Juniper Networks M10i Benutzerhandbuch
on page 19 describes the alarm LEDs in more detail.
Table 10: Alarm LEDs
Description
State
Color
Shape
Critical alarm LED—Indicates a critical condition
that can cause the router to stop functioning, such
as component removal, failure, or overheating.
that can cause the router to stop functioning, such
as component removal, failure, or overheating.
On steadily
Red
Warning alarm LED—Indicates a serious but nonfatal
error condition, such as a maintenance alert or a
significant increase in component temperature.
error condition, such as a maintenance alert or a
significant increase in component temperature.
On steadily
Yellow
PIC Offline Buttons
Offline buttons for one row of PICs are located on each HCM (see
). Pressing
the button relays a request to the CFEB, which prepares the PIC for removal from
the router, or brings it online when it is replaced. The HCM in slot
the router, or brings it online when it is replaced. The HCM in slot
0
controls PICs
on FPC
0
. The HCM in slot
1
controls PICs on FPC
1
. The buttons are labeled with
the PIC slot numbers. The PIC slots on the upper FPC are numbered from
0/0
(zero/zero) through
0/3
, right to left. The PIC slots in the lower FPC are numbered
from
1/0
(one/zero) through
1/3
, right to left.
For PIC replacement instructions, see
Power Supplies
The router uses either AC or DC power. You can install up to four load-sharing power
supplies at the bottom rear of the chassis, as shown in
supplies at the bottom rear of the chassis, as shown in
connect to the midplane, which distributes power to router components according
to their individual voltage requirements. When the power supplies are installed and
operational, they automatically share the electrical load.
to their individual voltage requirements. When the power supplies are installed and
operational, they automatically share the electrical load.
An enable control pin on the output connector of each power supply ensures that
the supply is fully seated into the router midplane before the supply can be turned
on. The enable pin prevents a user-accessible energy hazard, so there is no
interlocking mechanism. The enable pin disables the voltage at the output connector
if the power supply is not turned off before removal.
the supply is fully seated into the router midplane before the supply can be turned
on. The enable pin prevents a user-accessible energy hazard, so there is no
interlocking mechanism. The enable pin disables the voltage at the output connector
if the power supply is not turned off before removal.
The router must have at least two AC power supplies, and any two AC power supplies
can provide full power to the router. Three power supplies are required for
redundancy.
can provide full power to the router. Three power supplies are required for
redundancy.
The router must have at least two DC power supplies, and any two DC power supplies
can provide full power to the router. DC system redundancy requires two power
sources from feed A and two power sources from feed B. If one feed fails or is shut
down for service, the other feed powers two DC power supplies and can provide full
power to the router's components indefinitely.
can provide full power to the router. DC system redundancy requires two power
sources from feed A and two power sources from feed B. If one feed fails or is shut
down for service, the other feed powers two DC power supplies and can provide full
power to the router's components indefinitely.
Power Supplies
■
19
Chapter 2: Hardware Component Overview