Juniper JUNOS - NETWORK OPERATION GUIDE REV1 User Manual

Verifying Routing Engine Failure ! 155
Chapter 14: Monitoring the Routing Engine
What It Means The command output displays statistics about the amount of free disk space in the
router’s file systems, including the amount used, the amount available, and the
percentage of system space being used. The values are displayed in 1024-byte
(1KB) blocks.
Filesystem is the name of the file system on which the Routing Engine booted. The
command output also displays the directory to which the file system is mounted.
During normal operation, the
/ and /config directories are from the compact flash
drive and the
/var directory is from the hard drive. If the router booted off the hard
drive, the
show system storage command will show all three directories on the hard
drive. If the hard drive fails and the router booted off the compact flash drive, the
show system storage command will show all three directories on the compact flash
drive.
Step 5: Display the Current Routing Engine Alarms
To display information about the conditions that trigger Routing Engine alarms for
each router type, see “Display the Current Router Alarms” on page 61.
Action To display the current Routing Engine alarms, use the following CLI command:
user@host> show chassis alarms
Sample Output user@host> show chassis alarms
1 alarms currently active
Alarm time Class Description
2001-07-22 15:12:19 PDT Major hard-disk missing in Boot List
2002-05-14 09:20:36 PDT Major compact-flash missing in Boot List
2002-05-14 09:20:31 PDT Minor Boot from alternate media
What It Means The command output displays the alarm time, severity level, and description.
Step 6: Display Error Messages in the System Log File
Action To view Routing Engine error messages in the system log file, use the following CLI
command:
user@host> show log messages
Sample Output For compact flash drive errors:
user@host> show log messages
Feb 3 07:58:17 host /kernel: ad0: HARD WRITE ERROR blk# 135783 status=51
error=10 Feb 3 07:58:17 host /kernel: ad0: HARD WRITE ERROR blk# 137633
status=51 error=10 Feb 3 07:58:47 host /kernel: ad0: HARD WRITE ERROR blk#
135731 status=51 error=10 Feb 3 07:58:47 host /kernel: ad0: HARD WRITE ERROR
blk# 135783 status=51 error=10 Feb 3 07:58:47 host /kernel: ad0: HARD WRITE
ERROR blk# 137633 status=51 error=10
NOTE: An event may occasionally cause the Routing Engine not to boot and you
will not be able to display the current alarms.

Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Specifications

General

Brand	Juniper
Model	JUNOS - NETWORK OPERATION GUIDE REV1
Category	Software
Language	English