Check For Scb Alarms; Display Scb Error Messages In The System Log File - Juniper M Series Monitoring And Troubleshooting Manual

M Series and T Series Routers Monitoring and Troubleshooting Guide
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Check for SCB Alarms

Display SCB Error Messages in the System Log File

Purpose
Action
Sample Output
496
If all four SCB LEDs are on, but dimly lit, the SCB is probably not seated properly. Tighten
the captive screws at the top and bottom of the SCB card carrier.
If the green LED on the SCB is not blinking, the SCB processor is not functioning
RUN
normally. The SCB might not be connected properly to the backplane. Tighten the screws
at the top and bottom of the SCB card carrier. If that does not work, reinstall the SCB.
The SCB has a reset switch on its faceplate above the LEDs. You normally do not use
the reset switch. Pushing the reset switch results in a cold restart of the Packet Forwarding
Engine, which causes a service interruption for a minute or two. To trip the reset switch,
you must access it through a hole in the faceplate with a paper clip or other small probe.
Checklist for Monitoring the SCB on page 491
To check for SCB alarms:
Display SCB Error Messages in the System Log File on page 496
1.
Display SCB Error Messages in the Chassis Daemon Log File on page 497
2.
To determine the details of the SCB error messages in the system log file.
An SCB failure can cause the
LAN, to go up and down.
To display SCB error messages in the system log file, use the following CLI command:
user@host> show log messages
user@host> show log messages
Nov 19 04:35:29 host snmpd[353]: SNMPD_SEND_FAILURE: trap_io_send_trap_now: sendto:
No route to host
Nov 19 04:35:29 host rpd[355]: task_connect: task BGP_209.192.168.0.21+179 addr
192.168.0.21+179: No route to host
Nov 19 04:35:29 host snmpd[353]: SNMPD_SEND_FAILURE: trap_io_send_trap_now: sendto:
No route to host
Nov 19 04:35:29 host rpd[355]: bgp_connect_start: connect 192.168.0.21 (Internal
AS 209): No route to host
Nov 19 04:35:29 host snmpd[353]: SNMPD_SEND_FAILURE: trap_io_send_trap_now: sendto:
No route to host
Nov 19 04:35:29 host last message repeated 9 times
Nov 19 04:35:29 host tnp.bootpd[369]: BOOTPD_BOOTSTRING: boot 1 scb.jbf
Nov 19 04:35:29 host tnp.tftpd[389]: TFTPD_INFO: tftp read from addr 2 po
rt 1024 file scb.jbf
Nov 19 04:35:31 host tnp.tftpd[389]: TFTPD_INFO: sent 1348 blocks of 1024 and 1
block of 780 for file /usr/share/pfe/scb.jbf
Nov 19 04:35:32 host mgd[387]: UI_CMDLINE_READ_LINE: user 'user', command 'show
chassis scb '
Nov 19 04:35:34 host /kernel: fxp1: link media DOWN 10Mb / half-duplex
interface, the Ethernet connection to a management
fpx0
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