Symbols
A
- abnormal LED activity 1, 2
- access, management 1, 2
- setting up console 1, 2
- SNMP 1, 2
- Telnet setup
- accessing, fan tray
- adapters, I/O 1, 2
- agency certification 1, 2, 3, 4
- air filter 1
- airflow 1
- rack-mounted installation and
- specifications 1, 2
- alarm ports
- amperage 1, 2
- antistatic bags and containers
- assembly numbers, locating
- assigning an IP address
- auxiliary port 1, 2
B
- bays, upper and lower, right and left 1, 2, 3
- BNC connector
- booting
C
- cable management bracket
- cables
- cabling
- cabling router
- cabling SRP IOA
- Case Manager
- certification 1, 2, 3, 4
- chassis
- circulation, air
- classification, packet
- cleaning the router
- CLI (command-line interface)
- clock source input ports
- clocking problems
- command-line interface
- compliance
- components
- configuring cables 1, 2
- configuring management access
- configuring Telnet
- connecting console to the router
- connectors, pinouts
- console
- console port 1, 2
- consumption, power 1, 2
- conventions
- cooling system
- crossover cable
- current (electrical) requirements 1, 2
- customer support 1, 2
D
- damaged components, returning
- DB-9 connector 1, 2
- DC power 1, 2, 3
- detecting double-bit error
- diagnosing problems
- diagnostic LEDs
- dimensions of E120 router
- dimensions of E320 router
- dissipation, heat 1, 2
- distribution rack 1, 2
- documentation set
- double-bit errors
E
- E120 router
- assigning IP address to
- cabling
- cabling recommendations
- cleaning
- dimensions
- electrical requirements
- environmental requirements
- equipment rack requirements
- Ethernet cable
- installing
- installing modules
- lifting
- management access
- mechanical requirements
- modules
- power requirements
- powering down
- powering up
- safety guidelines
- site planning
- slot numbering
- space requirements 1, 2
- troubleshooting 1, 2
- unpacking
- views
- E320 router
- assigning IP address to
- cabling
- cabling recommendations
- cleaning
- dimensions
- electrical requirements
- environmental requirements
- equipment rack requirements
- Ethernet cable
- installing
- installing modules
- lifting
- management access
- mechanical requirements
- modules
- power requirements
- powering down
- powering up
- safety guidelines
- site planning
- slot numbering
- space requirements 1, 2
- troubleshooting 1, 2
- unpacking
- views
- EIA distribution rack
- ejectors, module
- electrical requirements 1, 2
- electronic equipment, recycling
- electrostatic discharge, precautions
- environmental requirements
- ESD grounding jack
- Ethernet link
- external timing ports
F
G
H
- halt command 1, 2
- hardware
- cable configuration 1, 2
- reclamation and recycling
- redundancy features
- repairing and replacing
- hazardous materials, reclamation and recycling
- heat dissipation 1, 2, 3
- high-availability mode
- hot-swapping fan trays
- hot-swapping modules
- humidity requirements 1, 2
- HyperTerminal
I
- I/O adapter 1, 2
- installing IOA shelf
- installing modules
- installing NVS cards 1
- installing router 1
- installing SFPs
- IOA module 1, 2
- IOA shelf 1
- IP address, assigning
J
L
M
- maintenance, system
- management
- management access 1, 2
- setting up console 1, 2
- SNMP 1, 2
- Telnet setup
- Management Information Bases
- management port
- managing modules
- manuals
- mechanical requirements for distribution rack
- MIBs (Management Information Bases)
- module reset button
- modules 1
- monitoring LEDs
- monitoring temperature
- mounting kits
- mounting posts for rack
N
- network management 1, 2
- setting up console 1, 2
- SNMP 1, 2
- Telnet setup
- network timing ports
- NMI button
- nonvolatile storage
- notice icons
- NVS cards 1
- installing 1, 2
- redundancy
- storing
O
P
