Re: How long will it take to completely get rid of IPv4 or will it happen at all?

["Bob Evans" <bob () FiberInternetCenter com>]

It is true - you I have had to throttle back for years for optimum
transport on many carriers. In fact, if you have an ATT transit in your
mix of BGP you wont get a ping response at 1500 MTU from that ATT router.



On Sun, 28 Jun 2015 08:02:52 -0700, Owen DeLong said:
> > > On Jun 27, 2015, at 11:48 , manning <bmanning () karoshi com> wrote:
> > >
> > > Quite a few folks actually.  (the 802.5 & 802.4 specs)….
> > > This is kind of like asking when we will stop using ethernet framing
> > (ethernet was designed for a 3Mbps transmission rate)
> > > yet we are deploying 100Gbps networks.  Still stuck on that 1500byte
> > limitation.  When can we get rid of that?
> >
> > Many networks have… It’s called “Jumbo Frames”
>
> Unfortunately, enough people do things to break PMTU Discovery that it's
> not
> usually feasible to send jumbograms outside your directly controlled
> networks.
> So you may actually have jumbogram support all the way one end to the
> other,
> but you can't rely on it and have to throttle back to 1500 (or even
> smaller)
> in self-defense....