Alcatel-Lucent 6850-48 ハードウェアマニュアル

Managing OmniSwitch 6850 Series Stacks

Stack Cabling

OmniSwitch 6850 Series Hardware Users Guide

page 4-17

OmniSwitch 6850 Series switches allow redundant stacking cable connections between the top-most and 
bottom-most switches in a stack.

Important. For a stacked configuration to have effective redundancy, a redundant stacking cable must be 
installed between the upper-most and bottom-most switch in the chassis at all times.

The figure below shows how the redundant connection between the top and bottom switches in the stack 
ensures that data will continue to flow throughout the stack, even in the event of a connection failure at 
one of the stacking cables. 

Data enters slot 1 via a 10/100/1000 Ethernet port. The 
data is passed to slot 2 over the stacking cable connection, 
then exits slot 2 via one of its 10/100/1000 Ethernet. 

The stacking connection between slots 1 and 2 goes 
down unexpectedly. Data can no longer travel directly 
between slot 1 and 2. 

However, because there is a redundant connection (the 
cable between slot 1 and slot 4), data is immediately 
passed to slot 4, then quickly traverses slot 3 and exits 
slot 2 to its destination.