On Thu, 18 Aug 2005, Paul Jakma wrote:
- reachability detection itself is unidirectional
(iljitsch's draft mentions "unidirectional", i know, but wrt
outside unidirectional issues. I'm proposing the reachability
mechanism itself be unidirectional in nature. Two unidirectional
paths == bi-directional :) )
I'd should explain this better:
- the protocol would be to implement "I can hear you", rather than
"We can both hear each other" (as, eg, some other path-state
protocols do - like OSPF Hello)
- As an optimisation, if the other side asks "Can you hear me?", you
can at least infer "I can hear them" - and hence suppress a probe.
Aside: The address tuples used in each direction could be different
PS: I know all the reachability/probing/ULP-feedback talk is all still
at exploratory stages. Hope I've not been /too/ presumptive in
attacking ULP-feedback and n^2 probing (ie, attacking these when
they're only being /considered/, rather than decided on. Just trying
to nip these two particular ideas in the bud - at least for anything
other than appendix 'implemention note' type material).
regards,
--
Paul Jakma paul@clubi.ie paul@jakma.org Key ID: 64A2FF6A
Fortune:
I can't live the button-down life like you. I want it all! The
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-- Homer Simpson
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