what is backplane?

I have a 3com baseline 10/100 24port switch and a Dell 3348 PowerConnect 48port switch that also has 2 - 1gb ports.  I was asked how they are connected and if they were backplaned.  

I do not know what this is or how to do it.  I have them connected with a crossover cable and thats all i know.

Can anyone help explain to me and help me backplane them.

thanks
mmacdougallAsked:
Who is Participating?
 
TRobertsonCommented:
Your 3Com Baseline switch is an unmanaged entry-level switch that does not have any backplaning ablility.  However you Dell does have the ability to add the 1000BASE-SX SFP Transceiver for backplaning.  You can not backplane these two switches however if you wish to backplane in the future I would recommend purchasing another Dell 3348.

From dell product site -> 'The PowerConnect™ 3348 also offers stacking capabilities for simplified network management of multiple switches."
0
 
mmacdougallAuthor Commented:
I actually read that definition before, but it doesn't help me with what I am trying to do.
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

 
jbedwar1Commented:
0
 
mmacdougallAuthor Commented:
OK, forget about what backplane is.  How can I do it with my 2 switches.
0
 
jbedwar1Commented:
Unfortunately I dont know much about Backplanes myself... So all I can do is provide links to other resources.  Perhaps they can help give you an idea.

Backplane Designer's Guide.
http://www.fairchildsemi.com/ms/MS/MS-561.pdf

here is a page that has Someone elses backplane design http://www.sigcon.com/Pubs/edn/backplane.htm
0
 
JFrederick29Commented:
If you had a modular switch chassis like a Cisco 4500 or 6500, I guess the modules would be "backplaned", meaning you have different network modules plugging into the same switch chassis/backplane.  If you are connecting via cross over cable, I would say no, the switches are not "backplaned".  Do they mean clustered perhaps?  Clustering refers to physically seperate switches, connected to form one logical switch.  The cluster of physical switches can be managed as one logical entity.  If that is the case and you have two different manufacturers, I would venture to say clustering is impossible as it relies on software to handle the cluster.
0
 
TRobertsonCommented:
Backplanes are usually some sort of pripority connection switch manufacturers will use to connect multiple switches together.  This backplane can handle the communication between switches to assist the switches in acting as one.  I have 4 intel switches with a backplane connection between all of them which in turn makes them act as one big 100 port switch or stack.  
0
 
TRobertsonCommented:
>>"how they are connected and if they were backplaned.  "
If the two switches are on the same lan then you must have some method for the switches to communicate.  This could be a cross-over cable or some sort of backplane connection, also sometimes called matrix connections.
0
 
etracsupportCommented:
i know with the dell switches they are stacked and they have a proprietary adapter to connect the two
0
 
The--CaptainCommented:
>I have them connected with a crossover cable and thats all i know

Then just tell them that.  When they are asking about backplanes, I think they maybe just want to know if the equipment is modular (ie you can swap interface cards, etc).

> I have 4 intel switches with a backplane connection between all of them which in turn makes them act as one big 100 port
>switch or stack

I object to that definition of "backplane", although I guess if the equipment is simply connecting it's bus to accomodating equipment, the definition may be technically accurate.  In any case, I don't think I can recall any equipment that is manufactured by two different vendors that can be "backplaned".  I wonder if the folks that were asking these questions to the original poster were less than knowledgeable.

Cheers,
-Jon
 
0
 
XSINUXCommented:
Hi,

This link would help you find a solution to backplane the two switches ( 24port Switch with the Dell 48port Switch ) .
Click on this link http://www.cl.cam.ac.uk/Research/SRG/bluebook/28/clockgen/node3.html
Note Click Next and Previos on the page for more info.
http://www.cl.cam.ac.uk/Research/SRG/bluebook/28/clockgen/node2.html


Some Configuring Info for the Dell Power Connect Switch 3348 can be found on this link http://support.dell.com/support/edocs/network/pc33xx/en/ug/configha.htm#1113900


Hope this Helps.

Cheers
Sinu
0
 
TRobertsonCommented:
I think we all agree that a backplane is a connection to join multiple switches (usually same manufacture) to a single bus.  You are using a crossover cable for your switches to communicate, no backplane.  Have your questions have been answered, or what more do you need?

>>what is backplane?
Backplanes are usually some sort of pripority connection switch manufacturers will use to connect multiple switches together.  This backplane can handle the communication between switches to assist the switches in acting as one.

 >>"how they are connected and if they were backplaned.  "
If the two switches are on the same lan then you must have some method for the switches to communicate.  This could be a cross-over cable or some sort of backplane connection, also sometimes called matrix connections.

>>I have them connected with a crossover cable and thats all i know.
0
 
mmacdougallAuthor Commented:
Is a backplane an extra piece of equipment which needs to be purchased to connect the 3com and the Dell?
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.