VLANs - Zyxel --- Cisco

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  • mar0001
    mar0001 Posts: 8  Freshman Member
    First Comment Friend Collector
    edited April 3

    A trunk (tagged port) means I can send more than one VLAN across. This is done in all the networks.

    Unfortunately, I cannot wait any longer for a solution. It is a very expensive switch and I decided not to keep it. I am sure this is sth that will work and I am making a mistake but this is a very expensive exercise ;-)

    I wish there was a clear instruction showing a lab with a basic trunk between two switches a few devices in 2-3 VLANs, even using two Zyxel switches.

  • PeterUK
    PeterUK Posts: 3,709  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    edited April 3

    Sure I get why you would want to trunk I have never needed to trunk my understanding of how a trunk works is

    Switch A ----Switch B----Switch C

    Where you have many of the same VLANs on A and C but instead of having to do all the VLANs again for B you have Switch B trunk

  • Zyxel_Melen
    Zyxel_Melen Posts: 3,116  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
    edited April 10

    Hi @mar0001,

    Please help check the MAC table on XMG1915.

    image.png

    In my lab, with the same VLAN configuration as yours, I connect the XMG1915 port 8 to Cisco 3750 port 8. When the Cisco's VLAN 10 line protocol is up, I can see Cisco's mac on XMG1915's MAC table. And the PC is on port 15.

    I also can see XMG1915's and PC's MAC on Cisco.

    image.png

    My Pc also gets an IP address from Cisco.

    image.png
    image.png

    And ping the Cisco VLAN 10 interface, which is 192.168.10.10.

    image.png
    image.png

    However, if the VLAN 10 line protocol is down, I can't find it on XMG1915's MAC table.

    Since your VLAN 10 setting on XMG1915 is correct, I think there might be a misconfiguration on your Cisco switch.

    About the Cisco ping XMG1915, please correct port 8 VLAN1 from tagged to untagged since VLAN1 is usually a native VLAN for Cisco.

    Zyxel Melen


  • Xydocq
    Xydocq Posts: 39  Freshman Member
    First Comment First Answer Friend Collector
    edited April 7

    hello @mar0001

    looking at this pic

    {1FF80AEA-58FB-458E-A234-B5E32A008769}.png

    Short question, what is native VLAN on Port 8-10 if all VLANs are tagged?

    I could be wrong, but VID1 is default VLAN1 and also the general native VLAN1 and therefor should be untagged on all Trunk-Ports, native VLAN on Access-Port 15 is VLAN10. The only thing to tag are additional VLANs on a Trunk-Port.

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