Re: R: Kernel bug handling TCP_RTO_MAX?

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Er, wasn't that SCTP? If so, that's RFC 3309 and many, many drafts. You might also want to look at DCCP (draft-ietf-dccp-*) and the various documents from the IETF's PILC group. There is also a proposal for a new TCP-style protocol with a real differential controller, the name of which I can't recall right now.

See also draft-allman-tcp-sack for another proposal for a fix that won't break old stacks. Also draft-ietf-tsvwg-tcp-eifel-alg, draft-ietf-tsvwg-tcp-eifel-response and many more.

I can't claim to be a TCP expert, but TCP_RTO_MIN can certainly have a different value for IPv6, where I believe millisecond reolution timers are required, so 2ms would be correct.

Unfortuntately, TCP is incredibly subtle. So, the IETF are really conservative about even suggesting modifications to it, because a common and badly behaved stack can cause major disasters in the 'net.

Andrew

--On Thursday, December 12, 2002 20:45:24 -0800 Nivedita Singhvi <niv@us.ibm.com> wrote:

  You are looking for "STP" perhaps ?
  It has a feature of waking all streams retransmits, in between
  particular machines, when at least one STP frame travels in between
  the hosts.

  I can't find it now from my RFC collection.  Odd at that..
  Neither as a draft.  has it been abandoned ?
Learn something new every day :). Thanks for the ptr. I'll
look it up..

> It would be wonderful if we could tune TCP on a per-interface or a
> per-route basis (everything public, for a start, considered the
> internet, and non-routable networks (10, etc), could be configured
> suitably for its environment. (TCP over private LAN - rfc?). Trusting
> users would be a big issue..
>
> Any thoughts? How stupid is this? Old hat??

  More and more of STP ..
thanks,
Nivedita

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