vlan over Lacp

Domdas · March 2021

hello, my scenario is :

switch 1 gs 1920

-port 26, 25,9,10 vlan20 fixed tagging

-port 26 to router

-port 6 vlan20 fixed untag

-port 25, 9 ,10 LACP link aggregation to switch 2

switch 2 gs 1900-24e

- port 5,6,7 LACP link aggregation to switch1 , vlan trunking

- port 21,22,23 LACP link aggregation to switch3 , , vlan trunking

switch 3 gs 1920

-port 25, 26, 27 vlan20 fixed tagging

-port 1 vlan20 fixed untag

-port 25, 26, 27 LACP link aggregation to switch 2

problem :

no connection from port 1 switch 3 to router, everything else works great

thanks for help Dominik

Sakura_T · March 2021

You should also set PVID 20 for port 1 of switch 3 in order to reach VLAN 20 interface on the router.

Domdas · March 2021

thank you Sakura , i forgot to write it

update:

PVID 20 for port 1 switch 3 and port 6 switch 1 was already set it

Zyxel_Melen · March 2021

Hi @Domdas,

Welcome to Zyxel community!

According to your description, i draw a topology below, could you check if my topology is same as yours?

Image: https://us.v-cdn.net/6029482/uploads/editor/zm/ol2zz5s41muo.png

If yes, could you do a test is that try to sequentially ping Switch 3, 1 from client and share us the result?
By the way, kindly ask what device is port 6 switch 1 connect to?

Zyxel_Melen · April 2021

Hi @Domdas,

I would like to notice VLAN trunking in GS1900 is different to GS1920.
You need to enable VLAN trunking on port LAG when you use LACP. You can see the example below.

vlan over Lacp

All Replies

Categories

Switch Help Center