ExtremeSwitching (EXOS)

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Speed Negotiation

  • 1.  Speed Negotiation

    Posted 08-21-2015 04:07
    Hi Team,

    I am using x670-48t switches and all of the ports available are of 1G/10G speed.But the device with which I want to connect has a port of speed 100 mbps.

    When I am trying to downgrade the port speed to 100 mbps using command :
    configure ports 21 auto on speed 100 duplex full or
    configure ports 21 auto off speed 1000 duplex full

    It throws an error mentioning the port does not support 100 Mbps.

    Is there any way by which I can downgrade the port speed to 100 Mbps.

    With Regards,
    Kalyan Brata Majumder.

  • 2.  RE: Speed Negotiation

    Posted 08-21-2015 04:21
    No the chipset behind the port dosent support this.

  • 3.  RE: Speed Negotiation

    Posted 08-21-2015 04:31
    Hi Kalyan,

    I was able to successfully hardcode the speed to 100Mbps on port# 3 in a X670V-48t

    Command used to execute:-

    * SW3.4 # conf port 3 auto off speed 100 dup full

    * SW3.6 # show port 3 inf detail
    Port: 3
    Virtual-router: VR-Default
    Type: UTP
    Random Early drop: Unsupported
    Admin state: Enabled with 100M full-duplex
    Link State: Ready
    Link Ups: 0 Last: --
    Link Downs: 0 Last: --

    VLAN cfg:
    Name: remote_vlan, 802.1Q Tag = 1000, MAC-limit = No-limit, Vir tual router: VR-Default
    Port-specific VLAN ID: 1000
    STP cfg:

    Trunking: Load sharing is not enabled.

    EDP: Enabled

    EEE: Disabled
    ELSM: Disabled
    Ethernet OAM: Disabled
    Learning: Enabled

    What is the software version running on the X670v-48t switch?

  • 4.  RE: Speed Negotiation

    Posted 08-21-2015 04:37

    In addition to the EXOS Release, please share the output of "show port 21 configuration no-refresh".

  • 5.  RE: Speed Negotiation

    Posted 02-03-2021 13:14

    Hi Team,

               Kindly suggest regarding following practical case If I connect a p.c/laptop with 10/100 lan card capacity to a 1 gbps port switch port congestion/packet drop might happen???

    My switch is X440G2-48p-10G4

    Thanks in advance