SIB 3 through SIB 5 are located behind the right fan tray. You must remove the appropriate fan tray to
access the failing SFB. See
"Remove an MX10004 Fan Tray" on page 166
.
If you plan to replace one or more Switch Fabric Boards (SFBs), make sure you calculate the time
required to remove the fan tray, add or replace the SFBs, and install the fan tray in the chassis. To
calculate the time allowed for replacing a SFB, see
Ensure that you have the following equipment on hand before replacing a SFB:
• Electrostatic bag or antistatic mat
• Electrostatic discharge (ESD) grounding strap
• Phillips (+) number 2 screwdriver (optional)
• Replacement SFB or SFB cover (JNP10K-SF-BLNK) for the empty slot
CAUTION: Do not remove the SFB unless you have a replacement SFB or a SFB cover
(JNP10004-SF-BLNK) available.
NOTE: If you are not installing another SFB into the empty card slot within a short time, install
the SFB cover into the slot to maintain proper airflow in the card cage.
NOTE: When replacing the fans or SFBs at 40° C chassis ambient temperature, ensure that the
fans run at 100% fan speed for at least 10 minutes before replacing the fans or SFBs. Use the
test chassis fan tray 0 speed
full-speed
and
test chassis fan tray 1 speed
full-speed
commands to set
the chassis fans to 100% speed.
After replacing the fans or SFBs, set the fans to normal speed using the
test chassis fan tray 0
speed normal
and
test chassis fan tray 1 speed normal
command.
To remove an MX10004 Switch Fabric Board:
1. Take the SFB offline using the
request chassis sfb slot
slot-number offline
command.
NOTE: If you suspect the SFB is faulty and want to ensure that packets do not flow through
the SFB, power off the SFB instead of taking the SFB offline. To power down the SFB, use the
set chassis sfb
slot-number offline
command. Before you bring a new SFB in that slot online,
you must delete the old configuration using the
delete chassis sfb slot
slot-number offline
command.
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