ACX5048 and ACX5096 Chassis
Management Panel of an ACX5000 Router
The management panel of the ACX5000 router is found on the Field Replaceable Unit (FRU) end of the router as shown in Figure 1 for 1 U ACX5048 router and Figure 2 for the 2 U ACX5096 router.
See Figure 3 and Figure 4 for FRUs and management panel detail.

1 — Management panel | 3 — Power supply units |
2 — Fan modules |


1 — Status LEDs | 4 — RJ-45 console port (CON) ) |
2 — em1–SFP management Ethernet port (C1)Cage (socket for either 1 GbE copper SFP or fiber
SFP) | 5 — USB port |
3 — em0–RJ-45 (1000 Base-T) management Ethernet port
(C0)Some SKUs have an additional
SFP management Ethernet port (second C0) |

1 — Status LEDs | 4 — RJ-45 console port (C0N) ) |
2 — em1–SFP management Ethernet port (C1) Cage (socket for either 1 GbE copper SFP or fiber
SFP) | 5 — USB port |
3 — em0–RJ-45 (1000 Base-T) management Ethernet port
(C0) |
The management panel consists of the following components:
Status LEDs
ALM–Alarm
Unlit indicates the router is halted or that there is no alarm.
Red indicates a hardware fault, such as a power failure or a system shutdown due to system over-heating.
Amber indicates a major or minor alarm.
SYS–System
Unlit indicates the router is powered off or halted.
Solid green indicates that Junos OS for ACX Series is loaded on the router.
ID–Identification or beacon
Unlit indicates the beacon feature is not enabled.
Blinking blue indicates the beacon feature is enabled. This feature is enabled using the
request chassis beacon
command.
Router product number
Management Ports C0 and C1
C0–Use the RJ-45 connectors for 10/100/1000 BaseT. See Connecting an ACX5000 Router to a Network for Out-of-Band Management.
C1–Use the SFP connector for 1000 BaseX.
USB port for image updates.
Console port (RJ-45) to support RS-232 serial ports.
See Also
Port Panel of an ACX5048 Router
The port panel of the ACX5048 supports up to a maximum of 72 logical 10 GbE ports when operating as a standalone router. Forty-eight physical ports(0 through 47) support 10 Gbps small form-factor pluggable plus (SFP+) transceivers. These ports can be configured as access ports. All 48 of these ports can be used for SFP+ transceivers or SFP+ direct attach copper (DAC) cables. You can use 1-Gigabit Ethernet SFP, 10-Gigabit Ethernet SFP+ transceivers and SFP+ direct attach copper cables in any access port.
The remaining 24 logical ports are available for six 40 GbE ports (48 through 53) that support up to six quad small-form factor pluggable plus (QSFP+) transceivers or QSFP+. Each QSFP+ socket can operate either as a single 40 Gbps port or as a set of 4 independent 10 Ggps ports using QSFP+ breakout cables. The 40 GbE ports can be configured as either access ports or as uplinks.
Do not place a copper transceiver in an access port directly above or below another copper transceiver. Internal damage to the access ports and router can occur. We recommend either using the top port row exclusively, or bottom port row exclusively, for copper transceivers.
Figure 5 shows the port panel of a ACX5048 router.

1 — Electrostatic Discharge (ESD) terminal | 3 — 40 Gigabit Ethernet ports (6) |
2 — 10 Gigabit Ethernet ports (48) |
Port Panel of an ACX5096 Router
The port panel of the ACX5096 router consists of 96 small form-factor pluggable plus (SFP+) and 8 quad small-form factor pluggable plus (QSFP+) ports. Physical ports(0 through 95) support 10 Gbps SFP+ transceivers and normally are configured as access ports. The eight 40-Gigabit ports (96 through 103) support QSFP+ transceivers and are normally configured as uplinks or Virtual Chassis ports (VCPs). Although the 104 physical ports of the ACX5096 would map to 128 logical ports using channelization, only 104 logical ports are supported.
Figure 6 shows the port panel of a ACX5096 router.

