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Lukas_O's avatar
Lukas_O
Aspirant
Jun 11, 2019
Solved

GS750E: Device with one MAC but 2 Ports and Subnets on 2 VLANs , ARP issue?

Dear community, I have just replaced two GS724 with a GS750E as I was not using most of the capabilties of the GS724 anyway. The thing I was using is port based VLAN. I have a router providing 2 se...
  • Lukas_O's avatar
    Lukas_O
    Jun 12, 2019

    Hi there,

    Thanks for the reply. I absolutly did untick the ports and even tried pinging from one VLANed port to the other (using the appropriate network config). That failed, so isolation works.

    However I have solved my issue:

    I have been using the "port-based" VLAN option (Advanced) and ran into problems. I am now using real "802.1Q" VLAN (Advanced). What I did is:

    1. VLAN-Configuration: Create VLAN ID "100" and VLAN Name "Isolate"
    2. VLAN Membership: Tick all ports I want in VLAN "Isolate". I am not tagging so I took the "U" option. Apply.
    3. VLAN Membership: Untick the above ports from default VLAN 1. Apply.
    4. Port PVID: Set above ports to PVID "100"

    Cheers

    Lukas

     

     

     

Lukas_O's avatar
Lukas_O
Aspirant
Jun 12, 2019

Hi there,

Thanks for the reply. I absolutly did untick the ports and even tried pinging from one VLANed port to the other (using the appropriate network config). That failed, so isolation works.

However I have solved my issue:

I have been using the "port-based" VLAN option (Advanced) and ran into problems. I am now using real "802.1Q" VLAN (Advanced). What I did is:

  1. VLAN-Configuration: Create VLAN ID "100" and VLAN Name "Isolate"
  2. VLAN Membership: Tick all ports I want in VLAN "Isolate". I am not tagging so I took the "U" option. Apply.
  3. VLAN Membership: Untick the above ports from default VLAN 1. Apply.
  4. Port PVID: Set above ports to PVID "100"

Cheers

Lukas

 

 

 

schumaku's avatar
schumaku
Guru - Experienced User
Jun 12, 2019

Cools, using 802.1Q VLAN would have been be the next suggestion - that's the only thing we deploy on our networks, and such an issue would have caught us many times.

 

It would be worth opening a support case with Netgear so this suspect issue on the Port based [Basic and?] Advanced  VLAN is reviewed by the Netgear engineering. Probably Christian_R  can arrange the short-cut for this, thank you Chris!

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