
May 31, 2013 at 05:35:40
It's hard to do with windows but you can try to make the backend NIC the default gateway of the front as long as the two NICs are on the same subnet.

How do you know when a politician is lying? His mouth is moving.


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#2
May 31, 2013 at 16:41:53
20gb? typo since you don't mention 10Gbe?

TommiGun your topolgy description is a bit vague. I am going to assume the 1gb nics are on one switch or vlan and the other backend nics are on another.

Given this setup there is no "routing" since you would have two different independent subnets accessing these servers. The "backend" would be accessed from those devices on that subnet. Same would be true for the "frontend".

Perhaps you can clarify a bit what it is you are trying to accomplish and why?


guapo can you explain what you are thinking here?
"you can try to make the backend NIC the default gateway of the front as long as the two NICs are on the same subnet"

Windows will not use both nics. It will only use one if in the same subnet/switch [which is why we do adapter teaming] so this isn't making sense to me.

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#3
May 31, 2013 at 18:57:41
Wanderer, as I said, it's really hard to direct traffic like that in windows. I mentioned the default gateway possibility as a long shot since he didn't need internet access. If you say it won't work, I believe you.

How do you know when a politician is lying? His mouth is moving.


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#4
June 3, 2013 at 10:17:11
Frontend/backend should be using two different subnets and lans. The side with internet would be the only side that has a gateway entry.

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#5
June 3, 2013 at 10:58:42
That makes perfect sense from a security standpoint. The only problem is he didn't seem to be interested in that, hence his question.

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#6
June 4, 2013 at 08:22:59
Really doesn't have anything to do with security. It has to do with networking using two nics not in a team.

Almost seems like the OP is trying to do a SAN with that config but since he has gone AWOL I guess it really doesn't matter.

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