Configure DHCP server on vEdge cloud subinterface

[Cioby]

Hello,

I have an SD-WAN topology using vEdge cloud devices version 19.1.

I configured the template on the service side VPN to use sub-interfaces and distribute dynamic IPs through DHCP to LAN clients .

I have a subinterface in VPN 1 ge0/2.20 and the main physical interface ge0/2 in VPN 0. Both interfaces are up, MTU on subinterface is 1496 and DHCP server config was applied successfully through template.

The main problem is that I cannot see any DHCP traffic passing using wireshark.

I also setup static IP on the LAN host but I cannot reach the subinterface IP (default gateway).

I cannot find any configuration examples using DHCP server on subinterfaces. Can you guide me how to troubleshoot this or can anyone confirm this is working ?

Note! Upon digging deeper it seems there is no ARP between connected devices.

[Cioby · Accepted solution]

Problem solved. 

On the deployment documents it says

Viptela software supports E1000 and Virtio vNICs. It is recommended, however, that you use the Virtio vNICs.

It seems that virtio vNICs have issue cu subinterfaces and VLANs. Once I switched the vNIC to Intel E1000 things started to work fine