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VSW(4) Device Drivers Manual (sparc64) VSW(4)

vswvirtual network switch

vsw* at cbus?
vnet* at vsw?

The vsw driver provides a network switch using the services provided by the UltraSPARC Hypervisor as found on sun4v systems. It attaches a separate vnet(4) interface for each switch port. These ports can be added to a bridge(4) or veb(4) to create a functional network switch.

The vsw driver supports version 1.0 of the vNet protocol.

bridge(4), cbus(4), intro(4), netintro(4), veb(4)

The vsw driver first appeared in OpenBSD 4.7.

The vsw driver was written by Mark Kettenis <>.

July 21, 2022 OpenBSD-current