[CALUG] Gigabit Ethernet

[Jason Dixon]

On Oct 17, 2005, at 9:35 PM, Ray Lischner wrote:

> Among the three main systems that I use daily, I often have to work  
> with
> files that reside on one of the other machines. Remote files access is
> noticeably slower than local file access. My proposed solution is to
> switch to Gigabit Ethernet.
>
> I started to do a little research, and stumbled on the issue of Jumbo
> Frames. My understanding is that if I am bothering to run Gigabit
> Ethernet to improve performance, I should probably also enable Jumbo
> Frames. On the other hand, Jumbo Frames would work only within the  
> LAN.
> For any network access outside the Gigabit LAN, I cannot use Jumbo
> Frames, which means I need two Ethernet adapters in each machine.
> (That's not a problem; I can continue to use the current adapter for
> Internet access and use the new Gigabit adapters for LAN access.)

Wouldn't PMTU discovery allow the sending host to retransmit at 1500  
for anything not destined for the local LAN?

--
Jason Dixon
DixonGroup Consulting
http://www.dixongroup.net