HP Virtual Connect Flex-10 10Gb Ethernet Module for c-Class BladeSystem - Manual (Page 74)

Network management 74
Server VLAN Tagging Support
This option provides explicit VLAN tagging support for server links, enabling each server link to be shared
among multiple networks. Users can map server VLAN-tagged Ethernet packets to specific networks,
which is essential in deploying server virtualization applications such as a virtual operating system
solution.
The following figure shows tunneled VLAN tags. On the dedicated, green network, both uplink and server
VLAN tags are tunneled through Virtual Connect unchanged. On the shared, red and blue networks,
uplink VLAN tags are mapped to networks. Untagged frames are mapped to the native VLAN, if present,
otherwise they are dropped. Server frames are untagged only, and tagged frames are dropped. Each
server port is connected to a single network.