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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