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Installing the Nortel Ethernet Routing Switch
Cascade down
In a cascade down configuration, the base unit is located at the top of the
stack. The system automatically numbers the physical units based on the
designated base unit (Unit 1). The cable connected to the Cascade Down
connector of the base unit terminates in the Cascade Up connector on the
next unit in the stack, which is located below the base unit. This next unit
is designated Unit 2. The stack is wired downward through the units and
the system continues to number in this manner throughout the stack. In this
configuration, the base unit discovers the stack in a cascade down (stack
down) direction. The following illustration demonstrates a typical cascade
down (stack down) configuration.
Cascade Down (Stack Down) configuration
1. Base Unit
2. Last Unit
3. Cascade Cable
4. Cascade Cable
Note: Since many network management software packages assume a
cascade down (stack down) configuration, Nortel recommends that you
use a cascade down configuration.
Nortel Ethernet Routing Switch 4500 Series
Installation Guide
NN47205-300
02.01
Standard
5.0
23 February 2007
Copyright © 2007, Nortel Networks
Nortel Networks Confidential
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Summary of Contents for 4500 Series
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