nanog mailing list archives

Re: Internet Exchanges supporting jumbo frames?


From: Nick Hilliard <nick () foobar org>
Date: Wed, 09 Mar 2016 18:14:29 +0000

Saku Ytti wrote:
Poller in the IXP has too large MTU, it tries to send ping packets
with max_size+1, if they work, customer has too large MTU. Also it
tries to send max_size, if it does not work, customer has too small
MTU. As icing on top, it tries to send max_size+1 but fragments it to
max_size and 1, and sees what comes back.

you're recommending that routers at IXPs do inflight fragmentation?

Nick


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