Chuck -
Pause frame is implemented with Gig-E over fiber, which Cisco has blades for
for the Cat 4000, 6500, and above. There was a thread somewhere referring
to it as either 802.1z or 802.3z. (Not sure which; I haven't looked it up)
Sun's gig-e cards support pause frames, I know. I can't speak for any other
cards.
Joel
""Chuck Larrieu"" <[EMAIL PROTECTED]> wrote in message
000101c07c59$73636040$[EMAIL PROTECTED]">news:000101c07c59$73636040$[EMAIL PROTECTED]...
> 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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