Network Infrastructure
Network infrastructure (switches, hubs, routers, and bridges) is considered external to the system and is commonly overlooked as being a key component of system availability. The network infrastructure enables communication between peer and client systems at the local area network (LAN) and wide area network (WAN) levels. Therefore, network infrastructure scalability and availability directly affect system availability, even in a clustered environment.
A best practice is to use the network adapter failover (NAFO) software that the Sun Cluster 3.0 infrastructure provides to improve availability of the public network controllers. This improvement is accomplished by switching all network I/O to an alternate controller if the ...
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