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Does a PC with 2 NICs on different networks cause a loopback or performance problem?
Would a machine configured with two NICs, each configured for a different network but plugged into the same switch via 2 separate cables cause a loop problem or any other network performance problem? This diagram may help illustrate what I mean:
http://img47.imageshack.us/img47/8835/dualnicxr6.jpg
http://img47.imageshack.us/img47/8835/dualnicxr6.jpg
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Definitely not a design idea. This was a machine that was put in our network before I started this job by another company who we send information to through a VPN. Really its just acting as a router.
Here's how a little bit more detailed diagram of what it's being used for:
http://img206.imageshack.us/img206/9828/2nicsxe2.jpg
Our LAN is 192.168.1.0
We send a raw image to the 2 NIC machine from a diagnostic machine. The images are compressed using a proprietary program, then are transported to the remote site via A VPN Tunnel on the 10.10.10.0 subnet. All switches on this network are unmanaged so VLANs have not been manually configured.
@avilov - could you explain to me where to check to see if routing is enabled in XP?
If youre talking about HKEY_LOCAL_MACHINE\SYSTEM\
That is currently set to 0
Honestly we're not experiencing a problem with this particular setup, but we are having users in other areas that are noticing intermittent network performance issues, so I just wanted to rule this out before I continue troubleshooting.