Vlan trunk

Jacekr2 · December 2018

Hello,
i have two GS-1900-48 both with Vlan1 & Vlan4; both of them have a Trunk port which is in both Vlans, but I have only traffic i Vlan1.
but both ports belong to Vlan1 (there is no way they belong to two)
what I'm doing wrong?

JonasTan · December 2018

Hi @Jacekr2,

Good day.
All trunk port must be configured with tagged out to send tagged VLAN to the other devices.

To avoid misunderstanding, I would like to confirm that UT = Untagged out, right?
If yes, please modify your configuration as follows:

1- Vlan1 1-35 UT, Vlan4 37-48 UT, Trunk 36 (port in Vlan1 Tagged out, Vlan4 Tagged out)

2- Vlan1 1,3-36 UT, Vlan4 37-48 UT, Trunk 2 (port in Vlan1 Tagged out, Vlan4 Tagged out)
Note: VLAN1, port 2 must be tagged out.

Hope it helps!

Alfonso · December 2018

Hi @Jacekr2

Easy way to do it.

Switch 1 port A (vlan1) connected to Switch 2 port B (vlan1)
Switch 2 port C (vlan4) connected to Swtich 2 port D (vlan4)

But I am sure that you want to do it with an unique cable.
So you need 802.1q (Vlan tag) configuration.

Guide to configure vlan tag:

https://support.zyxel.eu/hc/en-us/articles/360001390814-How-to-configure-VLAN-on-a-Zyxel-Switch-Video-Tutorial-Series-VLAN-Configuration-

Best regards

Jacekr2 · December 2018

Thank you for your response,
I just want network traffic to take place over 1 cable.

Jacekr2 · December 2018

two GS1900-48

1- Vlan1 1-35 UT, Vlan4 37-48 UT, Trunk 36 (port in Vlan1 UT, Vlan4 UT)

2- Vlan1 2-36 UT, Vlan4 37-48 UT, Trunk 2 (port in Vlan1 UT, Vlan4 UT)

connected 36 - 2

what is wrong

Jacekr2 · December 2018

Zyxel_Jonas - you are great
thanks a lot
it works !!!!!!

Vlan trunk

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