Unsupported Trunks; Figure 35: Example Trunk Using Xem2-4Qs Line Cards; Figure 36: Unsupported Trunk With Different Numbers Of Links Between Switches - Allied Telesis x950 Series Installation Manual

Chapter 3: Virtual Chassis Stacking
Unsupported
Trunks
84
Figure 35. Example Trunk Using XEM2-4QS Line Cards
The following are examples of unsupported trunks.
In stacks of three or four switches, the number of links in the trunk

has to be the same on all switches. The trunk in Figure 36 is
unsupported because the middle switch is connected to the top
and bottom switches with two links each, while the top and bottom
switches are connected with only one link.
Figure 36. Unsupported Trunk with Different Numbers of Links Between
The cables in a trunk must be all the same type: They can be all

fiber optic cables, direct attach cables, or twisted pair cables.
Trunks cannot contain different types of cables. The trunk in Figure
37 on page 85 is unsupported because it has both fiber optic and
direct attach cables.
Switches