McDATA ULTRANETTM EDGE STORAGE ROUTER 3000 - Manual (Page 412)

J-4 UltraNet™ Edge Storage Router 3000 User Guide
Configuration Worksheets
ATM WAN
Configuration
Worrksheet Complete both rows labeled 1x1 and 2x2 if you are configuring a 2x2.
See Figure for an example, along with the relationship to the
hardware configuration