- packaging, recycling
- packet classification
- packing instructions
- passwords, Telnet
- PC-CARD
- PCMCIA slot, SRP modules
- PDU 1
- pinouts, E Series router cables and connectors
- planning site for installation
- plenum
- ports
- power
- power distribution unit
- Power Distribution Unit (PDU)
- power input module, cabling
- power switches 1, 2
- powering down router
- powering up router
- preinstallation responsibilities
- preparing site for installation
- Privileged Exec command mode
- problems
- product numbers, locating
Q
R
- rack, distribution
- reclamation and recycling
- recycling Juniper Networks equipment
- redundancy 1
- regulatory requirements
- release mechanisms for SFPs
- removing components
- removing modules
- removing SFPs
- repacking components
- repairing hardware components
- replacing components
- replacing modules
- replacing NVS cards 1, 2, 3
- replacing SFPs 1, 2
- reset button
- resetting modules
- Restriction of Hazardous Substances (RoHS) Directive, recycling equipment
- Return Materials Authorization
- returning product
- RJ-45 connector 1, 2
- RMA (Return Materials Authorization)
- RoHS (Restriction of Hazardous Substances) Directive, recycling equipment
- RS-232 port 1, 2, 3, 4, 5
S
- safety
- agency certification 1, 2
- guidelines
- self-testing, modules
- serial numbers, locating
- SFM (switch fabric module) 1, 2
- SFPs (small form-factor pluggable transceivers) 1, 2
- show interface command
- show version command 1, 2, 3, 4, 5, 6, 7
- single-bit errors
- site planning
- size
- slices, fabric
- slot combinations 1, 2
- slot disable command
- slot groups 1
- slot numbering 1, 2
- small form-factor pluggable transceivers
- SNMP for management access 1, 2
- space requirements 1, 2, 3, 4
- specifications
- SRP (switch route processor) module 1, 2
- errors on
- installing
- IOA
- PCMCIA slot
- powering down
- redundancy
- removing 1, 2
- switch fabric slice 1, 2
- SRP IOA 1
- cabling 1, 2
- installing
- removing
- starting router
- static electricity, protecting against
- storing, modules and components
- support, technical See technical support
- switch fabric modules
- switch fabric slices 1, 2
- switch router processor modules
- switches, power 1, 2
- switchover, SRP modules
- synchronization, SRP modules
- system maintenance
T
- technical support 1
- Telnet connection to router
- temperature
- excessive 1, 2
- monitoring
- requirements 1, 2
- text and syntax conventions
- thermal protection mode 1, 2, 3
- timing port
- tools required
- cabling router
- installing modules
- removing components 1, 2
- unpacking router
- troubleshooting 1, 2
- booting
- cables 1, 2
- clocking
- double-bit errors
- Ethernet link
- fans 1, 2
- LED activity for
- modules 1, 2
- power failure 1, 2
- safety guidelines
U
V
W
- Waste Electrical and Electronic Equipment (WEEE) Directive. See WEEE Directive
- WEEE (Waste Electrical and Electronic Equipment) Directive, recycling equipment
- weight
- of E120 router
- of E320 router
- of rack 1, 2
Download This Guide
Understanding Status LEDs to Troubleshoot
Module LEDs can show you the immediate status of a module and alert you to a problem with the module or one of its ports. We recommend you familiarize yourself with LED activity so that you can easily detect and correct a module-related problem with minimal or no system downtime.
LED Identification
Most modules have two sets of status LEDs. The top set indicates basic functional status of the router or module. The bottom set indicates system status for that module, such as port status (line modules and IOAs) or fan status (SRP modules). See Figure 32 and Figure 33 for LED locations and labeling. See Table 10 for descriptions of LED activity for all modules and IOAs.
