On Wed, Oct 13, 2010 at 05:00:46PM -0500, Rob Townley wrote: > >> If UDP communication is not possible, no probes will succeed, so the > >> minimum > >> MTU will be 0 and the maximum MTU will be 1514 by default, and all packets > >> are > >> thus forwarded via TCP, as it should. > i notice MYSELF (the Linux sever) has a minimum MTU of 0 at times and > will watch for > a corresponding increase in latency. Not sure why it would change, > but it does.
"MYSELF" should always have a minimum MTU of 0, since a node does not send
packets to itself, and hence never performs PMTU discovery on itself. Whatever
the value is, it should not have any effect on packets to other nodes.
> >> Tinc keeps sending probes after the real MTU has been determined (by
> >> default
> >> once a minute) to check whether UDP communication is still possible.
>
> If those are the PING PONG probes, i do not see them once a minute.
> What setting is determines the 1 minute interval?
The "PING PONG probes" are sent to test whether the TCP connections are still
alive. Both TCP and UDP probes are sent with PingInterval seconds inbetween.
> Guus, after printing out your email and reading while on walk outside
> in beautiful weather here in Omaha, NE, i realized it made perfect
> sense and that you wrote it extremely well. Thank You.
Fresh air is always good :)
--
Met vriendelijke groet / with kind regards,
Guus Sliepen <[email protected]>
signature.asc
Description: Digital signature
_______________________________________________ tinc mailing list [email protected] http://www.tinc-vpn.org/cgi-bin/mailman/listinfo/tinc
