VLAN trunk with Cisco


I have several Vyos routers and have successfully created a VLAN trunk between both a gig-e interface and a Cisco switch as well as between a bond interface and a Cisco switch.

Today, I am trying to create a trunk between a 10G interface on the Vyos and a 10G interface on a Cisco switch and I can’t get it to work. Here is the relevant configuration:


ethernet eth1 {
hw-id 00:1b:21:9e:6d:18
mtu 9000
smp_affinity auto
vif 210 {


interface TenGigabitEthernet1/0/1
switchport mode trunk
interface Vlan1
no ip address
interface Vlan210
ip address
Please note that newer Cisco switches don’t support ISL, so there’s no need to have a line in the interface config that says switchport trunk encapsulation dot1q.

The card in the Vyos is an Intel Intel X520-DA2 and the switch is a Cisco WS-C2960S-24TD-L.



I found my error - please disregard