Alcatel-Lucent omni 6600 User Manual

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Managing OmniSwitch 6600 Family Stacks
Setting Up a Stacked Configuration
OmniSwitch 6600 Family Hardware Users Guide
September 2006
page 4-13
Redundant Stack Connection
The figure below shows how the redundant connection (provided by the OS66STK-CBL1M cable) 
between the top and bottom switches in the stack ensures that data will continue to flow throughout the 
stack, even in the unlikely event of a connection failure between two switches. 
Stacking Cable Redundancy Example
Switch 1
Switch 2
Switch 3
Switch 4
No Connection Failure
In this example, there is a VLAN with an 
ingress port on switch 1 and an egress port 
on switch 2. 
Data enters switch 1 via a 10/100 Ethernet 
Connection Failure Between Switches 1 
and 2
Here, the stacking connection between 
switches 1 and 2 has gone down unexpect-
edly. Data can no longer travel directly 
between switches 1 and 2. 
Switch 1
Switch 2
Switch 3
Switch 4