Alcatel OS6850-P48 User Guide - Page 182

Stacking Cable Redundancy: Recovery Following a Stacking Link Failure

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Stack Cabling Managing OmniSwitch 6850/6850E Series Stacks 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. Stacking Cables Chassis Front Slot 1 Slot 2 Slot 3 Slot 4 1 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. Slot 1 Slot 2 Slot 3 Slot 4 2 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. Stacking Cable Redundancy: Recovery Following a Stacking Link Failure page 6-20 OmniSwitch 6850/6850E Series Hardware Users Guide June 2011

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Stack Cabling
Managing OmniSwitch 6850/6850E Series Stacks
page 6-20
OmniSwitch 6850/6850E Series Hardware Users Guide
June 2011
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.
Stacking Cable Redundancy: Recovery Following a Stacking Link Failure
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.
1
2
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.
Slot 1
Slot 2
Slot 3
Slot 4
Chassis Front
Stacking Cables
Slot 1
Slot 2
Slot 3
Slot 4