Figure 17: Example Of A 40Gpbs Trunk With Fiber Optic And Direct Connect Cables - Allied Telesis AT-x550-18XTQ Installation Manual

Wiring closet 1
Fiber optic link
with AT-QSFPSR4
or AT-QSFPLR4
transceivers
Wiring closet 2
 40Gbps trunks can have both fiber optic transceivers and AT-
QSFP1CU or AT-QSFP3CU direct connect cables. This is useful in
situations where switches are at different distances from each
other. Refer to Figure 17.
Figure 17. Example of a 40Gpbs Trunk with Fiber Optic and Direct
x550 Series Installation Guide for Virtual Chassis Stacking
Connect Cables
AT-QSFPCU
direct connect
cable
Fiber optic link
with AT-QSFPSR4
or AT-QSFPLR4
transceivers
AT-QSFPCU
direct connect
cable
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