nanog mailing list archives
Re: can I ask mtu question
From: Sam Stickland <sam_mailinglists () spacething org>
Date: Tue, 03 Feb 2009 12:04:22 +0000
Ricky Beam wrote:
For what it's worth, TCP will negiogate MSS and will work with mismatched MTU in a single LAN segment. Other protocols (e.g. UDP) will be borked though.On Fri, 30 Jan 2009 17:00:00 -0500, Saku Ytti <saku+nanog () ytti fi> wrote:Which standard are you referring to? AFAIK, nothing above 1500 is standardisedNone that have ever been accepted. From a quick google for manufacturer support, 9216 looks like the most popular number. But, as I said, it boils down to the largest frame *every* device on the LAN will accept. If there is a single device that only supports "9000", then that's your limit. And if there's a single non-JF device in the LAN, it throws a wrench into the whole thing. (This appears to be one of the sticking points as to why IEEE won't accept the addition of JF to any specs.)--Ricky PS: The topic pops up again with super-jumbo frames in 10G networks.
S
Current thread:
- Re: can I ask mtu question Michael Dillon (Feb 01)
- <Possible follow-ups>
- Re: can I ask mtu question Bill Stewart (Feb 03)
- Re: can I ask mtu question Sam Stickland (Feb 03)
- Re: can I ask mtu question Niels Bakker (Feb 03)
- Re: can I ask mtu question Sam Stickland (Feb 03)
- Re: can I ask mtu question Niels Bakker (Feb 03)