Virtual Ports Modes; Vport-S-Tag Mapping; Vport-Vlan Mapping; Ufp Vport Mode - Lenovo RackSwitch G8264 Application Manual

Virtual Ports Modes

vPort-S-Tag Mapping

vPort-VLAN Mapping

UFP vPort Mode

Tunnel Mode

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A single physical switch port is configured with virtual ports (vPorts). Each UFP
channel connects the server NIC with a switch vPort. Properties that are defined
for a vPort, such as native VLAN and bandwidth, are applied to the traffic that
belongs to the vPort.
Note: A maximum of eight vPorts can be configured for each physical switch port.
A vPort can also be identified with an S‐tag (service tag or outer tag). When a vPort
is initialized, the switch communicates the UFP channel ID of the vPort to the
server NIC. When the server NIC or switch transmit frames, they add this S‐tag to
indicate the vPort or vNIC to which the packet is being transmitted. No VLAN
mapping is required. Such packets can be single tagged or double tagged (with
S‐tag).
In local domain data path type, the switch and server identify the vPort and vNIC
by the port and VLAN tag in the incoming and outgoing packets. Because no two
vPorts carry traffic for the same VLAN, the port‐and‐VLAN combination must be
uniquely mapped to a vPort.
The UFP mode is configured based on the type of switching domain (single VLAN
or multiple VLANs) where the vPort is connected.
 Use local domain data path types for trunk or access mode.
 Use pass‐through domain data path types for tunnel mode. In tunnel mode, a
vPort can belong to only one VLAN.
Use the following command to configure UFP vPort mode:
RS G8264(config)# ufp port <num> vport <num>
RS G8264(config_ufp_vport)# network mode {access|trunk|auto|tunnel|fcoe}
Default mode is 'tunnel'
In tunnel mode, a vPort can belong to only one VLAN. An outer tag with the
vPort's VLAN ID is inserted in packets that egress the vPort. The inner VLAN tag
remains unchanged. The switch processes packets based on the outer tag. When all
the ports or vPorts that belong to a particular VLAN are placed in tunnel mode,
they belong to one pass‐through domain.
Use tunnel mode to send all VM data traffic to an upstream switch, for Layer 2 or
Layer 3 processing, in one domain. In such cases, the UFP port or vPort must be in
tunnel mode and the upstream switch port must be in 802.1Q trunk mode.
Note: Two vPorts on a physical port cannot be members of the same VLAN.
Chapter 25: Unified Fabric Port
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