[j-nsp] mx960 to mx960 via ciena 6500 - mtu smaller in the middle

[Gert Doering]

Hi,

On Mon, Apr 16, 2018 at 05:12:43PM -0400, Justin M. Streiner wrote:
> You're better off staying within the limits of what the intermediate gear 
> will support.  Fragmentation and re-assembly if you expect to fill a 16000 
> byte frame (or fill one enough to cause fragmentation as the frame 
> crosses the Ciena gear) could impose a significant performance penalty.

With "usual" gear there won't be fragmentation if an intermediate L2 device
cannot handle the MTU that both endpoints assume to be possible - just
frame drops.

Which the original poster already noticed ("pings over 9584 are lost")...

gert
-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
                             Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany                             gert at greenie.muc.de
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