To answer your question, I believe the switch ports, whether trunked or not,
still forward based on the table of learned MAC-addresses.
Meaning that a VLANx packet, assuming the destination MAC address is already
learned, will only traverse the trunk port towards the valid destination.
------
Fred Nielsen [[EMAIL PROTECTED]]
------
John Neiberger <[EMAIL PROTECTED]> wrote in message
24049784.959891399421.JavaMail.imail@tiptoe">news:24049784.959891399421.JavaMail.imail@tiptoe...
: In this case, though, both switches B and C are in the same VLAN, but I
: wouldn't want traffic destined for C going down the trunk connected to B.
: This would be a waste of time and bandwidth. I'm trying to determine if
the
: trunk will pass ALL traffic for that VLAN, or only VLAN traffic that is
: actually destined for an endhost on the opposite end of a particular
trunk.
: :-) That barely makes sense....heh heh.
:
: > If you use ISL, it will pass traffic only if it is destined for that
: VLAN. It
: > does frame tagging.
: > It won't pass unnecessary traffic.
: >
: >
: >
: > John Neiberger wrote:
: >
: > > Ok, I'm suffering from a brain cloud at the moment. So, willing to
: suffer
: > > the comic flames and arrows, I ask the following question:
: > >
: > > Assume we have three switches: A, B, and C. A has a fast ethernet
: > > connection to B and another to C. B and C are not directly
connected.
: At
: > > this point, these are not trunk lines and they are in the same VLAN.
: That
: > > means only traffic destined for B goes down the line to B, and
traffic
: > > destined for C goes to C.
: > >
: > > Now, if I were to make both of those connections trunk lines, either
: ISL or
: > > 802.1q, would I still have only B-destined traffic going to B or
would
: that
: > > trunk be passing all traffic for that entire VLAN up to B even though
: > > C-destined traffic is a waste of bandwidth on the B trunk?
: > >
: > > Thanks for the help, as always!
: > >
: > > _______________________________________________________
: > > Get 100% FREE Internet Access powered by Excite
: > > Visit http://freelane.excite.com/freeisp
: > >
: > > ___________________________________
: > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
: > > FAQ, list archives, and subscription info: http://www.groupstudy.com
: > > Report misconduct and Nondisclosure violations to
[EMAIL PROTECTED]
: > > ---
: >
: > ___________________________________
: > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
: > FAQ, list archives, and subscription info: http://www.groupstudy.com
: > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
:
:
:
:
:
: _______________________________________________________
: Get 100% FREE Internet Access powered by Excite
: Visit http://freelane.excite.com/freeisp
:
: ___________________________________
: UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
: FAQ, list archives, and subscription info: http://www.groupstudy.com
: Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
: ---
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
