Vnic Groups In Dedicated Mode; Vnic Groups In Shared Mode - Lenovo RackSwitch G8264CS Application Manual

vNIC Groups in Dedicated Mode

vNIC Groups in Shared Mode

© Copyright Lenovo 2017
 Virtual machines (VMs) and other VEs associated with vNICs are automatically
detected by the switch when VMready is enabled (see Chapter
However, vNIC groups are isolated from other switch elements. VEs in vNIC
groups cannot be assigned to VM groups.
The vNIC group VLAN ID is placed on all vNIC group packets as an "outer" tag.
As shown in Figure 26, the outer vNIC group VLAN ID is placed on the packet in
addition to any regular VLAN tag assigned by the network, server, or hypervisor.
The outer vNIC group VLAN is used only between the G8264CS and the NIC.
Figure 26. Outer and Inner VLAN Tags
Within the G8264CS, all Layer 2 switching for packets within a vNIC group is
based on the outer vNIC group VLAN. The G8264CS does not consider the regular,
inner VLAN ID (if any) for any VLAN‐specific operation.
The outer vNIC group VLAN is removed by the NIC before the packet reaches the
server OS or hypervisor, or by the switch before the packet egresses any internal
port or external uplink port which does not need it for vNIC processing.
The vNIC group VLAN ID is placed on all vNIC group packets as an "outer" tag.
As shown in Figure 27, the outer vNIC group VLAN ID is placed on the packet in
addition to any regular VLAN tag assigned by the network, server, or hypervisor.
Figure 27. Outer and Inner VLAN Tags
vNIC-Capable Server
OS/Hypervisor
Regular
NIC attached outer
VLAN ID
vNIC group VLAN ID
Outbound
Packet
Outer tag sets vNIC;
NIC strips outer tag
Inbound
Packet
Within the G8264CS, all Layer 2 switching for packets within a vNIC group is
based on the outer vNIC group VLAN. The G8264CS does not consider the regular,
inner VLAN ID (if any) for any VLAN‐specific operation.
Ports with
vNICs
NIC
Switching uses outer tag;
Ignores regular VLAN
Switching uses outer tag;
Ignores regular VLAN
16, "VMready").
IBM Switch Ports without
vNICs
Switch does not
strip outer tag
Switch retains
outer tag
Chapter 14: Virtual NICs
243