VXLAN Flood and Learn with Multicast

[lagapidis (Lazarus Agapidis)]

Hello Aaron

@allen123456d

If I change the topology to this, do we need to change the config at all?
I need to extend the vlan 1010 from the right switch to the left switch…

Yes that is correct. If you replace H1 and H2 with two switches, as you have done in your diagram, then those switches will simply need to be configured with access ports on VLAN 1010. No change in the config of VTEP1 and VTEP2 is necessary. From the moment the encapsulation untagged command is used on Gi2 of both VTEP1 and VTEP2, these ports can connect to hosts or to access ports of switches.

@allen123456d

and what about trunks, VXLAN ports(service instance) doesn’t support trunks? so that we can tag the traffic from downstream on any VLAN and send it over the vxlan tunnel to another destination? in other word can Gi2 be a trunk port that goes to a switch?

Yes, it is possible to make Gi2 on the VTEP devices function as a trunk. This is achieved using the encapsulation dot1q command in which you specify the VLAN(s) that will be tagged. For example:

encapsulation dot1q vlan 5-10,12

The above command specifies that VLANs 5, 6, 7, 8, 9, 10, and 12 are allowed on this port. Any switch connected to such a port should be configured as a trunk port with the same allowed VLANs. This is similar in concept to the router on a stick configuration.

I hope this has been helpful!

Laz