If sites are deployed for high availability (Active-Active or Active-Standby) and eth0 interface of VOS at given site is not connected to internal management network, connect eth0 directly between VOS devices at that site. This will help to gain access through one of device using out of band management if other device is encounter any connectivity issues to Controller/Director.

By default, each VOS device will have IP of 10.10.10.10/8 on eth0. We can leave 10.10.10.10/8 on one device and configure other device eth0 to 10.10.10.11/8. This configuration can be done any time whenever access is needed via other device.