1 — Electrostatic Discharge (ESD) terminal | 3 — 40 Gigabit Ethernet ports (8) |
2 — 10 Gigabit Ethernet ports (96) |
This topic describes:
Router Ports
The ACX5096 ports, (0 through 95) support:
1 Gbps SFP transceivers
10 Gbps SFP+ transceivers
10 Gbps direct attach copper (DAC) cables
Ports 96 through 104 support:
40 Gbps QSFP+ transceivers
Additionally ports 96 and 100 support:
QSFP+ direct attach copper (DAC) cables
QSFP+ to SFP+ direct attach copper break out (DACBO) cables
QSFP+ to SFP+ fiber break out cables
All 96 of these ports can be used for SFP+ transceivers or SFP+ direct attach copper (DAC) cables. You can use 1-Gigabit Ethernet SFP+, 10-Gigabit Ethernet SFP+ transceivers and SFP+ direct attach copper cables in any access port.
Do not place a copper transceiver in an access port directly above or below another copper transceiver. Internal damage to the access ports and router can occur. We recommend either using the top port row exclusively, or bottom port row exclusively, for copper transceivers.
Channelizing Interfaces
The port panel of an ACX5096 supports up to a maximum of 104 logical 10 GbE ports that can be distributed over 96 small form-factor pluggable plus (SFP+) and 8 quad small-form factor pluggable plus (QSFP+) transceivers . Because of an 104 port restriction, only two of the eight QSFP+ can be channelized. Depending on how you set the system mode for channelization, the behavior of channelization for the QSFP+ changes. The following system modes are available for the ACX5096 router:
Non-oversubscribed
All 96 SFP+ ports on the router (PIC 0) are supported. In this mode, the eight QSFP+ ports are not supported and cannot be channelized. There is no packet loss for packets of any size in this mode.
Default mode
All 96 SFP+ ports on the router (PIC 0) are supported. QSFP+ ports 96 and 100 can be channelized. If ports 96 and 100 are channelized, the interfaces on ports 97, 98, 99, 101, 102, and 103 are disabled.
Chassis Status LEDs on an ACX5000 Router
The ACX5000 routers has four status LEDs on the FRU side of the chassis, next to the management ports (see Figure 7).

1 — Status LEDs | 4 — RJ-45 console port (C0N) ) |
2 — em1–SFP management Ethernet port (C1) Cage (socket for either 10/100/1000 Base-T RJ45
SFP or 1GbE fiber SFP) | 5 — USB port |
3 — em0–RJ-45 (10/100/1000 Base-T) management Ethernet
port (C0) |
Table 1 describes
the chassis status LEDs on an ACX5000 router, their colors and states,
and the status they indicate. You can view the colors of the three
LEDs remotely through the CLI by issuing the operational mode command show chassis lcd
.
Name |
Color |
State |
Description |
---|---|---|---|
ALM–Alarm or beacon |
Unlit |
Off |
The router is halted or there is no alarm. |
Red |
On steadily |
A major hardware fault has occurred, such as a temperature alarm or power failure, and the router has halted. Power off the ACX5000 router by setting the AC power source outlet to the OFF (O) position, or unplugging the AC power cords. Correct any voltage or site temperature issues, and allow the router to cool down. Power on the ACX5000 router and monitor the power supply and fan LEDs to help determine where the error is occurring. |
|
Amber |
On steadily |
A minor alarm has occurred, such as a software error. Power off the ACX5000 router by setting the AC power source outlet to the OFF (O) position, or unplugging the AC power cords. Power on the ACX5000 router and monitor the status LEDs to ensure that Junos OS boots properly. |
|
SYS–System |
Unlit |
Off |
The router is powered off or halted. |
Green |
On steadily |
Junos OS for ACX Series is loaded on the router. |
|
MST–Primary |
Unlit |
Off |
The router is a linecard member. |
Green |
On steadily |
The router is a standalone router. |
|
ID–Identification |
Unlit |
Off |
The beacon feature is not enabled on the router. This
feature is enabled using the |
Blue |
Blinking |
The beacon feature is enabled on the router. This feature
is enabled using the |
See Also
Management Port LEDs on an ACX5000 Router
The management ports (labeled C0 for 10/100/1000 Base-T and C1 for 10/100/1000 Base-T and SFP 1000 Base-X connections) on an ACX5000 router have two LEDs that indicate link status and link activity (see Figure 8). The left LED indicates status; the right LED indicates link/activity.


