You definitely want to be using jumbo frames for gig ethernet; I advise using ethernet chipsets with hardware off-load as well, and ensure it's enabled at boot. I don't understand why you're worried about enabling the jumbo frames though. It doesn't break backwards compatibility. Your 100baseT stuff will continue to function fine. On 26 May 2014 17:38, Russell Coker <russell@coker.com.au> wrote:
I've got a network with performance problems at GigE speed and would like to use jumbo packets. The problem is that there is some 100baseT gear on the network.
What's the best way of using a Linux router to solve this given that I don't want to change IP addressing?
I'm thinking of changing the addresses of printers (which I think includes all 100baseT gear) from 192.168.0.x to 192.168.1.x, adding all the old printer addresses to the GigE port on the Linux, and then using DNAT rules to forward the packets to the new printer addresses (which will be on a 100baseT switch on a different Ethernet port of the Linux box). That way I don't need to reconfigure everything that uses a printer.
Is there a better way?
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