7 Oct
2006
7 Oct
'06
4 p.m.
On Sat, Oct 07, 2006 at 02:57:03PM +0100, Mark Rogers wrote:
What are correct MTU/MRU/MSS values? I have 1500/1500/1432 at work, but MSS looks wrong to me. not entirely sure what MSS affects, though.
MTU should be set to 1458, it might seem to work with a higher setting, but some sites will break and you may see other intermittent problems.
BT (iirc) said some time ago they were going to fix the MTU "problem", so it could be that on the ATM backend it is working sometimes but when a different router comes into play for whatever reason on the ATM network that it breaks because you've got a higher mtu set and this could explain the behaviour you are seeing.
Adam
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