1 — Status LEDs | 4 — RJ-45 console port (C0N) ) |
2 — em1–SFP management Ethernet port (C1) Cage (socket for either 10/100/1000 Base-T RJ45
SFP or 1GbE fiber SFP) | 5 — USB port |
3 — em0–RJ-45 (10/100/1000 Base-T) management Ethernet
port (C0) |
Table 2 describes the management port LEDs.
LED |
Color |
State |
Description |
---|---|---|---|
Link/Activity |
Unlit |
Off |
No link is established, there is a fault, or the link is down. |
Green |
On steadily |
A link is established, but there is no link activity. |
|
Blinking or flickering |
A link is established, and there is link activity. |
||
Status |
Unlit |
Off |
Either the port speed is 10 M or the link is down. |
Green |
On steadily |
The port speed is 1000 M. |
|
Amber |
On steadily |
The port speed is 100 M. |
See Also
Access Port and Uplink Port LEDs on an ACX5000 Router
The Link/Activity and Status LED configuration for ACX5000 routers use bi-colored LEDs. The link LED indicates link activity or a fault. The status LED indicates transceiver presence. See Table 3 to locate the position and type of LED for your ACX5000 model.
Model |
Port Type |
Indicators |
Location |
---|---|---|---|
ACX5048 |
SFP+ |
LinkStatus |
![]() |
ACX5096 |
SFP+ |
LinkStatus |
![]() |
Table 4 describes how to interpret the SFP+ port LEDs.
LED |
Color |
State |
Description |
---|---|---|---|
Link/Activity |
Unlit |
Off |
The port is administratively disabled, there is no power, the link is down, or there is a fault. |
Green |
On steadily |
A link is established, but there is no link activity. |
|
Blinking |
A link is established, and there is link activity. |
||
Amber |
Blinking |
The beacon is enabled on the port. |
|
Status |
Unlit |
Off |
The link is down. |
Amber |
Blinking |
The beacon function is enabled on the port. |
|
Green |
Blinking |
A 1-Gigabit Ethernet transceiver is installed in the port and the link is established. |
|
Green |
On steadily |
A 10-Gigabit Ethernet transceiver is installed in the port and link is established. |
As shown in Table 3, there are four bi-color LEDs for each QSFP+ port. The first LED is used and the remaining LEDs are not used when the interface is configured for 40-Gigabit Ethernet and connected to a QSFP+ transceiver. All four LEDs are used when the interface is configured for 10-Gigabit Ethernet and the port is connected using an optical split cable or a copper DACBO cable. Table 5 describes how to interpret the QSFP+ LEDs.
Color |
State |
Description |
---|---|---|
Unlit |
Off |
The port is administratively disabled, there is no power, the link is down, or there is a fault. Note:
When configured for 10-Gigabit Ethernet, the LED remains unlit only if all four of the 10-Gigabit Ethernet SFP+ breakout links are down. |
Green |
On steadily |
A link is established, but there is no link activity. Note:
When configured for 10-Gigabit Ethernet, the LED is lit green when at least one of the four 10-Gigabit Ethernet SFP+ breakout links is established. |
Blinking |
A link is established, and there is link activity. Note:
When configured for 10-Gigabit Ethernet, the LED is lit green when at least one of the four 10-Gigabit Ethernet SFP+ breakout links is established. |
|
Amber |
Blinking |
All four LEDs blink to indicate the beacon function was enabled on the port. |