Red Hat Enterprise Virtualization is able to expose three different types of network interface controller to guests. The type of network interface controller to expose to a guest is chosen when the guest is created but is changeable from the Red Hat Enterprise Virtualization Manager.
The e1000
network interface controller exposes a virtualized Intel PRO/1000 (e1000) to guests.
The virtio
network interface controller exposes a para-virtualized network device to guests.
The rtl8139
network interface controller exposes a virtualized Realtek Semiconductor Corp RTL8139
to guests.
Multiple network interface controllers are permitted per guest. Each controller added takes up an available PCI slot on the guest. Information on the number of PCI devices that can be exposed to each guest is available in
Section B.6, “Guest Requirements and Support Limits”