3.3 V 3138 mV
5.0 V 4763 mV
1.2 V Rocket IO 1160 mV
1.5 V Rocket IO 1408 mV
1.8 V RLDRAM 1717 mV
I2C Slave Revision 15
Related
Documentation
M120 Forwarding Engine Boards (FEBs) Description on page 75
•
•
Maintaining the M120 FEBs on page 278
•
Replacing an M120 FEB on page 255
Troubleshooting an M120 FEB When a Chassis Alarm Is Lit Upon Initial Startup or
Removal
Problem
Description:
An FPC is mapped to an empty FEB slot, the red alarm LED on the chassis
is lit:
The FPC mapped to an empty FEB slot (or to a FEB that is offline) comes online, but its
Physical Interface Cards (PICs) do not, and the physical interfaces on those PICs are not
created.
Solution
On startup, the red alarm LED is lit if an FPC slot is filled, but the corresponding FEB
slot is empty.
•
•
The red alarm LED is lit if a FEB is removed before its connected FPCs are remapped
to either another FEB or to
none
.
To eliminate the red alarm LED:
1.
Check the status of FEBs and determine whether each FPC is connected to an active
FEB by entering the
show chassis fpc-feb-connectivity
command. By default, each
FPC is associated with the FEB of the same identifying number; for example, FPC 1 to
FEB 1.
2.
If necessary, change the default FPC-FEB connection by using the
fpc-feb-connectivity
statement at the
[edit chassis]
hierarchy level. You can also map an FPC to
none
to
specify that the FPC is not mapped to any FEB. (When an FPC is configured not to
connect to any FEB, interfaces on that FPC are not created; however, no alarm is
triggered.)
3.
Verify that the associated physical interfaces are created by entering the
show
interfaces terse
command.
For more information about configuring FPC-FEB connectivity, see the
Junos OS
Administration Library
.
291
Copyright © 2018, Juniper Networks, Inc.
Chapter 32: Troubleshooting Components
Summary of Contents for M120
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