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Cisco ASR 907 Router Overview
Air Plenum (A9X7-F2B-AIR)
Air Plenum or air baffle assembly is used to change the air flow pattern of the unit. When the router is installed
with the plenum, the air flow pattern is changed from side-side to front-back. The air flow front-back pattern
provides a rack installation bay with a cool front zone and hot rear zone. For installing the plenum, see
the Chassis in the Air
When the air plenum and the fan filter are installed in the chassis, the system operating temperature is 55º
Note
C.
RSP Modules
The Cisco ASR 907 Router is designed to use up to two RSP modules to handle the data plane, network timing,
and control plane functionalities for the router. The RSP configuration allows you to use Cisco IOS software
to control chassis management, redundancy, external management, and system status indications on the router.
RSP features include:
• Loading software onto processor-based interface modules
• Redundant RSP management—The RSP manages detection of RSPs, exchange of health and status
• Packet processing
• Traffic management, including buffering, queuing, and scheduling, Ethernet MAC functions
• Network clocking functions including phase and time-of-day for BITS, 1 PPS, 10 MHz, and 1588 PTP
• Storage of software images, system configuration, SysLog
• PTP packet processing including IEEE 1588-2008 for recovering network timing (frequency, phase,
• External management interfaces (RS232 console, management ENET, USB console, USB storage) and
Supported RSPs
Effective Cisco IOS-XE Release 3.16, the Cisco ASR 907 Router supports the following RSP:
• A900-RSP3C-400-W—Provides 8 GB of SDRAM, 20 Mb of TCAM memory on every ASIC.
The RSP does not provide external network interfaces for user traffic. All network interfaces are provided
through separate IMs.
Plenum.
information, role negotiation, function for detection, health and status exchange, role negotiation
clock references.
and time) from upstream PTP clocks, for generating PTP frequency and phase references as inputs to
the SETS, and for distributing them to downstream PTP clocks
system status LED indicators
Cisco ASR 907 Router Hardware Installation Guide
RSP Modules
Installing
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