Fabric Manager Users Guide, Version 6.1, Revision A - QLogic

2–Advanced Fabric Manager Capabilities
Fabric Unicast Routing
Figure 2-2. 2D and 3D Torus Structures
A torus fabric is structurally identical to a mesh, with the exception that the
switches located along the edges are "wrapped around" and connected together,
such that the fabric is seamless.
For this algorithm the fabric must be uniformly cabled such that a given port
number on every switch is connected in the same “direction”. For example in a 2D
mesh it may be that port 1,3 on every switch is connected to port 2,4 of the next
switch to form the X dimension and port 5,7 connected to port 6,8 of another
switch to form the Y dimension. Refer to Figure 2-3 for an example.
IB0054608-01 B 2-5