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Preliminar
y
Introduction 
SANbox-16HA Fibre Channel Switch
Installer’s/User’s Manual
59005-03 Rev. A
 Multi-Chassis Fabrics   
5-3
Choosing a Topology 
The topology you choose depends on the following major fabric requirements:
The size of the fabric (number of user ports required), 
The amount of latency the users can tolerate (number of chassis hops and 
interconnection media delay between the source port and the destination 
port),
The bandwidth between chassis (the number of T_Port paths between inter-
connected chassis), 
The physical distances required between users in a “campus” distributed 
fabric verses a centrally located fabric.
MKII compatibility. SANbox switch fabrics support MKII switches as IO/T 
chassis in mesh and Multistage topologies.
These topics are discussed for each topology later in this section.
NOTE:
In order to set up a multi-chassis fabric you are required to select a topology, cable 
the chassis together, and configure each chassis.
Configuration consists of assigning a stage type to a chassis which tells it which 
function it is to perform (IO/T or CC). In the case of a Cascade or Mesh topology, 
all chassis are the default stage type (IO/T). A Multistage switch consists of IO/T 
and CC chassis. For addressing purposes, you must also assign a Chassis Number 
to each chassis.
Refer to
 for information about choosing a fabric 
topology. After choosing the fabric topology, refer to 
 and