Open vSwitch with DPDK vhostuser vs vhostuserclient port for BIG-IP VM
vhost-user vs. vhost-user-client¶
Open vSwitch provides two types of vHost User ports:
vhost-user (dpdkvhostuser)
vhost-user-client (dpdkvhostuserclient)
vHost User uses a client-server model. The server creates/manages/destroys the vHost User sockets, and the client connects to the server. Depending on which port type you use, dpdkvhostuser or dpdkvhostuserclient, a different configuration of the client-server model is used.
For vhost-user ports, Open vSwitch acts as the server and QEMU the client. This means if OVS dies, all VMs must be restarted. On the other hand, for vhost-user-client ports, OVS acts as the client and QEMU the server. This means OVS can die and be restarted without issue, and it is also possible to restart an instance itself. For this reason, vhost-user-client ports are the preferred type for all known use cases; the only limitation is that vhost-user client mode ports require QEMU version 2.7. Ports of type vhost-user are currently deprecated and will be removed in a future release.
https://docs.openvswitch.org/en/lates...
https://docs.openvswitch.org/en/lates...
