Sweet!!Nice Post. Learn something new everyday!!!
For clarity though, native PPP will not retransmit. (Lest someone studying
for a particular high level test get's a question about it) ;)
-----Original Message-----
From: Brian Dennis [mailto:[EMAIL PROTECTED]]
Sent: Thursday, February 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 (R&S)(ISP/Dial)
CCSI #98640
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL 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 a connection oriented, reliable
Cisco's HDLC is non-standard and is not connection-oriented. The router
would not retransmit. The router also won't retransmit if it's PPP, Frame
Relay, Ethernet, etc. etc etc. etc.
>protocol... meaning if a packet is lost in transit
>accross the serial link, the router will knw it when
>it receives a response from the destination router.
>It'll then resend the frame. If you're using a
>datagram protocol, like ppp, however, it will rely on
>the upper layer protocols to detect missing data..
>
>
>--- Brant Stevens <[EMAIL PROTECTED]> wrote:
> > 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...
> >
> > Hope this helps...
> >
> > Brant I. Stevens
> > Internetwork Solutions Engineer
> > Thrupoint, Inc.
> > 545 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 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
> > C--------HOST D
> > Interfaces - (A1) (B1) (B2) (C1)
> > (C2) (D1)
> >
> > What device would rebroadcast?
> >
> > I think that router-B (port B2) would realize an
> > error had occured, and
> > would resend, so the answer should be port B2, but
> > I've been through all my
> > books and can't find anything to confirm or deny my
> > conclusion...
> >
> > Any thoughts?
> >
> > _________________________________
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________________________
Priscilla Oppenheimer
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