Describes how to isolate problems, read LEDs,
interpret error and status messages, and recover
software images.
Appendix A
Provides information on part numbers of the router
chassis models, product, power, and environmental
specifications. It also contains safety and compliance
information.
Specifications and Part Numbers
Appendix B
Provides cable specifications to use if you plan to build
your own cables.
Appendix C
Conventions
Table 1: Conventions Followed in This Document
Indication
Convention
Commands and keywords and user-entered text appear in
bold
font.
bold
font
Document titles, new or emphasized terms, and arguments for which you
supply values are in
italic
font.
italic
font
Elements in square brackets are optional.
[ ]
Required alternative keywords are grouped in braces and separated by vertical
bars.
{x | y | z }
Optional alternative keywords are grouped in brackets and separated by
vertical bars.
[ x | y | z ]
A nonquoted set of characters. Do not use quotation marks around the string
or the string will include the quotation marks.
string
Terminal sessions and information the system displays appear in
courier
font.
courier
font
Nonprinting characters such as passwords are in angle brackets.
< >
Default responses to system prompts are in square brackets.
[ ]
An exclamation point (!) or a pound sign (#) at the beginning of a line of code
indicates a comment line.
!, #
Cisco ASR 901S Series Aggregation Services Router Hardware Installation Guide
viii
OL-29732-01
Preface
Conventions