x550 Series Installation Guide for Virtual Chassis Stacking
57
The cables of 40Gbps QSFP+ stack trunks must cross over to
different slots 17 and 21 on the switches. That is, the connection of
the transceiver in slot 17 must connect to the transceiver in slot 21
in the next switch. Figure 15 shows the correct wiring
configurations for stacks of two, three, and four switches.
Caution
The switches will not form a stack if the connections do not cross
over to different QSFP+ ports, but will instead operate as
stand-alone devices.
E78
Figure 15. Cabling QSFP+ Ports 17 and 21 for a Stack Trunk
Stack of Two Switches
Stack of Three
Stack of Four Switches
Summary of Contents for AT-x550-18XSPQm
Page 8: ...Contents 8 ...
Page 12: ...Tables 12 ...
Page 16: ...Preface 16 ...
Page 50: ...Chapter 1 Overview 50 ...
Page 78: ...Chapter 2 Virtual Chassis Stacking 78 ...
Page 90: ...Chapter 3 Beginning the Installation 90 ...
Page 110: ...Chapter 4 Installing the Switch on a Table or in an Equipment Rack 110 ...
Page 124: ...Chapter 5 Installing the Switch on a Wall 124 ...