[CALUG] Gigabit Ethernet

Ray Lischner lisch at tempest-sw.com
Wed Oct 19 17:30:46 CDT 2005

On Wednesday 19 October 2005 05:54 pm, Tim Thomas wrote:
> The problem is that non-jumbo equipment will see a jumbo frame
> as a "jabber" and will effectively lop off anything above the
> standard data size of 1500 bytes.

So why doesn't PMTU discovery work in this case? Why can't the jumbo 
frame device discover the path MTU is only 1500 (or whatever) and send 
frames accordingly when it needs to talk to that device?

I've never delved down to this level of network stuff, so I'm still 

Anyway, I decided to order a jumbo-capable switch. I'm still not sure 
how easy it will be to setup, but at least I'll have gigabit ethernet 
to keep me happy while I experiment with jumbo frames.
Ray Lischner, Author of C++ in a Nutshell

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