Nortel BayStack 5520-48T-PWR Install Manual page 35

•
When power is applied to the stack the base unit initializes, typically
within sixty seconds, and the entire stack powers up as a single logical
unit.
•
A RS-232 communications cable can be attached to the console port of
any switch in the stack to establish a console connection.
•
A software upgrade can be performed on the stack from any switch
using the console interface, a Telnet session, the Web-based
management interface, or any SNMP-based management software.
•
The stack can be managed using a Telnet session, Web-based
management interface, or any SNMP-based management software
through any stack switch port.
Cascade down
The system automatically numbers the physical units based on the
designated base unit (Unit 1). In a cascade down configuration, the
base unit is physically located as the top unit in the stack. 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 physically
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 shows a cascade down (stack down) configuration.
Copyright © 2008–2009 Nortel Networks
ERS 5000 Series Installation
NN47200-300 04.03
13 April 2009
Placement options and cables 35