2 NICs, 2 vlans, 1 server

[six3077]

Having the following issue:

Attempting to connect nics on a dell 1950 to seperate vlans.

Current: 1st NIC is statically assigned 192.168.10.x /24 address, gateway is on same range. Connected to vlan1


(disabled)2nd Nic statically assigned address in 192.168.0.x /24
gateway is on same range. Connect to vlan2

When 2nd NIC is enabled, the server stop responding altogether. Loopback work but reaching either gateway does not.

This has worked on 4 other identical servers with the exact same O/S version, same NICs, same NIC drivers, same service packs.

Any ideas what the issue could be?
Thanks

 

[Lemon13]

make sure you have the TCP/IP NetBIOS helper
service running. Disabling that service seems to affect how RPC traffic is routed

http://www.windowsnetworking.com/articles_tutorials/Optimize-Network-Connections-Windows-XP.html

http://support.wftx.us/Multihomed_Reg_Fix.txt

M. Knorr

MCSE, MCTS, MCSA, CCNA

 

[TheLad]

You should not have more than one default gateway on the server, you will have to add a static route to route the traffic for the 2nd NIC

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"Insert funny comment in here!"
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[itsp1965]

In addition to what The Lad said, I have seen issues accessing the server via TS when there is an overlap in IP Subnets on two different NICS (such as your case). I would limit the range of IPs on each interface based on the subnet mask so there is no overlap

 

[Lemon13]

itsp1965, where is a overlap here?
2 subnets 192.168.10.x /24 and 192.168.0.x /24

M. Knorr

MCSE, MCTS, MCSA, CCNA

 

[six3077]

Thanks for the replies.

The 2 servers are identical in builds and function.

TheLad, There was no problem on the 1st server having a different gateway on each NIC.

I should have checked this before, but I think I found the problem: RRAS

When confirming Windows firewall was not on by mistake, I received the following message:
Windows Fireall cannot run because another program or server is running that might use the network address translation component (Ipnat.sys)

Now I just need to find out who configured this and why.

Thanks again for the replies. I will add to this thread if this is not the issue.