NEC 5800/320MA Manuale Utente
Configuring Ethernet PCI Adapters
2-10
Express5800/320Ma: PCI Adapter Guide
You can assign any Ethernet PCI adapter supplied by NEC Solutions (America), Inc.
to any type of team, with some exceptions for static link aggregation teams. See
to any type of team, with some exceptions for static link aggregation teams. See
for details.
N O T E
Also see the PROSet online help for additional teaming
information and restrictions.
information and restrictions.
Adapter Fault Tolerant Teams
An Adapter Fault Tolerant (AFT) team is a set of two or more Ethernet PCI adapters
that provide redundant connections to a single switch. In an AFT team, the primary
adapter executes all transmit and receive functions for the team. The secondary
adapter becomes active after a failover to the secondary adapter occurs, generally
when the primary adapter fails.
that provide redundant connections to a single switch. In an AFT team, the primary
adapter executes all transmit and receive functions for the team. The secondary
adapter becomes active after a failover to the secondary adapter occurs, generally
when the primary adapter fails.
Switch Fault Tolerant Teams
A Switch Fault Tolerant (SFT) team is similar to an AFT team, except that SFT allows
you to connect the team members to separate switches for increased fault resiliency.
An SFT team must contain exactly two Ethernet PCI adapters, and you must connect
each adapter to a different switch that supports the Spanning Tree Algorithm. As in an
AFT team, the primary adapter executes all transmit and receive functions for the team.
The secondary adapter becomes active after a failover to the secondary adapter
occurs, generally when the primary adapter fails or its link to the switch fails.
you to connect the team members to separate switches for increased fault resiliency.
An SFT team must contain exactly two Ethernet PCI adapters, and you must connect
each adapter to a different switch that supports the Spanning Tree Algorithm. As in an
AFT team, the primary adapter executes all transmit and receive functions for the team.
The secondary adapter becomes active after a failover to the secondary adapter
occurs, generally when the primary adapter fails or its link to the switch fails.
Adaptive Load Balancing Teams
In an Adaptive Load Balancing (ALB) team, both the primary and secondary Ethernet
PCI adapters execute the transmit function, while only the primary adapter executes
the receive function. (ALB functionality also includes AFT features.)
PCI adapters execute the transmit function, while only the primary adapter executes
the receive function. (ALB functionality also includes AFT features.)
To prevent packet-order problems, one adapter in an ALB team transmits all packets
that have the same destination. In addition, only the primary adapter transmits
broadcast packets and non-Internet Protocol (IP) packets.
that have the same destination. In addition, only the primary adapter transmits
broadcast packets and non-Internet Protocol (IP) packets.
You must connect all adapters in an ALB team to the same switch, or to two or more
hubs that connect to the same switch.
hubs that connect to the same switch.
N O T E
When you create a new ALB team, PROSet automatically
sets the Receive Load Balancing property for the team
to On to balance received traffic over all members of the
team. However, enabling this feature for ALB teams can
cause connectivity problems. If the primary adapter in the
team fails when this feature is enabled, the Ethernet
address of the team automatically changes to the MAC
sets the Receive Load Balancing property for the team
to On to balance received traffic over all members of the
team. However, enabling this feature for ALB teams can
cause connectivity problems. If the primary adapter in the
team fails when this feature is enabled, the Ethernet
address of the team automatically changes to the MAC