iMac Pro incorrect port negotiation with Cisco RV340

Discussion in 'iMac' started by HDFan, May 16, 2019.

  1. HDFan macrumors 65816

    Joined:
    Jun 30, 2007
    #1
    I am testing a Cisco RV340 small business router/firewall with my iMac Pro and have found that it does not do proper port negotiation. I am limited to 100 Mbps (here on port 4):

    Screen Shot 2019-05-16 at 06.08.29.png

    I know that the cat 7 cable and and port work just fine as:

    1. I get the ~1000Mbps supported by my Xfinity modem when connected directly to a 10 Gbps switch

    2. I have seen over 1 Gbps when doing file transfers over the network

    3. Switching the devices on ports 1 & 4 also switches the negotiated speed rates

    I have tried manually changing the port specifications in Network Preferences/Advanced/Hardware but it makes no difference.

    Cisco is working the issue but I wanted to see if there is anything else I could do on the iMac end.
     
  2. HDFan thread starter macrumors 65816

    Joined:
    Jun 30, 2007
    #2
    Just received a response from Cisco. The RV340 will not negotiate a 10 Gbps connection with an iMac Pro. Asked them to file a feature request.
     
  3. codernova macrumors member

    codernova

    Joined:
    May 13, 2019
    #3
    That seems really odd. Which device is not up to standards? Maybe putting a 3rd party 10Gps switch between them would work for now?
     
  4. HDFan, May 20, 2019
    Last edited: May 22, 2019

    HDFan thread starter macrumors 65816

    Joined:
    Jun 30, 2007
    #4
    Don't know whether the problems is on the Cisco or the Apple end. Since they indicated that they would need to change their firmware rather than pointing their finger at Apple I am sort of assuming it's their problem.

    Yes, that is what I'm doing. My iMac Pro is connected to a QNAP 10 Gbps switch. The RV340 is between the QNAP and the cable modem. with the switch running off the RV340. modem > RV340 > QNAP switch > devices
     

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3 May 16, 2019