Jimmy wrote:
> 
> If it is connected to another network, then it is a backbone
> between the two
> network rite? 

Probably. 

> Else if it is connect to the Internet, there will
> not be any
> backbone in the network? Rite? 

The router is the collapsed backbone for the network you showed us, as I
mentioned before.

> Correct me if wrong. Sorry, me
> new in this
> line. So have to seek advice from you all.

Don't take words like "backbone" too literarlly. It's not a scientific term.
That would be my advice.

Priscilla


> 
> Cheers,
> Jimmy
> 
> ""Priscilla Oppenheimer""  wrote in
> message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Jimmy wrote:
> > >
> > > Hi,
> > > Just want to clarify something. Let say i have middle-size
> > > network which all
> > > the switches (around 4) connected together to a router. The
> > > backbone of the
> > > network should be the toward the WAN side which is from the
> > > router onsward
> > > rite? Or is it the connection from the switch to the router?
> > >
> > >
> > >
> > > Switch-----Switch 1------\
> > > Hub   -----Switch 2-------\
> > > Switch-----Switch 3-------/ Router ------ (Backbone)
> > > Hub    -----Switch 4------/
> > >
> >
> > It's hard to say, but it looks like you have a collapsed
> backbone and it's
> > the router. When multiple links converge into one device,
> such as a switch
> > or router, then it's often called a collapsed backbone.
> >
> > Where does the WAN go? If it just accesses another network,
> such as the
> > Internet, then it wouldn't normally be called a backbone. But
> if you have
> an
> > enterprise network with a core of WAN links that connect
> campus LANs, you
> > could call the WAN core the backbone of the enterprise
> network.
> >
> > Usually a backbone has more capacity than the other links in
> the network,
> > however, and so usually a WAN link doesn't act as a backbone
> for LANs. A
> > more usual use of the term would be a Gigabit Ethernet
> backbone that acts
> as
> > the backbone for 10 and 100 Mbps Ethernet segments.
> >
> > It's not really a scientific term, though, and it gets used
> in many
> > different ways. The idea is that when you draw your topolgoy,
> you will
> > undoubtedly have some larger transmission link that
> aggregates traffic
> from
> > smaller links. That larger link is a backbone. The drawing
> should look
> like
> > the bone in your back that connects other bones. It's just an
> analogy.
> >
> > Priscilla
> 
> 




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