Руководство По Установке для Cisco Cisco Tunnel Terminating Gateway (TTG)
Installation Procedure Overview
Chassis Components ▀
ASR 5000 Installation Guide ▄
57
Item
Description
4
Upper bezel: Covers the upper fan tray bay.
5
Lower fan tray cover/EMI shield: Secures the lower fan tray assembly in place and serves as an EMI shield. The
cover also provides an air baffle allowing air to enter into the chassis.
cover also provides an air baffle allowing air to enter into the chassis.
6
Lower bezel: Covers the lower fan tray bay.
7
Lower fan tray assembly: Draws air into the chassis through the chassis' front and sides for cooling and ventilation. It
is equipped with a particulate air filter to prevent dust and debris from entering the system.
is equipped with a particulate air filter to prevent dust and debris from entering the system.
8
Power Filter Units (PFUs): Each of the system’s two 165 amp PFUs provides -48 VDC power to the chassis and its
associated cards. Each load-sharing PFU operates independently from the other to ensure maximum power feed
redundancy.
associated cards. Each load-sharing PFU operates independently from the other to ensure maximum power feed
redundancy.