One controller card per chassis – Allied Telesis AT-SBx81CFC960 User Manual
Page 273
SwitchBlade x8106 Chassis Switch and AT-SBx81CFC960 Card Installation Guide
Section III: Building a Stack with VCStack Plus
273
Cabling Configurations for the Stacking Transceivers
This section illustrates the cabling configurations for the stacking
transceivers.
One Controller
Card Per Chassis
Figure 176 illustrates the correct wiring configuration for the fiber optic
wires for the stacking transceivers when each chassis has only one AT-
SBx81CFC960 Controller Fabric Card. The transceiver in SFP+ slot 1 in
one controller card is connected to the transceiver in SFP+ slot 1 in the
card in the other chassis, the transceiver in SFP+ slot 2 is connected to the
transceiver in SFP+ slot 2 in the other chassis, and so on.
Figure 176. Cabling the Stacking Transceivers When Both Switches have
One Controller Card
Please note the following:
The trunk has a maximum bandwidth of 40Gbps when each
chassis has one controller card and the trunk has four links.
The switches will form the stack even if the transceivers are cabled
incorrectly such that the wires between transceivers crossover
(e.g., the transceiver in SFP+ slots 1 is connected to the
transceiver in SFP+ slot 2). However, the bandwidth of the trunk is
reduced.