Hi On Wed, Dec 07, 2011 at 07:09:35PM -1000, Antonio Querubin wrote: > Understood. What I don't understand is why the large pings (in this case > large is anything > 1430) will sometimes work and sometimes not.
Because sometimes fragmentation of the *outer* L2TP packet happens, and
sometimes not. If fragmentation happens, anything will go through - and
the CPU load will go up through the roof.
> There is
> no packet loss between the two routers and pmtud works between them. They
> can ping each other with large packets all day. Not so the xconnected
> hosts.
The routers will know how to fragment their pings. The hosts won't.
gert
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