Dual Lan Configuration; Overview; Rules Of Dual Configuration On Fault Tolerant Server Series - NEC NovaScale R630 User Manual

DUAL LAN CONFIGURATION

The Fault Tolerant Server series builds a dual LAN configuration by using "Stratus emb-EB 2-Port Gigabit Adapter,"
mounted as standard on the CPU/IO module and "Intel(R) PRO/1000 MT Server Adapter" and "Intel(R) PRO/1000 MF
Server Adapter" inserted in the extended PCI slots, .

Overview

The dual LAN configuration is of two types as described below:
Adapter Fault Tolerance (AFT)
Adapter Fault Tolerance (AFT) is a feature that places more than one LAN controller on the same LAN (same
segment), and automatically switches the process of the primary controller to the backup controller when any
trouble occurred on the primary.
Adaptive Load Balancing (ALB)
Adaptive Load Balancing (ALB) is a feature that connects more than one LAN controller to the same hub and
enhances the throughput by operating packet transmission from the server.
Receive Load Balancing (RLB) is enabled by default. When RLB is enabled, the receiving throughput is enhanced.
The other modes, "Static Link Aggregation" and "IEEE 802.3ad Link Aggregation," do not contribute to enhancement
against a fault. When a fault occurs, the communication performed on the controller with the fault is not taken over by
the backup controller but lost.

Rules of Dual Configuration on Fault Tolerant Server series

Be sure to make the setting of dual network configuration on the server.
When building dual configuration, be sure to use at least one adapter of CPU/IO module 0 and of 1 individually.
Example1) Configure the dual network which enhances the service life by using all adapters.
CPU/IO module 0
Network
Example 2) Configure the dual network which corresponds to multiple LAN connection.
CPU/IO module 0
Network 1
Network 2
CPU/IO module 1
CPU/IO module 1
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