Figure 18: Invalid Trunk Using Both Direct Connect And Fiber Optic Cables On At-Xem2-4Qs Line Cards - Allied Telesis AT-SB*908 GEN2 Installation Manual

AT-SBx908 GEN2 Installation Guide for Virtual Chassis Stacking
 The AT-XEM2-4QS Line Card also supports direct connect cables,
called AT-QSFPICU and AT-QSFP3CU cables. As with the AT-
XEM2-12XT Line Card, you can build stack trunks using AT-XEM2-
4QS Line Cards with either direct connect cables or fiber optic
transceivers, but not both. Figure 18 is an example of an invalid
trunk on AT-XEM2-4QS Line Cards because it uses both direct
connect and fiber optic cables.
Chassis 1
Wiring closet 1
AT-QSFPCU
direct connect
cable
Chassis 2
AT-QSFPSR4 or
AT-QSFPLR4
fiber optic
transceivers
and cables
Chassis 3
Wiring closet 2
Figure 18. Invalid Trunk Using Both Direct Connect and Fiber Optic Cables
on AT-XEM2-4QS Line Cards
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