Well, as each vlan is a separate broadcast domain, essentially you'll need
to have a different ip subnet for each vlan to communicate between them
through a router (or firewall which is often the case). It's an advantage
to both, but some of the bigger advantages are being able to program a port
to join a given vlan due to a MAC address, and generally being able to
manage how users are connected without having to re-patch everything (so
long as you have things properly documented to begin with). Of course, it
also adds a big mess to troubleshooting when folks are properly documenting.
--
Jason Roysdon, CCNP/CCDP, MCSE, CNA, Network+, A+
List email: [EMAIL PROTECTED]
Homepage: http://jason.artoo.net/
Cisco resources: http://r2cisco.artoo.net/
""ahmad bilal"" <[EMAIL PROTECTED]> wrote in message
93t0pf$rjd$[EMAIL PROTECTED]">news:93t0pf$rjd$[EMAIL PROTECTED]...
> hi ,
>
> actually i have a question ,why are vlan used and what are its advantages
> cause this has me confused.
> if we make vlans what is the technical advantage ,if its limiting
broadcasts
> then subneting and using switch makes it possible,if it is security how is
> it secure as vlans still are able to comunicate via routers or in case of
> layer 3 switch.
> is it true that vlans have advantage only in lan's or using layer 2 no ip
> addreses associated with vlans.
>
>
> ""Jeff Duchin"" <[EMAIL PROTECTED]> wrote in message
> 93sp4p$cce$[EMAIL PROTECTED]">news:93sp4p$cce$[EMAIL PROTECTED]...
> > Is it me, or is it that LAN switching engineers here are rare? Is
anyone,
> > beside myself, using dynamic VLANs in a multi-layer campus environment?
> >
> > Jeff
> >
> >
> > _________________________________
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>
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