Solved

Does teaming a Nic mean they both work at the same time and can more than 2 be in one team?

Posted on 2008-10-03
3
339 Views
Last Modified: 2012-06-27
Hi,  I've done some analysis on a server and have discovered the Single Nic total bytes is averaging on 52% despite the network utilisation being 15%. (All other device counters are OK).
Can i ask, if i team the Nic, do they both work at the same time thus reducing the load on the single nic or does teaming simply act as fail-over. Also, slots permitting, is it possible to team more than one card, ie. could all 4 be part of one team?
Thanks for looking.
0
Comment
Question by:Jason Thomas
3 Comments
 
LVL 70

Expert Comment

by:KCTS
ID: 22633587
Teaming NICs may improve throughput a bit - but as only one NIC can transmit on the network at once, you will not double throughput by teaming - its essentailly a fail-over.
0
 
LVL 1

Author Comment

by:Jason Thomas
ID: 22634796
Thank you. Are there any suggestions on how to reslve the issue, other than splitting the data across two physical servers?
Thank you.
0
 
LVL 32

Accepted Solution

by:
aleghart earned 500 total points
ID: 22638499
> only one NIC can transmit on the network at once

Not completely true.  This is true when the server and clients are on different subnets.  If they are on the same broadcast subnet (i.e. 192.168.1.x), "smart" load balancing occurs by using a team IP address.  The MAC of each NIC is broadcast with the team IP address.

You can also setup multiple ports with link aggregation (if supported on the switch).  This simplifies the teaming.

From Broadcom (used by Dell):

Smart Load Balancing enables both transmit and receive load balancing based on the Layer 3/Layer 4 IP address and TCP/UDP port number. In other words, the load balancing is not done at a byte or frame level but on a TCP/UDP session basis. This methodology is required to maintain in-order delivery of frames that belong to the same socket conversation. Load balancing is supported on 2-8 ports.


I've attached a Broadcom/Dell whitepaper on teaming.  Similar team types are available with 3Com and Intel NICs.  The best method is with matched NICs from the same vendor.


broadcom-nic-teaming-1.1-final.doc
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

NTFS file system has been developed by Microsoft that is widely used by Windows NT operating system and its advanced versions. It is the mostly used over FAT file system as it provides superior features like reliability, security, storage, efficienc…
This article aims to explain the working of CircularLogArchiver. This tool was designed to solve the buildup of log file in cases where systems do not support circular logging or where circular logging is not enabled
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…

912 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now