NIC Selection

[Jeff Vian]

Timothy J. Miller wrote:

>The machine use to be on two networks and was reconfigured.  Don't know
>why it was reconfigured with two cards on the same network but when I
>realized that it was configured this way I figured there maybe a reason.
>Not sure what, but need to ask before I took the interface down.
>
>Thanks
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In my experience and has been mentioned before, 2 nics on the same 
*subnet* are often a problem.  The system has a problem deciding which 
is the actual gate to that subnet and usually causes a lot of hangs and 
slowdown in network communication (if it works at all).

I do not ever recommend that config.

However, I have not seen multiple NICs on the same physical network 
cause a problem as long as the IPs do not cause a subnet conflict.

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>>The routing table.
>>
>>Question:  Why are you using two nics on the same network?  You can
>>generate some very odd network problems doing that.  Routing loops can get
>>created that will send packets around and around your network until they
>>expire from ttl.
>>
>>
>>
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