Cisco CRS-1 - Carrier Routing System Router Troubleshooting Guide

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Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
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Chapter 2 Troubleshooting Booting
Verifying Successful Bootup
• The line card chassis (LCC) numbering must be in the range of 0 to 127.
• The fabric card chassis (FCC) numbering must be in the range of 240 to 255.
• In a multishelf configuration, all racks must have a unique number.
Verifying Successful Bootup
For information on verifying the status of the router, see Cisco IOS XR Getting Started Guide for the
Cisco CRS-1 Router. It contains detailed procedures for verifying a standalone router and multishelf
system.
The show platform command displays the state transitions when a node is booting:
• SP RMON—The service processor (SP) is starting and the basic code is being loaded on the SP (LC
only).
• ROMMON—Once the SP has started, the LC CPU is on and the LC ROMMON software is started
(LC only).
• MBI BOOT—The minimum boot image code is loading on the LC CPU from disk or the DSC (LC
only).
• MBI RUNNING—The required processes on the LC are starting. The normal transition from this
state is to start the Cisco IOS XR operating system.
• IOS XR—The Cisco IOS XR software is running.
• PRESENT—LC is not sending boot request or boot request is dropped
Verifying and Troubleshooting the Console Connection
The default configuration selects the route processor (RP) in the lowest numbered slot. For the
Cisco
CRS-1 Multishelf System, the RP in the lowest numbered slot in the LCC configured as Rack 0 is
selected as the primary RP and the designated shelf controller (DSC).
To determine the primary RP on routers running Cisco IOS XR software:
• On Cisco CRS-1 RPs, the primary RP is identified by a lighted Primary LED on the RP front panel.
The primary RP is also identified by “ACTV RP” in the alphanumeric display on the card. The
console port is located on the primary RP.
The console connection through the DSC provides a communications path to the routing system. The
console port is designed for a serial cable connection to a terminal or computer running a terminal
emulation program. See Cisco
IOS XR Getting Started Guide for the Cisco CRS-1 Router for
information on connecting to the console port.
To verify and troubleshoot the console connection on the DSC, perform the following procedures.
SUMMARY STEPS
1. Check the cable between the console port on the DSC and the terminal or computer.
2. Open the terminal emulation application, select the correct COM port and verify the settings.
3. Swap cables.
4. Test the cable on another console port.
5. Contact Cisco Technical Support if the problem is not resolved.

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English