GS1900-24EP get MAC of device connected to switch port

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IronKalli
IronKalli Posts: 4 image  Freshman Member
First Comment
edited February 25 in Switch

Hello everybody,

is there a way to get the MAC-address of the device which is connected to a given port of the GS1900?

I tried to filter the MAC-table of the GS1900 but it didn't show all active ports.

Thanks for any suggestions

Kalli

Accepted Solution

  • Zyxel_Melen
    Zyxel_Melen Posts: 4,616 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
    Answer ✓

    Hi @IronKalli

    Thanks for sharing the screenshot.

    May I check some details?

    1. What device is connecting on this port?
    2. Since MAC address entry has an aging time, 300 seconds, could you help to check if the device has any traffic when you can't find the MAC address on the MAC table?
    3. Can you find any MAC address for this port without filter?

    About the firmware upgrade, since the later firmware versions (after V2.80 patch 1) didn't encounter this issue, I'm unsure if the issue been fixed after firmware upgrade. You may give it a try.

    Zyxel Melen


All Replies

  • XiLeiHaLo
    XiLeiHaLo Posts: 16 image  Freshman Member
    First Comment First Answer Friend Collector Fourth Anniversary

    Use any third party SNMP tool to query your GS1900 with this standard OID .1.3.6.1.2.1.2.2.1.6, so you don't need to calculate the MAC address range by yourself.

  • Zyxel_Melen
    Zyxel_Melen Posts: 4,616 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate

    Hi @IronKalli

    I check my GS1900 with latest firmware version, and I can check the MAC table by all and specific port. Path: Menu > Monitor > Mac table.

    image.png image.png

    Could you share how did you filter? If possible, please record a video. Also, what's your device's firmware version?

    Zyxel Melen


  • IronKalli
    IronKalli Posts: 4 image  Freshman Member
    First Comment

    Hi

    thanks for your answer.

    My problem seems to be device related.

    It normally wokrs to see the MAC of any port as you described.

    But with some (a bit special) devices the MAC is not shown, even though the port is up

    Here is the firmware and port 9 shown

    image.png

    But the MAC filter definitely does not show any entry

    image.png

    I don't know what's happening here, but it is a phenomen which only shows with my special devices

    Do you think there is a firmware update I should try?

    Thanks and regards

    Kalli

  • Zyxel_Melen
    Zyxel_Melen Posts: 4,616 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
    Answer ✓

    Hi @IronKalli

    Thanks for sharing the screenshot.

    May I check some details?

    1. What device is connecting on this port?
    2. Since MAC address entry has an aging time, 300 seconds, could you help to check if the device has any traffic when you can't find the MAC address on the MAC table?
    3. Can you find any MAC address for this port without filter?

    About the firmware upgrade, since the later firmware versions (after V2.80 patch 1) didn't encounter this issue, I'm unsure if the issue been fixed after firmware upgrade. You may give it a try.

    Zyxel Melen


  • IronKalli
    IronKalli Posts: 4 image  Freshman Member
    First Comment

    The connecting device is a Laser Line Triangulation scanner 'scanCONTROL 2900' manufactured by company microepsilon
    And you are right again, it is related to the traffic (the scanner had no traffic for quite a long period)
    When I connect to the device and produce some traffic, I am able to see it in the MAC table of the GS1900
    It disappears after a while, but is coming back when I produce traffic again

    Sorry, I had no knowledge of the aging time
    But now I know how to handle and have everything I need

    Thanks a lot for your help
    Kalli

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