Guys, this "pause" frame does not appear to have anything whatsoever to do
with flow control of data transmission. Unless I am blind as a bat I am
reading the link below to be referencing auto negotiation of links between
NIC and switch or any device on a port and switch..
Look, if a switch cannot output data as fast as it comes in, and the buffers
fill, then packets get dropped. Same as with a router. or a PC.
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Flem
Sent: Thursday, January 11, 2001 9:17 PM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Re: switch flow control
Or ;
http://grouper.ieee.org/groups/802/3/z/public/presentations/jan1997/HFpsbits
.pdf
Written by a cisco guy ... you are rights cisco do
implement it.
flem
--- Chris McCoy <[EMAIL PROTECTED]> wrote:
> This is true...sorry. I was reading a cisco
> document
> on the Cat 6000s where they explained flow control
> as
> being 802.3Z flow control. I screwed up...(see
>
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sft_6_1/configgd
/ether.htm#xtocid170110)
> Come to think of it...it's called 802.1x
> (http://www.ieee802.org/1/pages/802.1x.html). Cisco
> supports it with some exceptions (set port
> flowcontrol).
>
> Guhhhh....
>
> Chris M.
>
> --- Flem <[EMAIL PROTECTED]> wrote:
> > 802.1Z ? or 802.3z ?
> > This is gigabit stuff is it not ?
> >
> > Is cisco implementing 802.3z on his gigabit
> > switches ? Don't think so .
> > Switch will buffer , if no buffer , then drop
> > packet.
> >
> > Do you know what vendor implements pause frames ?
> >
> >
> > flem
> >
> >
> > --- Chris McCoy <[EMAIL PROTECTED]> wrote:
> > >
> > > 802.1Z or 'pause frames'
> > >
> > > Chris M.
> > >
> > > --- Flem <[EMAIL PROTECTED]> wrote:
> > > > Between NIC and switch ?
> > > > What is the name of this handshaking ?
> > > >
> > > >
> > > > flem
> > > >
> > > > --- Circusnuts <[EMAIL PROTECTED]> wrote:
> > > > > I believe there is a handshake going on with
> > the
> > > > > switch & NIC
> > > > >
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Rick Holden" <[EMAIL PROTECTED]>
> > > > > To: <[EMAIL PROTECTED]>
> > > > > Sent: Thursday, January 11, 2001 11:33 PM
> > > > > Subject: switch flow control
> > > > >
> > > > >
> > > > > > There is one thing that confuses me about
> > > > > switches. If you have a switch
> > > > > > with a 100Mb port and 10Mb port and the
> 100
> > > > starts
> > > > > sending data to the 10
> > > > > > how does the sending station keep from
> > > > overflowing
> > > > > the buffer on the
> > > > > switch
> > > > > > since there in now flow control at layer
> 2?
> > > > > >
> > > > > > _________________________________
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