Nics only preforming at 500 mbps



  • A while ago I purchased http://www.newegg.com/Product/Product.aspx?Item=N82E16856205007 and have been happily using it. Recently I upgraded to gigabit and noticed that the nics only preform at 500 mbps. Does anybody know why they might be limited, and what I can do to fix it?



  • CPU…



  • Oh great that isn't really easy to replace. Is there any nettops that have dual nics that would be able to do a full gigabit or an I looking at a full sized rig.



  • I take it you mean actual throughput?  From the WAN through the LAN?



  • @laptopfreek0:

    A while ago I purchased http://www.newegg.com/Product/Product.aspx?Item=N82E16856205007 and have been happily using it. Recently I upgraded to gigabit and noticed that the nics only preform at 500 mbps. Does anybody know why they might be limited, and what I can do to fix it?

    I'm using the same box and it seems to be running at a full gig, according to ifconfig and the switch it's plugged into on the lan side.  I haven't tried measuring the actual transfer rate though.



  • Presumably he's talking about actual throughput; in terms of reported link speed, it's always going to be either 10, 100 or 1000 with these cards.


  • Netgate Administrator

    If you want actual 1Gbps throughput, between any two firewalled interfaces, you need to step up to a more powerful CPU. A G1610T perhaps. You won't see more than ~700Mbps with that Atom.

    Steve



  • @wbond:

    I'm using the same box and it seems to be running at a full gig, according to ifconfig and the switch it's plugged into on the lan side.  I haven't tried measuring the actual transfer rate though.

    While ifconfig detects full gig when you try to actually utilize it you will be capped around 500 mbps. I thoroughly tested this using various methods, and you can see for yourself that it isn't full gig by transferring a large file between some internal computer and the firewall. (Or if you have gig internet then just run a speed test)

    @stephenw10:

    If you want actual 1Gbps throughput, between any two firewalled interfaces, you need to step up to a more powerful CPU. A G1610T perhaps. You won't see more than ~700Mbps with that Atom.

    Steve

    Actually the atom processor is capped at ~450 mbps. I ended up just building a new firewall with a AMD A6-6400K black. I considered the celeron, but decided to go with an AMD because it's cheaper, and I couldn't find anything that looked like it could actually drive full gig in a mini box.

    **EDIT: the new cpu coupled with an intel nic and a realtek nic yields speed tests of 920mbps down and 875 mbps up good enough for me :)



  • Thats good enough for pretty much anybody  ;)

    I like AMD - Seems to work well in this application.


  • Netgate Administrator

    I'm actually quite surprised you couldn't get more than 450Mbps. I would have expected at least 500 with Broadcom NICs. With Intel NICs and some tuning you should see over 600Mbps with a 1.8GHz atom.

    Steve


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