Alcatel OS6850-P48 User Guide - Page 82

Setting Up a Stacked Configuration OmniSwitch 6850 Series Chassis and Hardware Components Setting Up a Stacked Configuration Rack Mounting Stacked Configurations To rack mount a stacked configuration, install all switches that are to be included in the stacked configuration as described on pages 2-60 through 2-61. Up to eight switches may be stacked to form a single virtual chassis. Note. You cannot mix OS6800 and OS6850 switches in a stack. Note. When rack mounting multiple switches in a stacked configuration, be sure to place all switches in vertically-adjacent rack positions. This will ensure that all required stacking cables will have adequate length for the installation. Cabling Stacked Configurations In order to connect stacked switches into a virtual chassis, all modules in the stack must be connected via stacking cables (provided). Redundant Stacking Cable Connections In addition to the stacking cables installed between adjacent switch, the top-most switch and bottom-most switch in the stack must be connected using a redundant stacking cable. Refer to Chapter 6, "Managing OmniSwitch 6850/6850E Series Stacks" for more information on the redundant stacking cable connection. Supported Cabling Patterns Each switch provides two stacking: stacking port A and stacking port B. Cables can be connected in any pattern. In other words, the cable connected to stacking port A of one switch can be connected to either stacking port A or stacking port B of the adjacent switch. However, it is strongly recommended that the cabling pattern remains consistent across the stack. For a cabling diagram and additional information on cabling the stack, refer to Chapter 6, "Managing OmniSwitch 6850/6850E Series Stacks." Cabling Steps 1 Before inserting a stacking cable into one of the stacking, be sure to orient the stacking cable connector properly. The wide portion of the connector must be facing up. Refer to the diagram below for more information. Connector Top When orienting the stacking cable connector, be sure that the wider portion of the connector is facing up as shown. Otherwise, the stacking cable will not fit properly in the chassis' stacking port. End View of Stacking Cable Connector page 2-62 OmniSwitch 6850/6850E Series Hardware Users Guide June 2011