Juniper JUNOS - NETWORK OPERATION GUIDE REV1 User Manual

Verifying Routing Engine Failure ! 153
Chapter 14: Monitoring the Routing Engine
dr-xr-xr-x 3 root wheel 512 Feb 4 23:16 boot
drwxr-xr-x 3 root wheel 512 Feb 3 18:08 config
dr-xr-xr-x 4 root wheel 2084 Feb 4 23:18 dev dr-xr-xr-x 7 root wheel 1536
Feb 4 23:19 etc
lrwxr-xr-x 1 root wheel 17 Dec 29 12:02 kernel -> /packages/jkernel
dr-xr-xr-x 2 root wheel 512 Jan 20 2004 mnt
drwxr-xr-x 2 root wheel 512 Feb 3 21:16 modules
drwxr-xr-x 3 root wheel 1536 Feb 3 21:19 packages
dr-xr-xr-x 1 root wheel 512 Feb 4 23:29 proc
dr-xr-xr-x 2 root wheel 512 Feb 3 21:15 root
dr-xr-xr-x 3 root wheel 1536 Feb 3 21:15 sbin
drwxrwxrwt 3 root wheel 512 Feb 4 23:19 tmp
dr-xr-xr-x 8 root wheel 512 Dec 29 12:00 usr
lrwxr-xr-x 1 root wheel 8 Feb 4 23:18 var -> /tmp/var
What It Means The example shows that var has a symbolic link to the /tmp/var directory. It resides
under the
/tmp/var directory, and is mounted on the mfs partition.
Verify That the Hard Disk Is Missing from The Boot List
Action To verify that the hard disk (ad1) is missing from the boot list, use the following CLI
command:
user@host> show system boot-messages | match "ad0|ad1"
Sample Output user@host> show system boot-messages | match "ad0|ad1"
ad0: 122MB <SanDisk SDCFB-128> [980/8/32] at ata0-master using PIO4
ad1: not attached, missing in Boot List
Mounting root from ufs:/dev/ad0s1a
What It Means The device is taken out of the boot list because of an error condition, such as a
HARD READ errror.
View Alarms When Media Is Removed from the Boot List
Action To display an alarm that is generated when media (compact flash or hard disk) is
removed from the boot list, 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
2005-02-04 23:19:27 CET Major hard-disk missing in Boot List
What It Means When the router is operational and the hard disk is removed from the boot list, a
minor yellow alarm is generated. When the router is rebooted and the hard disk is
still removed from the boot list, a red major alarm is generated.
What It Means The command output displays a major alarm indicating what media is missing
from the boot list and the time and date when the event occurred.

Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Specifications

General

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