NEC 5800/320MA manual Adapter Fault Tolerant Teams, Switch Fault Tolerant Teams

Models: 5800/320MA

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Configuring Ethernet PCI Adapters

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 “Static Link Aggregation Teams” on page 2-11for details.

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Also see the PROSet online help for additional teaming 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.

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.

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.)

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.

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.

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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

2-10Express5800/320Ma: PCI Adapter Guide

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NEC 5800/320MA manual Adapter Fault Tolerant Teams, Switch Fault Tolerant Teams, Adaptive Load Balancing Teams