Nortel business policy switch 2000 User Manual page 45

Table 2 Business Policy Switch 2000 LED descriptions (continued)
Label Type
Base Base mode
10/100 10/100 Mb/s
port speed
indicator
Color State Meaning
Green On The switch is configured as the stack base unit.
Off The switch is not configured as the stack base unit (or is
in standalone mode).
Blinking Stack configuration error: indicates that multiple base
units or no base units are configured in the stack.
Amber On This unit is operating as the stack configuration's
temporary base unit. This condition occurs automatically
if the base unit (directly downstream from this unit) fails.
If this happens, the following events take place:
•
•
This automatic failover is a temporary safeguard only. If
the stack configuration loses power, the temporary base
unit will not power up as the base unit when power is
restored. For this reason, you should always assign the
temporary base unit as the base unit (set the Unit Select
switch to Base) until the failed unit is repaired or replaced.
Green On The corresponding port is set to operate at 100 Mb/s, and
the link is good.
Blinking The corresponding port has been disabled by software.
Amber On The corresponding port is set to operate at 10 Mb/s, and
the link is good.
Blinking The corresponding port has been disabled by software.
Off The link connection is bad, or there is no connection to
this port.
Using the Business Policy Switch 2000 Version 2.0
The two units directly upstream and directly
downstream from the failed unit automatically wrap
their cascade connectors and indicate this condition
by lighting their Cas Up and Cas Dwn LEDs (see Cas
Up and Cas Dwn description in this table).
If the temporary base unit fails, the next unit directly
downstream from this unit becomes the new
temporary base unit. This process can continue until
there are only two units left in the stack configuration.
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