Hi
And thanks one and all for the help!
I feel a lot more confident in my understanding.
It has been my understanding that the sending host would always send any
retransmitts, with the exception of something like a X25 or LLC2 network in
between hosts. But I got to reading a bit more on RSRB and DLSw+ the other
day, and the more I read the more I got confused... Therefore the question I
posted today.
Sometimes I hate the CCO pages ;-) I get too deep off on a tangent and lose
sight of the forest. Thanks for defining the forest again.
THX
John Hardman
""Howard C. Berkowitz"" <[EMAIL PROTECTED]> wrote in message
news:p0500191eb6e53e951c3a@[63.216.127.100]...
> >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
>
> Retransmission is not inherently part of routing _or_ bridging. For
> most modern environments, retransmission is done between end hosts
> [1].
>
> When retransmission is defined at the data link layer, it is done
> between whatever devices are at the two ends of the link -- hosts and
> hosts, hosts and routers, routers and routers, etc.
>
> [1] In networks that follow the "end to end" assumption of the Internet,
> and do not contain "midboxes" such as NATs, firewalls, proxies,
tunneling
> devices, etc.
>
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