I have a 2008 standard server running SQL that I want to add a NIC so I can attach to our iSCSI SAN. When I enable the second NIC I am unable to ping the primary NIC. My LAN is 192.168.1.X 255.255.255.0 DG 192.168.1.254 iSCSI LAN 192.168.130.X 255.255.255.0 Here is the route print before =========================================================================== Interface List 10 ...00 21 9b 8d 35 03 ...... Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Cl ient) 11 ...00 21 9b 8d 35 05 ...... Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Cl ient) #2 16 ...90 e2 ba 1f 23 bd ...... Intel(R) Gigabit ET Dual Port Server Adapter #2 1 ........................... Software Loopback Interface 1 12 ...00 00 00 00 00 00 00 e0 isatap.{55080877-88C9-41B2-9EF3-A035CE9D21A9} 13 ...00 00 00 00 00 00 00 e0 isatap.{F5714D4A-99EA-44A0-8D0D-620F574FF75B} 17 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3 25 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #5 =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.254 192.168.1.16 266 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.1.0 255.255.255.0 On-link 192.168.1.16 266 192.168.1.16 255.255.255.255 On-link 192.168.1.16 266 192.168.1.255 255.255.255.255 On-link 192.168.1.16 266 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.1.16 266 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.1.16 266 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 0.0.0.0 0.0.0.0 192.168.1.254 Default =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 10 266 fe80::/64 On-link 10 266 fe80::d472:e376:724a:64ff/128 On-link 1 306 ff00::/8 On-link 10 266 ff00::/8 On-link =========================================================================== Persistent Routes: None Here is the route print after enabeling the card =========================================================================== Interface List 10 ...00 21 9b 8d 35 03 ...... Broadcom BCM5708C NetXtreme II GigE (NDIS VBD ient) 11 ...00 21 9b 8d 35 05 ...... Broadcom BCM5708C NetXtreme II GigE (NDIS VBD ient) #2 14 ...90 e2 ba 1f 23 bc ...... Intel(R) Gigabit ET Dual Port Server Adapter 16 ...90 e2 ba 1f 23 bd ...... Intel(R) Gigabit ET Dual Port Server Adapter 1 ........................... Software Loopback Interface 1 12 ...00 00 00 00 00 00 00 e0 isatap.{55080877-88C9-41B2-9EF3-A035CE9D21A9} 13 ...00 00 00 00 00 00 00 e0 isatap.{F5714D4A-99EA-44A0-8D0D-620F574FF75B} 17 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3 23 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #4 25 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #5 =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.254 192.168.1.16 266 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.1.0 255.255.255.0 On-link 192.168.1.16 266 192.168.1.16 255.255.255.255 On-link 192.168.1.16 266 192.168.1.255 255.255.255.255 On-link 192.168.1.16 266 192.168.130.0 255.255.255.0 On-link 192.168.130.5 606 192.168.130.5 255.255.255.255 On-link 192.168.130.5 606 192.168.130.255 255.255.255.255 On-link 192.168.130.5 606 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.1.16 266 224.0.0.0 240.0.0.0 On-link 192.168.130.5 606 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.1.16 266 255.255.255.255 255.255.255.255 On-link 192.168.130.5 606 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 0.0.0.0 0.0.0.0 192.168.1.254 Default =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 10 266 fe80::/64 On-link 14 266 fe80::/64 On-link 14 266 fe80::c166:7cf7:bd23:f590/128 On-link 10 266 fe80::d472:e376:724a:64ff/128 On-link 1 306 ff00::/8 On-link 10 266 ff00::/8 On-link 14 266 ff00::/8 On-link =========================================================================== Persistent Routes: None Thanks for your help Jim Jim

Hi, Thanks for your post. Did you mean that after enable 2^nd NIC, the server loose the connection with LAN 192.168.1.0/24? What server role and special application has been installed on the server? The route table is clean, but you may use tracert command to ensure routing is working. Please also verify that we only set the default gateway on the primary NIC. In addition, temporary disable anti-virus and firewall on the server. Make sure the Primary NIC on top than the Secondary NIC on Network Binding order. How to Troubleshoot Basic TCP/IP Problems http://support.microsoft.com/default.aspx?scid=kb;EN-US;169790 Best Regards, Aiden TechNet Subscriber Support If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.Aiden Cao TechNet Community Support

Yes loose connection with LAN 192.168.1.0/24. Whats interesting is I was connected via RDP and that connection didnt go down but I could not ping the address/ I have already checked binding order, There is only one default gateway, I disabled firewall. This is only a SQL server no other services being provided, except I guess IIS for report services. I will try the tracert and disabling the virus software. Jim

When both NICs are enabled From ther server I can still ping gateway and all computers on 192.168.1.0/24 Howerver From another machine on that network I can not ping 192.168.1.16 I turned off virus scanning and no change. I ran diagnostics on primary adapter and it reset the adapter and no change Jim

Hi, Sorry for the delay. How are things going? Also check the firewall setting and anti-virus on the client machine. Do you mind also post the ipconfig of the client computer? Best Regards, Aiden TechNet Subscriber Support If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.Aiden Cao TechNet Community Support

I disabled firewall and virus on all machines no affect. ipconfig of client Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : armsolutions.com Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet Physical Address. . . . . . . . . : 00-25-64-8C-60-73 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::a000:9452:bbf9:69ed%10(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.1.58(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : Friday, July 13, 2012 3:27:57 AM Lease Expires . . . . . . . . . . : Saturday, July 21, 2012 3:29:40 AM Default Gateway . . . . . . . . . : 192.168.1.254 DHCP Server . . . . . . . . . . . : 192.168.1.14 DHCPv6 IAID . . . . . . . . . . . : 234890596 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-BD-9C-6A-00-25-64-8C-60-73 DNS Servers . . . . . . . . . . . : 192.168.1.14 192.168.1.10 Primary WINS Server . . . . . . . : 192.168.1.14 NetBIOS over Tcpip. . . . . . . . : Enabled Jim

Hi, Then, please apply the latest update for the NIC driver. You may also temporarily disable TCP Offloading, RSS and TCP Chimney, to see if the issue still persists. Information about the TCP Chimney Offload, Receive Side Scaling, and Network Direct Memory Access features in Windows Server 2008 http://support.microsoft.com/kb/951037 Best Regards, Aiden TechNet Subscriber Support If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here. Aiden Cao TechNet Community Support

Hi, How are things going? I just want to check the status of the issue. If you have any update or concern, please feel free to let us know. Best Regards, Aiden TechNet Subscriber Support If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.Aiden Cao TechNet Community Support