System Management Bus - Cisco ASR 5000 series Product Overview

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ASR 5000 Hardware Platform Overview

32 Gbps Control Bus

The Control Bus features redundant 32 Gbps Ethernet paths that interconnect all control and management processors

within the system. The bus uses a full-duplex Gigabit Ethernet (GE) switching hierarchy from both SMCs to each of the

14 application card slots in the chassis. Each application card is provisioned with a GE switch to meet its specific needs.

This bus also interconnects the two SMC modules.

System Management Bus

The System Management Bus supports management access to each component within the chassis. It provides a

communication path from each SMC to every card in the system supporting a 1 Mbps transfer rate to each card. This

allows the SMCs to manage several low-level system functions, such as supplying power, monitoring temperature,

board status, pending card removals, and data path errors, and controlling redundant/secondary path switchovers, card

resets, and other failover features. Additionally, the System Management Bus monitors and controls the fan trays, power

filter units, and alarming functions.

280 Gbps Redundancy Bus

The Redundancy Bus consists of multiple, full-duplex serial links providing packet processing card-to-line card

redundancy through the chassis' Redundancy Crossbar Cards (RCCs) as shown below.

ASR 5000 Chassis Descriptions ▀

Cisco ASR 5000 Series Product Overview ▄