Rsp Modules; Supported Rsps - Cisco ASR 903 Installation Manual

Chapter 1 Cisco ASR 903 router Overview
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RSP Modules

The Cisco ASR 903 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.
The following sections describe the Cisco ASR 903 router RSP:
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RSP features include:
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Supported RSPs

The Cisco ASR 903 router supports the following RSPs:
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The supported RSPs have different memory capacities, but they have the same interfaces and
Note
functionality.
OL-25178-03
B E TA D R A F T - C I S C O C O N F I D E N T I A L
Supported RSP Features, page 1-10
RSP Redundancy, page 1-10
Network Timing Interfaces, page 1-10
RSP Interfaces, page 1-10
Loading software onto processor-based interface modules
Redundant RSP management—The RSP manages detection of RSPs, exchange of health and status
information, role negotiation, function for detection, health and status exchange, role negotiation
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 clock references.
Storage of software images, system configuration, OBFL, SysLog
PTP packet processing including IEEE 1588-2008 for recovering network timing (frequency, phase,
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
External management interfaces (RS232 console, management ENET, USB console, USB storage)
and system status LED indicators
A900-RSP1A-55—Provides 2 GB of SDRAM, 5 Mb of TCAM memory, 3-Mb buffer table,
576-Mb forwarding memory, and 1,536-Mb packet buffer memory.
A900-RSP1B-55—Provides 4 GB of SDRAM, 20 Mb of TCAM memory, 144-Mb buffer table,
1152-Mb forwarding memory, and 1,536-Mb packet buffer memory.
Table A-2).
Cisco ASR 903 Router Hardware Installation Guide
Cisco ASR 903 router Features
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