Figure 32: Typical IOA LEDs
Figure 33: SRP IOA Module LEDs
 | Note: The primary SRP module illuminates the REDUNDANT LED when the SRP module is part of a redundancy group and it is up and running (or ready to take over). The standby SRP module monitors an activity signal from the primary SRP module to determine its state; it does not shadow the operations of the primary SRP module. If the standby SRP module detects that the primary SRP module is not active (and high-availability mode is not enabled), it reboots the system and takes control. If high-availability mode has been enabled, automatic switchover occurs with near hitless failover. |
Table 10: LED Identification and Activity Descriptions
LED Location | LED Label | LED Indicator | LED Color | OFF to ON | ON to OFF |
|---|---|---|---|---|---|
| All modules | |||||
OK | Module status | Green | Self-test passed | Failure detected | |
FAIL | Module status | Red | Failure detected | Diagnostic test running | |
ONLINE | Module status | Green | Module online | Module offline | |
| Line module | |||||
REDUN | Redundancy | Green | Module is active, and a standby module is available | Module is active, and no standby module is available | |
| SFM module | |||||
REDUN | Redundancy | Green | N+1 redundancy is enabled; 2 SRPs and 3 SFMs must be installed and working. When LED is lit, you can remove the module without interrupting service. | One of the five fabric slices is down or not installed. N+1 redundancy is not enabled. | |
| SRP module | |||||
REDUN | Redundancy | Green | Module is the spare system controller, is up, and is ready to take the role of the online system controller. | Module is no longer acting as the spare system controller. | |
PA | Power A | Green | Power is online on source A. | Power is off. | |
PB | Power B | Green | Power is online on source B. | Power is off. | |
FO | Fan online | Green | Fan is online. | Critical fan failure. | |
FF | Fan failure | Red | Critical fan failure. | Fan is online. | |
Note: You can run the show environment command to see whether a noncritical fan failure exists. | |||||
LK | Ethernet link | Green | Ethernet link is up. | Ethernet link is down. | |
Note: In case of SRP hot-swap, when SRP IOA is removed, LK is turned off. When an SRP IOA is inserted, LK is green and stable. | |||||
AC | Ethernet activity | Green | Blinks when Ethernet traffic is on link. | No Ethernet traffic is on link. | |
Note: In case of SRP hot-swap, when SRP IOA is removed, AC is turned off. When an SRP IOA is inserted, AC is green and blinking. | |||||
| IOAs | Note: Not all IOAs have the following LEDs. | ||||
ALM | Port status | Yellow | The remote end of the link is experiencing loss of signal (FERF). | No FERF present, port is working correctly. | |
Port status | Red | Port is experiencing loss of signal. | Port is working correctly; in sync. | ||
OK | Port status | Physical link is connected properly and is functioning properly. | Physical link is not connected properly and is not functioning properly. | ||
LED Activity
When the system boots, it runs a series of tests for each module installed in the system, and the LEDs display various configurations. See Table 11 and Table 12 to understand normal and abnormal LED activity.
| Note: When you reboot the system after installing a new version of the software, the line modules appear to boot twice. |
Table 11: Normal Activity of Functional Status LEDs During Booting
OK | FAIL | ONLINE | Status Process |
|---|---|---|---|
off | off | off | 1. Module is in the power-up restart state; the FAIL LED stays on briefly. |
off | on | off | 2. Module is initializing, and diagnostic tests are running; the FAIL LED stays on briefly. |
on | off | off | 3. Module passed the diagnostics; the system boots. |
on | off | on | 4. Module is now up and running. |
If the system detects an error during booting, the FAIL LED lights. Some failure conditions can cause the module not to boot. In this case, the LEDs might all be off. The system then resets the module.
If the operational software detects an error, the FAIL LED lights. Some errors can cause a module reset. Crash information is displayed at the console on the next reboot.
Table 12: Troubleshooting Abnormal LED Activity on Modules
Diagnostic Signs | Possible Problems | Actions |
|---|---|---|
|
|
|
FAIL LED lights |
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|
|
| Contact the Juniper Networks Technical Assistance Center; the system must be serviced. Note: In the fan tray for the E320 Broadband Services Router, four of the eight fans turn on immediately upon initial power-up and the other four fans turn on after a delay of 10 seconds. |
LINK LED is not lit |
|
|
ALM LED is red |
|
|
ALM LED is yellow |
|
|
PA, FO, and LK LEDs on SRP module are on, but are off on LM and SFM module |
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