Dell Emulex Family of Adapters - Manual (Page 749)

OneCommand NIC Teaming and VLAN Manager User Manual P009415-01A Rev. A
1. Overview
Receive-Side Scaling
749
For Hyper-V virtual machines that use the Failover, LACP and 802.3ad team types,
both the primary and secondary adapters do not have RSS support.
The OCe11102 UCNA does not have this limitation and is fully supported.
IEEE 802.3ad and LACP Team Types
IEEE 802.3ad and Switch-Controlled Teaming (LACP) are similar to link aggregation
static mode except that it uses the LACP to negotiate the ports that make up the team.
The LACP must be enabled at both the server and the switch for the team to operate. If
LACP is not available at both ends of the link, 802.3ad provides a static aggregation that
only requires both ends of the link to be in a link up state.
Note: You cannot disable an adapter port that is part of an 802.3ad static team. If you
do, I/O will fail because an 802.3ad team is switch dependent. When using
802.3ad static teams, you must disable links by disabling the switch port.
Because static aggregation provides for the activation of a member link without
performing the LACP message exchanges, it is not as reliable and robust as an LACP
negotiated link. LACP automatically determines which member links can be
aggregated and then aggregates them. It provides for the controlled addition and
removal of physical links for the link aggregation so that no frames are lost or
duplicated. The removal of aggregate link members is provided by the marker protocol
that can be optionally enabled for LACP-enabled aggregate links.
The link aggregation group advertises a single MAC address for all the ports in the
team. The MAC address of the team/aggregator can be the MAC addresses of one of
the NICs in the group.
The link aggregation control function determines which links may be aggregated. It
then binds the ports to an aggregator function in the system and monitors conditions to
determine if a change in the aggregation group is required. Link aggregation combines
the individual capacity of multiple links to form a high performance virtual link. The
failure or replacement of a link in an LACP trunk does not cause loss of connectivity.
The traffic fails over to the remaining links in the trunk.