User Guide

FINAL DRAFT —Cisco Confidential
6-7
Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-17502-01
Chapter 6 Troubleshooting the Cisco IOS XR Software
Memory Warnings in Configuration Sessions
taskgroup alr
!!% Usergroup/Taskgroup names cannot be taskid names
You can also display the failed configuration items without the error description by entering the
show
configuration failed noerror command:
!! CONFIGURATION FAILED DUE TO SEMANTIC ERRORS
taskgroup alr
!Configuration Errors at Startup
Configuration errors that occurred during system startup can be displayed with the show configuration
failed startup command. For example:
RP/0/RSP0/CPU0:router# show configuration failed startup
!! CONFIGURATION FAILED DUE TO SYNTAX ERRORS
ntp
http server
Memory Warnings in Configuration Sessions
The Cisco IOS XR software automatically monitors and manages the system resources in a router.
Under normal operating conditions, memory problems should not occur.
When a low-memory issue does occur, it is often in the form of a low-memory warning during a
configuration session. Low-memory conditions can be caused by multiple, large configurations being
added to the router at a single time. Users can remove the source of a problem by removing
configurations.
The following sections describe the commands used to display memory usage in a router and what to do
if a low-memory warning appears:
• Understanding Low-Memory Warnings in Configuration Sessions, page 6-7
• Viewing System Memory Information, page 6-8
• Removing Configurations to Resolve Low-Memory Warnings, page 6-9
• Contacting TAC for Additional Assistance, page 6-11
Understanding Low-Memory Warnings in Configuration Sessions
The Cisco IOS XR software monitors memory usage in the Cisco CRS-1 router. If system memory
becomes low, an error message appears when you attempt to enter configuration mode.
An “out-of-memory” error message appears during one of the following situations:
• When a user attempts to enter configuration mode.
• During a configuration session when the memory shortage occurs.
• When a user attempts to load a target configuration from a large file that results in a memory
shortage.