Layer 3 switch = Router (IMHO) esp in today's world. All layer 3 switches
that are routing packets using layer 3 addresses must follow RFC1812 etc.
Layer 2 switch != Router. They commonly do Ethernet stuff.
Bora
On Fri, 16 Mar 2001, Joe Touch wrote:
>
>
> Harald Alvestrand wrote:
> >
> > At 09:03 15/03/2001 +0800, huangjianbo wrote:
> > >I am working on a paper on router, but one problem blocked my process. That
> > >is what's the differents between a switch and a router for the view of
> > >theoritical.
> > >
> > >As to the 3 Layer switch and router, both of them work as a distributor
> > >based on the IP address. Just some small differents usage and implemention.
> > >
> > >
> > >Of coourse, we disscuss this problem on the switch and router on the same
> > >layer.
> >
> > A router decrements the IP TTL field.
>
> It should also not propagate broadcast IP packets (subnet or all 1's).
> (Any other hard requirements?)
>
> Joe
>
