Consider the following factors concerning the allocation of logical
paths by control units:
- Control units allocate logical paths dynamically on a first-come-first-served
basis.
- Control units do not manage the allocation of logical paths. They
allow channels to compete for logical paths until all the logical
paths of the control unit are used.
- Control units vary in the number of logical paths they support.
See Table 1.
- Some control units that support a mix of parallel and ESCON ports can reduce the number
of logical paths allocated to ESCON channels
because they reserve a logical path for each parallel port.