--Original Message-
From: Jeremy Dumoit [mailto:[EMAIL PROTECTED]]
Sent: Thursday, February 08, 2001 5:10 PM
To: Leigh Anne Chisholm; [EMAIL PROTECTED]
Subject: RE: not quite sure...
Frame relay has no means for packet loss
detection, so a higher layer protocol (probably TCP)
would have
08, 2001 8:45 PM
To: Priscilla Oppenheimer; [EMAIL PROTECTED]
Subject: RE: not quite sure...
PPP can be reliable.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios112/112cg_cr/4rb
ook/4rppp.htm#xtocid2891421
http://www.landfield.com/rfcs/rfc1663.html
Brian Dennis
CCIE #2210 (RS)(ISP
from that particular sequence number."
Is this correct?
-Original Message-
From: Christopher Larson [mailto:[EMAIL PROTECTED]]
Sent: Thursday, February 08, 2001 3:22 PM
To: 'Jeremy Dumoit'; Brant Stevens; Dennis Laganiere;
[EMAIL PROTECTED]
Subject: RE: not quite sure...
HDLC will not
In the discussion of error correction, I think an error on my part has been
missed. I was thinking about it and I wonder if this is entirely accurate:
(concerning what happens after a frame is discarded on WAN link)
"The end station will respond by acking the next packet it recieves with the
[mailto:[EMAIL PROTECTED]]
Sent: Friday, February 09, 2001 10:06 AM
To: [EMAIL PROTECTED]
Subject: RE: not quite sure...
In the discussion of error correction, I think an error on my part has been
missed. I was thinking about it and I wonder if this is entirely accurate:
(concerning what happens
no error detection or correction capabilities. In my
original "not quite sure" post, I purposely asked how certain data link
layer protocols detect the loss of a "packet" because of the four listed,
each fits into one of the three above categories.
Error detection and correction
, February 09, 2001 10:06 AM
To: [EMAIL PROTECTED]
Subject: RE: not quite sure...
In the discussion of error correction, I think an error on my part has been
missed. I was thinking about it and I wonder if this is entirely accurate:
(concerning what happens after a frame is discarded on WAN link
In the discussion of error correction, I think an error on my part has been
missed. I was thinking about it and I wonder if this is entirely accurate:
(concerning what happens after a frame is discarded on WAN link)
"The end station will respond by acking the next packet it recieves
Fifth Avenue, 14th Floor
New York, NY. 10017
646-562-6540
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Dennis Laganiere
Sent: Wednesday, February 07, 2001 11:32 PM
To: '[EMAIL PROTECTED]'
Subject: not quite sure...
I've tried to diagram this question
Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of
Dennis Laganiere
Sent: Wednesday, February 07, 2001 11:32 PM
To: '[EMAIL PROTECTED]'
Subject: not quite sure...
I've tried to diagram this question to make it
clear...
Host A is sending to Host D...
A line
HDLC will not retransmit as there is only error detection in HDLC, but no
error correction.
Original Message-
From: Jeremy Dumoit [mailto:[EMAIL PROTECTED]]
Sent: Thursday, February 08, 2001 2:19 PM
To: Brant Stevens; Dennis Laganiere; [EMAIL PROTECTED]
Subject: RE: not quite sure
Believe me, I'm crying with you, not at you. Somehow, perhaps in
some old education slides, the idea that routers routinely retransmit
has reached the level of an urban legend. X.25 switches do transmit,
but they are NOT routers.
Why do I get so emphatic about this? Because as long as
2001 9:10 AM
To: Dennis Laganiere; [EMAIL PROTECTED]
Subject: RE: not quite sure...
The question is if Router B and Router C are
routing, or if they are
bridging... If they are routing, then Router B
would re-transmit a packet.
If bridging is happening, then Host A would
retransmit.
PROTECTED]]On Behalf Of
Dennis Laganiere
Sent: Wednesday, February 07, 2001 11:32 PM
To: '[EMAIL PROTECTED]'
Subject: not quite sure...
I've tried to diagram this question to make it
clear...
Host A is sending to Host D...
A line error occurs on the serial link between
Router-B
PROTECTED]]On Behalf Of
Priscilla Oppenheimer
Sent: Thursday, February 08, 2001 4:04 PM
To: [EMAIL PROTECTED]
Subject: RE: not quite sure...
At 11:19 AM 2/8/01, Jeremy Dumoit wrote:
I actually think it depends on what encapsulation
is running accross the serial link. If you're using
HDLC then it's
I've tried to diagram this question to make it clear...
Host A is sending to Host D...
A line error occurs on the serial link between Router-B and Router-C while
passing a packet from Host-A to Host-B
Devices - Host A-ROUTER B-ROUTER CHOST D
Interfaces - (A1)
Hi,
I was under the impression - If the remote end gets an error it asks the sending
device to retransmit. This retransmitted packet came from the originator not the
router. The store and forward as I understood it got a packet if all looked ok it sent
it on if not it dropped it and sent
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