Stack Cabling - Alcatel-Lucent OMNISWITCH 6800 Hardware User's Manual
Alcatel-lucent switch user manual
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Also See for OMNISWITCH 6800:
- Network configuration manual (926 pages) ,
- Management manual (292 pages) ,
- User manual (32 pages)
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Managing OmniSwitch 6800 Series Stacks
Stack Cabling
Switches are connected to each other in a stack with stacking cables. These stacking cables provide high-
speed, dual-redundant links between switches in a stack.
Stacking cables for OmniSwitch 6800 Series switches 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. In addition, for a stack to have effective redundancy, a redundant stacking
cable must be installed between the upper-most and bottom-most switch at all times. This provides effec-
tive failover in the event of a stacking link or module failure within the stack.
The diagram below shows two recommended stacking cable patterns. For detailed information on assem-
bling a stack and connecting the cables, refer to
ware Components."
Note. When planning the stack cabling configuration, keep in mind that the switch connected to stacking
port A of the primary switch will be assigned the secondary management role by default.
Examples of Stacking Cable Patterns (Chassis Rear Panels Shown)
OmniSwitch 6800 Series Hardware Users Guide
Chapter 2, "OmniSwitch 6800 Series Chassis and Hard-
A B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
A B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
Stack A
Stack B
June 2007
A stack of eight switches in a crossed (stacking port
A to stacking port B) configuration. Note that a
redundant stacking cable connection exists between
the top and bottom switches. This connection is
required for effective redundancy across the stack.
A stack of eight switches in a straight (stacking port A
to stacking port A; stacking port B to stacking port B)
configuration. Note that a redundant stacking cable
connection exists between the top and bottom
switches. Again, this connection is required for
effective redundancy across the stack.
Stack Cabling
page 3-15
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