High Availability for Local Area Networks
Because of the mission-critical character of SAP R/3 for a business, high-availability considerations and failure-tolerant architectures have to be taken into account when local area network solutions for SAP are implemented. To summarize the SAP infrastructure recommendations mentioned before, let's have a look at the ideal network:
The cabling is physically structured according to ISO 11801.
The infrastructure is based logically on a hierarchical star topology.
The network operates mono-protocol using the TCP/IP family only.
All servers are concentrated in a data center and have high-speed connections to a central backbone switch.
The backbone switch provides trunking, VLAN, ABC, and so on, as necessary. ...
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