I did read your statement correctly.
Which datalink protocols retransmit errored frames without the
knowledge of the host? Are there some that do it by default? Are there
some that don't do this by default but can be configured to do so?
>>> "Brandon Ripper" <[EMAIL PROTECTED]> 3/26/01 12:43:16 PM
>>>
What can be seen by my statement is that the host would re-transmit
unless
there was a CRC problem on the serial link that the protocol corrected
on
its own. Please read more carefully.
At 11:40 AM 3/26/01 -0700, you wrote:
>Lest we go through all of this again, a few weeks ago there was a
great
>thread on this very topic. The resolution was that in just about
every
>situation, it is the hosts that do the retransmitting, NOT the
routers!
>To find out why, go to the archives and search through the last three
>months for a topic similar to this one. There is a some very useful
>information contained therein.
>
>HTH,
>John
>
> >>> "Brandon Ripper" <[EMAIL PROTECTED]> 3/26/01 11:25:10
AM
> >>>
>Hello,
>
> Well, it depends what type of transmission problem occurs.
If
>a
>CRC failure occurs on the serial link depending upon the protocol
being
>
>used between devices then that data may or may not be re-transmitted.
>However, if either error checking is not present, or the devices do
not
>
>notice a problem, then the sending host will re-transmit packets per
>TCP/IP
>standard. The receiving host will actually request the
re-transmission.
>But
>like I said, if a CRC error were to occur in a serial line protocol
>then
>neither host would be the wiser, and it would the routers would
>re-transmit.
>
>Brandon Ripper -ccna
>
>At 10:37 AM 3/26/01 -0700, you wrote:
> >Hi All,
> >
> >I know I should know this, but frankly I can not remember the
details
>to
> >save my life...
> >
> >Let's say we have two routers connected over a serial link, they
are
>doing
> >routing, not bridging. If the serial line takes a hit who is
>responsible for
> >retransmitting? The sending host or the first router?
> >
> >Now let's say same config but the routers are bridging over the
serial
>line.
> >Who retansmits, the sending host or the first bridge?
> >
> >TIA
> >
> >John Hardman
> >
> >
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