Multistage Topology
Multistage Bandwidth
Multistage topology has the best bandwidth. All T_Ports from each IO/T chassis connect to all other IO/T chassis in the same number of chassis hops (three) no matter how large the fabric is. Thus the useful interconnection bandwidth from each IO/T chassis to any other IO/T chassis increases by 100MBs per T_Port. It is possible in Multistage topology to devote half of the chassis bandwidth to T_Ports thus providing as much as 800 MBytes per second bandwidth between any two IO/ T chassis.
Multistage Physical Distance Between Chassis
You may locate the CC chassis in the center of a circle with a radius of the maximum cable length allowed by the selected GBICs and interconnection media.
Multistage Zoning
Sanbox Switch chassis support
Hard Zones, however, require zoned T_Port interconnections between chassis which contain ports in the same Hard Zone. That is, if a particular Hard Zone is distributed across chassis boundaries, each piece of that Hard Zone and its inter- connecting T_Ports must be assigned to the same Hard Zone number. This makes interconnections between pieces of the same Hard Zone much like the interconnec- tion of chassis.
NOTE:
Also, remember that mixing of topologies is not allowed. If the topology of the chassis is Multistage, then the interconnection of the Hard Zones must also be accomplished in Multistage topology.
MKII Compatibility
SANbox switch fabrics support MKII chassis in Multistage topologies. The MKII switches should be used only as IO/T chassis, while the SANbox switches can be IO/T or
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Installer’s/User’s Manual |
