Juniper MX2020 Hardware Manual page 566

On a regular basis:
Check the LEDs on the craft interface directly above each MPC slot. The green LED labeled OK lights
steadily when a MPC is functioning normally.
Check the OK/FAIL LED on the MPC. For more information, see
If the MPC detects a failure, the MPC sends an alarm message to the Routing Engine.
Check the status of installed MPCs by issuing the CLI show chassis fpc command to check the status of
installed MPCs. As shown in the sample output, the value Online in the column labeled State indicates
that the MPC is functioning normally:
user@host> show chassis fpc
Temp
Slot State
0 Empty
1 Empty
2 Empty
3 Empty
4 Online
5 Empty
6 Empty
7 Online
8 Online
9 Online
10 Present
11 Online
12 Empty
13 Empty
14 Empty
15 Online
16 Empty
17 Empty
18 Online
19 Empty
For more detailed output, add the detail option. The following example does not specify a slot number,
which is optional:
user@host> show chassis fpc detail
Slot 4 information:
State
Temperature
CPU Utilization (%)
(C) Total Interrupt
28 11
30 8
29 10
31 12
28
38 16
36 11
31 10
28
MX Series Interface Module
Memory Utilization (%)
DRAM (MB) Heap
0 2048
0 2048
0 2048
0 2048
2 2048
0 2048
0 2048
Online
Reference.
Buffer
15 14
14 13
11 13
16 14
16 14
15 14
18 13
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