Data transfer #
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데이터 전송

팁 #

전송속도 #

1G 속도를 지원하는 네트워크 장비가 100M에 물렸을 때 속도가 안나오면, 다음처럼 auto negotiation 기능을 끄면 괜찮아 진다.

[root@node01 ~]# ethtool eth3
Settings for eth3:
    Supported ports: [ TP ]
    Supported link modes:   10baseT/Half 10baseT/Full
                            100baseT/Half 100baseT/Full
                            1000baseT/Full
    Supports auto-negotiation: Yes
    Advertised link modes:  10baseT/Half 10baseT/Full
                            100baseT/Half 100baseT/Full
                            1000baseT/Full
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: Twisted Pair
    PHYAD: 1
    Transceiver: internal
    Auto-negotiation: on
    Supports Wake-on: g
    Wake-on: d
    Link detected: yes

[root@node01 ~]# ethtool -s eth3 speed 100 duplex full autoneg off
[root@node01 ~]#
[root@node01 ~]# ethtool eth3
Settings for eth3:
    Supported ports: [ TP ]
    Supported link modes:   10baseT/Half 10baseT/Full
                            100baseT/Half 100baseT/Full
                            1000baseT/Full
    Supports auto-negotiation: Yes
    Advertised link modes:  Not reported
    Advertised auto-negotiation: No
    Speed: 100Mb/s
    Duplex: Full
    Port: Twisted Pair
    PHYAD: 1
    Transceiver: internal
    Auto-negotiation: off
    Supports Wake-on: g
    Wake-on: d
    Link detected: yes

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