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Solarflare Server Adapter User Guide
Solarflare Adapters on Windows
Issue 20 © Solarflare Communications 2017 217
Creating Teams and VLANs
To set up teams and VLANs in Windows using SAM, see Using SAM to Configure
Teams and VLANs on page 168 .
To set up teams and VLANs in Windows using the sfteam command line tool, see
Sfteam: Adapter Teaming and VLAN Tool on page 200 .
Link Aggregation
Link aggregation is a mechanism for supporting load balancing and fault tolerance
across a team of network adapters and their associated switch. Link aggregation is
a partner teaming mode that requires configuration at both ends of the link. Once
configured, all links in the team are bonded into a single virtual link with a single
MAC address.
Two or more physical links are used to increase the potential throughput available
between the link partners, and also improve resilience against link failures. To be
aggregated, all links in the team must be between the same two link partner and
each link must be full ‐ duplex. Traffic is distributed evenly to all links connected to
the same switch. In case of link failover, traffic on the failed link will be re ‐ distributed
to the remaining links.
Link aggregation offers the following functionality:
• Teams can be built from mixed media (i.e. UTP and Fiber).
• All protocols can be load balanced without transmit or receive modifications to
frames.
• Multicast and broadcast traffic can be load balanced.
• Short recovery time in case of failover.
• Solarflare supports up to 64 link aggregation port groups per system.
• Solarflare supports up to 64 ports and VLANs in a link aggregation port group.
There are two methods of link aggregation, dynamic and static.
Dynamic Link Aggregation
Dynamic link aggregation uses the Link Aggregation Control Protocol (LACP) as
defined in the IEEE 802.1AX standard (previously called 802.3ad) to negotiate the
ports that will make up the team. LACP must be enabled at both ends of the link for
a team to be operational.
LACP will automatically determine which physical links can be aggregated, and will
then perform the aggregation.
An optional LACP marker protocol provides functionality when adding and removing
physical links ensuring that no frames are lost, reordered or duplicated.
Dynamic link aggregation offers both fault tolerance and load balancing.