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Fault tolerance configuration with 2 NIC

Posted on 2007-11-20
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Last Modified: 2013-11-09
Hi,

We have one dell server in which there are 2 Gigabit NIC cards (LAN Card), usually in that we will be using only one NIC card, other will be not used.

I need to know how to configure the other as the backup NIC card as something like fault tolerance. If the first one which we are using fails automatically the second should work.

The OS is windows 2003 Std Edition.

I need to have the same ip address on both the nic cards.

Pls let me know how to configure the same.
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Question by:expertblr
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Expert Comment

by:Michael Pfister
ID: 20326302
To get this configured, both "ends" must support it: the NIC driver and the network switch where both NICs are attached.
Its called "NIC teaming", and can be configured for aggregation and/or fault tolerance.

I think Dell uses Broadcom NICs. You need the Broadcom driver and the Broadcom configuration tool. You will create a "virtual" NIC that gets the IP address containing both physical NICs.
What you need to configure on your switch depends on the manufacturer of your hardware.

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by:Michael Pfister
ID: 20326314
Broadcom calls it "BASP"

55.)        What is BASP (Broadcom Advanced Server Program)?

BASP is a Broadcom intermediate software driver for Windows Server 2003, Windows 2000, Windows NT, NetWare, and Linux that provides load-balancing, fault-tolerance, and VLAN features. These features are provided by creating teams (virtual adapters) that consist of multiple NIC interfaces. A team can consist of one to eight NIC interfaces, and each interface can be designated as primary or standby. All primary interfaces in a team will participate in load-balancing operations by sending and receiving a portion of the total traffic. Standby interfaces will take over in the event that all primary interfaces have lost their links. VLANs can be added to a team to allow multiple VLANs with different VLAN IDs. A virtual adapter is created for each VLAN added. Load-balancing and fault-tolerance features will work with any third party's NIC adapters. VLANs only work with Broadcom NIC adapters.

http://www.broadcom.com/support/ethernet_nic/faq_drivers.php
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Author Comment

by:expertblr
ID: 20326467
Hi,

I have dell server in which i have 2 Gbic NIC Cards which are Broadcom Nextreme Gigabit and if i go the Nic or LAN properties i am able to see the option Network Load balancing currently that option is unchecked.

Now pls tell me how do i configure such that if one network card fails the other should come up automatically ( same ip address for both the nic cards) and i have cisco 4507 switch which is also having gigabit ports where this server is connected.

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LVL 29

Expert Comment

by:Michael Pfister
ID: 20326563
Since I'm not up-to-date with Cisco's IOS, I hope I'm able to help you. I found an info via google that the newer Cisco IOS versions will automatically recognize when you connect teamed network cards. So configure your team on the Dell server. A new network card will appear. Make sure it gets the correct IP config. Then check if your system is reachable.

If this is not working, here's how you normally would configure it manually on the older switches (can't test here, so be careful!). Adjust the port names to your config!

interface port-channel1
description port-channel1
spanning-tree portfast
!
exit
!
interface GigabitEthernet1/1
description port-channel NIC 1
spanning-tree portfast
channel-group 1 mode on
!
exit
!
interface GigabitEthernet1/2
description port-channel NIC 2
spanning-tree portfast
channel-group 1 mode on
!
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Author Comment

by:expertblr
ID: 20326594
Hi,

How to configure the team on the dell server??????????

And note i dont want to do any network load balancing
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Expert Comment

by:Michael Pfister
ID: 20326761
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Author Comment

by:expertblr
ID: 20327138
For my secnario which one would you refer


Smart Load Balancingâ„¢ and Failover
Link Aggregation (802.3ad).
Generic Trunking (FEC/GEC)/802.3ad-Draft Static
SLB (Auto-Fallback Disable).

Pls let me know
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Expert Comment

by:Michael Pfister
ID: 20327463
Smart Load Balancing and Failover
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Author Comment

by:expertblr
ID: 20327567
Hi,

Should i have to assign different ip addresses for different nic or same for both the nic, how it is?????
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Accepted Solution

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Michael Pfister earned 750 total points
ID: 20327797
No, the 2 NICs won't get an IP address at all. The IP address will must be assigned to the new team!
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Author Comment

by:expertblr
ID: 20328007
Ok I will check this and let you know ........
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Author Comment

by:expertblr
ID: 20338605
Hi,

It worked fine, but the problem is at time of primary network card failure and at the time of switching i am seeing one or two request time outs ( i had given continous ping and checked)

Thanks
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Expert Comment

by:Michael Pfister
ID: 20349381
Yes, you will see a short connectivity drop. But TCP can handle that so your users won't notice.
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