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Thread: Lan 10 Mb up 100 Mb down

  1. #1
    Join Date
    Jun 2008
    Beans
    2

    Lan 10 Mb up 100 Mb down

    I'm running hardy with on a lan and connecting to a server running hardy server. When I run iperf I'm getting:

    foxops@foxops:~$ iperf -c sentry -f m -r
    ------------------------------------------------------------
    Server listening on TCP port 5001
    TCP window size: 0.08 MByte (default)
    ------------------------------------------------------------
    ------------------------------------------------------------
    Client connecting to sentry, TCP port 5001
    TCP window size: 0.02 MByte (default)
    ------------------------------------------------------------
    [ 5] local 192.168.3.3 port 50177 connected with 192.168.3.2 port 5001
    [ 5] 0.0-10.4 sec 13.1 MBytes 10.6 Mbits/sec
    [ 4] local 192.168.3.3 port 5001 connected with 192.168.3.2 port 47530
    [ 4] 0.0-10.1 sec 113 MBytes 94.1 Mbits/sec

    Any ideas? Both cards are 100 full duplex:
    Laptop-
    foxops@foxops:~$ sudo ethtool eth0
    [sudo] password for foxops:
    Settings for eth0:
    Supported ports: [ TP ]
    Supported link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    1000baseT/Half 1000baseT/Full
    Supports auto-negotiation: Yes
    Advertised link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    1000baseT/Half 1000baseT/Full
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: Twisted Pair
    PHYAD: 0
    Transceiver: internal
    Auto-negotiation: on
    Supports Wake-on: pg
    Wake-on: d
    Current message level: 0x000000ff (255)
    Link detected: yes

    Server-
    foxops@sentry:~$ sudo ethtool eth0
    [sudo] password for foxops:
    Settings for eth0:
    Supported ports: [ TP MII ]
    Supported link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    Supports auto-negotiation: Yes
    Advertised link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: MII
    PHYAD: 1
    Transceiver: internal
    Auto-negotiation: on
    Supports Wake-on: g
    Wake-on: g
    Current message level: 0x00000007 (7)
    Link detected: yes

    Anyone have any experience with a card pulling 100 Mb down and sending 10 Mb up?

  2. #2
    Join Date
    Dec 2004
    Location
    Oregon, USA
    Beans
    278
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Lan 10 Mb up 100 Mb down

    Maybe I can learn something here. I don't know anything about iperf. Why are the TCP window sizes different between server & client?

  3. #3
    Join Date
    Jun 2008
    Beans
    2

    Re: Lan 10 Mb up 100 Mb down

    Quote Originally Posted by ModelM View Post
    Maybe I can learn something here. I don't know anything about iperf. Why are the TCP window sizes different between server & client?
    I'm not sure, both are stock (as in I haven't fooled with anything related to TCP). Time to check man pages.

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