Cisco Systems Cisco IOS XR manual Configuration Failures During a Commit Operation, Viii

Contents

	Using the ping Command			7-3
	Using the traceroute Command				7-4
	Using debug Commands			7-5
	Configuration Error Messages			7-7
	Configuration Failures During a Commit Operation 7-8
	Configuration Errors at Startup				7-8
	Memory Warnings in Configuration Sessions					7-9
	Understanding Low-Memory Warnings in Configuration Sessions 7-9
	Displaying System Memory Information					7-10
	Removing Configurations to Resolve Low-Memory Warnings 7-11
	Contacting TAC for Additional Assistance					7-13
	Interfaces Not Coming Up		7-13
	Verifying the System Interfaces				7-13
	Understanding Regular Expressions, Special Characters, and Patterns A-1
A P P E N D I X A
	Regular Expressions	A-1
	Special Characters	A-2
	Character Pattern Ranges		A-2
	Multiple-Character Patterns			A-3
	Complex Regular Expressions Using Multipliers A-3
	Pattern Alternation	A-4
	Anchor Characters	A-4
	Underscore Wildcard	A-4
	Parentheses Used for Pattern Recall				A-4

G L O S S A R Y

I N D E X

Cisco IOS XR Getting Started Guide

viii OL-10957-02