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• the spare server blade, used for PM&C backups and disaster recovery
Ethernet Switch Blade
Each IEEE 802.3 high-speed Gigabit Ethernet (GigE) switch blades is deployed in pairs, operating in
a 1+1 redundant active/active configuration.
There are two physically separate switches within each physical switch blade:
• Base switch, which is assigned platform management responsibilities
• Fabric switch, which is assigned data responsibilities
This configuration ensures not just a logical separation, but the complete, physical separation between
platform management packets (base switch) and data packets (fabric switch).
The two switches have a connection between them on each of the switching domains. The switch
provides for external Gigabit Ethernet connectivity, in addition to the on-shelf Gigabit Ethernet
connection to each blade, over the midplane.
Shelf Alarm Display
The shelf alarm display indicates Telco faults (MIN, MAJ, CRIT), or FAN TRAY failures along with
faults in Shelf Management. The shelf alarm display is hot-swappable.
Figure 14: Shelf Alarm Display - Front
Shelf Alarm Panel
The shelf alarm connects to the PDP and provides power to the shelf alarm display. The shelf alarm
panel is hot-swappable and is mounted in the upper, right front corner of the T5100 applications shelf,
see
Figure 13: T5100 Applications Shelf (front)
Figure 15: Shelf Alarm Panel - Front
shows the front of the shelf alarm panel with the serial port used
by the connector.
Figure 15: Shelf Alarm Panel - Front
40
910-5681-001 Revision E, February 2014
Hardware Description
Installation