JUNOS Internet Software Network Operations Guide: Hardware
206 ! Verifying Craft Interface Failure
Step 1: Display Craft Interface Alarms
A craft interface failure generates a red or yellow alarm, or both. For information
about conditions that trigger craft interface alarms, see “Gather Component Alarm
Information” on page 60.
Action To display a craft interface alarm, use the following CLI command:
user@host> show chassis alarms
Sample Output For an M20 router:
user@host>
show chassis alarms
1 alarms currently active
Alarm time Class Description
2002-05-09 00:00:54 UTC Major fxp0: ethernet link down
For M40e and M160 routers:
user@host>
show chassis alarms
2 alarms currently active
Alarm time Class Description
2002-06-07 18:20:00 UTC Minor Craft Failure
2002-06-07 18:20:00 UTC Minor Front Top Fan Absent
What It Means (M20 router) If the craft interface fails or is removed, you see an alarm. For
example, if you remove the craft interface, a major management Ethernet interface
down alarm is generated. The Ethernet link to the router is down. The Ethernet
management interface, or
fpx0, provides an out-of-band method for connecting to
the router. You can connect to the management interface over the network using
utilities such as secure shell (SSH) and telnet. The Simple Network Management
Protocol (SNMP) can use the management interface to gather statistics from the
router.
(M40e and M160 routers) The craft interface is connected to the front top fan
assembly. If the craft interface fails or is removed, a craft interface failure alarm and
a front top fan absence alarm are generated.
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