ropped. 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/group
: Thursday, January 11, 2001 9:56 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject: RE: switch flow control
One of us needs a pair of glasses ;-) I read ;
minimal specification for asymetric flow control
Has to do with flow control.
If you say a device to pause , process t
al Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Flem
Sent: Thursday, January 11, 2001 9:56 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject: RE: switch flow control
One of us needs a pair of glasses ;-) I read ;
minimal specification for asym
al Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Flem
Sent: Thursday, January 11, 2001 9:56 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject: RE: switch flow control
One of us needs a pair of glasses ;-) I read ;
minimal specification for asym
On Behalf Of Flem
Sent: Thursday, January 11, 2001 9:56 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject: RE: switch flow control
One of us needs a pair of glasses ;-) I read ;
minimal specification for asymetric flow control
Has to do with flow control.
If you say a devic
I believe what everybody is trying to reference is actually the
subspec contained in 802.3x, which is generally dealing with
Full Duplex transmission. An optional subcomponent deals with
flow control using "pause" frames. This appears in these links
(watch wrap):
by
the summary, which I
may have misinterpreted as autoconfig
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Flem
Sent: Thursday, January 11, 2001 9:56 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject: RE: switch flow control
One of us needs
A switch recieves data in it's port buffer at 100 mbps, as the frame travels
the switches backplane it is copied to all ports, when it arrives at an ASIC
chip (I forget if it's the Earl or what)in the SUP module, the module looks
in it's table and decides what port it should go out of and tells
As far as I know flow control is one of the functions of many data link
layer protocols, besides framing, error correction, sync and control.
""Rick Holden"" [EMAIL PROTECTED] wrote in message
003001c07c37$b61d6880$[EMAIL PROTECTED]">news:003001c07c37$b61d6880$[EMAIL PROTECTED]...
There is one
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
It doesn't. Layer 2 device buffers full = packets dropped.
What should happen is that at the TCP level, the two end devices should
through the TCP flow control mechanisms, agree to a reduced transmission on
the part of the sender. UDP is another story - packets are bit-bucketed and
no one is
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,
Hi,
Between the nic and the switch don't worry you won't even get a link if there is a
speed mismatch. These things I think you will find do a little clocking if they don't
get together there nothing will happen.
Autonegotiate does something similar to modems training and will establish the
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 -
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
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
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
TECTED]
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 w
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/
-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Flem
Sent: Thursday, January 11, 2001 9:56 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject:RE: switch flow control
One of us needs a pair of glasses ;-) I read ;
minimal specification for asymetric flow
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