Re: should TCPs do MTU black hole detection?

[Randy Bush <randy () psg com>]

> >  o when it breaks, the noc gets the call, debugs it, and it gets fixed
>                                                           ^^^^^^^^^^^^^
> Optimist!

but at least the user knows where the problem lies, as opposed to

> >  o when it breaks, the software does successive guesswork back-offs until
> >    it makes it through.  the performance sucks big-time, the customer
> >    thinks the isp is at fault, but the noc does not get called and the
> >    real problem never gets fixed.
> This one is pretty accurate though.

where the user thinks the isp sucks.  and the latter will be forever
increasing entropy.  the net as experienced just gets worse and worse.

randy