Avaya VSP 7000 Series Installing

Figure 17: Base unit switch and management ports
Temporary base unit
If a Base unit failure occurs, the next downstream unit (FI-down configuration), or furthest upstream
unit (FI-up configuration), becomes a Temporary Base unit (TBU). An amber Base LED indicates a
unit operating as the TBU.
Note:
The automatic failover process can continue to assign a TBU until there are only two units left in
the Stack.
• If a former Base unit rejoins the Stack, it operates as an NBU until the Stack is reset.
• If no FI-up or FI-down stack link is present between two NBUs, no TBU is assigned during
a Base unit failure.
The TBU is a temporary safeguard only. If the Stack loses power, the TBU does not power up as the
Base unit once power is restored. In a long term Base unit failure scenario, you are recommended
to configure the TBU as the Base unit by configuring the TBU base switch to Base. Once the failed
unit is repaired or replaced, check all unit base switches to ensure only one unit in the stack is
configured as the Base unit.
Important:
Only one unit in a Stack can operate as the Base unit. Ensure that only one switch is configured as
the Base unit.
Base unit
August 2014 Installing Avaya VSP 7000 Series 41
Comments? infodev@avaya.com

Avaya VSP 7000 Series Specifications

General

Brand	Avaya
Model	VSP 7000 Series
Category	Switch
Language	English