[Gllug] Anyone having broadband (probably PlusNet) problems today?

[Chris Bell]

On Wed 23 Mar, Russell Howe wrote:
> 
> On Wed, Mar 23, 2005 at 02:54:11PM +0000, Richard Jones wrote:
> >   $ ping -M do -s 1432 www.bbc.co.uk
> >   PING www.bbc.net.uk (212.58.224.116) 1432(1460) bytes of data.
> >   1440 bytes from www16.thdo.bbc.co.uk (212.58.224.116): icmp_seq=1 ttl=249 time=87.
> 8 ms
> 
> Looks good
> 
> > For packet sizes >= 1433, <= 1472:
> > 

> 
> Note that the PMTU (path MTU) was detected as dropping once it hit
> 192.168.254.1, which is my downstairs DSL router, running PPPoE (PPPoE
> MTU would appear to be 1492).
> 

   The reason for the reduced size MTU used to be that it was a better fit
in the old BT system, which has now been replaced or upgraded to handle 1500
correctly. There is no longer any general reason for using a reduced MTU.





-- 
Chris Bell

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