4-2
CiscoASR 9000 Series Aggregation Services Router Hardware Installation Guide
Chapter4 Troubleshooting the Installation
Troubleshooting Overview
Troubleshooting Using a Subsystem Approach
To solve a system problem, try to isolate the problem to a specific subsystem. Compare current router
behavior with expected router behavior. Because a startup issue is usually attributable to one component,
it is most efficient to examine each subsystem, rather than trying to troubleshoot each router component.
Table 4 -1 describes the subsystems for the Cisco ASR 9000 Series Routers:
Table4-1 Subsystem Descriptions for the Cisco ASR 9000 Series Routers
Type of Subsystem Description
Power subsystem •Up to 8 AC input or DC input power supply modules can
be installed in the Cisco ASR 9010 Router chassis.
•Up to 4 AC input or DC input power supply modules
installed in the Cisco ASR 9006 Router chassis.
•Up to 6 AC input or DC input power supply modules
installed in the Cisco ASR 9904 Router chassis.
•Up to 16 AC input or DC input power supply modules
installed in the Cisco ASR 9922 Router chassis.
•Up to 12 AC input or DC input power supply modules
installed in the Cisco ASR 9912 Router chassis.
Chassis backplane power distribution The system transfers –54VDC power from the power modules
to the chassis backplane and distributes it to all the cards
through the backplane connectors.
Processor subsystem
Cisco ASR 9010Router
Cisco ASR 9006 Router
Cisco ASR 9904 Router
Includes the active Route Switch Processor (RSP) card (and
optional, redundant RSP card, if installed).
Up to eight line cards in the Cisco ASR 9010 Router, four line
cards in the Cisco ASR 9006 Router, and two line cards in the
Cisco ASR 9904 Router.
Note The RSP and line cards are equipped with onboard
processors. The RSP downloads a copy of the Cisco
software image to each line card processor. The system
uses an alphanumeric display on the active RSP to
display status and error messages, which can help in
troubleshooting.
Processor subsystem
Cisco ASR 9922Router
Cisco ASR 9912 Router
Includes the active Route Processor (RP) card, standby
redundant RP card.
Up to 20 line cards in the CiscoASR 9922 Router or 10 line
cards in the Cisco ASR 9912 Router.
Note The RP and line cards are equipped with onboard
processors. The RP downloads a copy of the Cisco
software image to each line card processor. The system
uses an alphanumeric display on the active RP to
display status and error messages, which can help in
troubleshooting.