Q-Logic 2-8C Manuel D’Utilisation
3 – Planning
Multiple Chassis Fabrics
Multiple Chassis Fabrics
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3.4.3.3
Multistage Topology
A Multistage topology describes a fabric in which two or more edge switches
connect to one or more core switches. Each additional core switch increases the
bandwidth to each edge switch by 200 MB/s. The Multistage fabric shown in
connect to one or more core switches. Each additional core switch increases the
bandwidth to each edge switch by 200 MB/s. The Multistage fabric shown in
has the following characteristics:
Each link contributes up to 200 MB/s of bandwidth between chassis.
Competition for this bandwidth is less than that of a cascade topology, but
greater than that of the mesh topology.
Competition for this bandwidth is less than that of a cascade topology, but
greater than that of the mesh topology.
Latency between any two device ports is no more than two chassis hops.
26 Fibre Channel ports are available for devices
Figure 3-3. Multistage Topology
Edge Switch
Edge Switch
Edge Switch
Core Switch