Welcome to this compilation of the most common Juniper / Junos Troubleshooting and Operational Commands. Based on the documentation and the experience we have achieved along years working as a network engineer, we want to condense the hughest ammount of knowledge and experience in the minimum space, in order to become an useful "cheat sheet" able to help the network engineer on a daily basis.

We are not showing configuration commands. Juniper has tons of documentation in order to configure services. What we want to show is just the operational side, but focussing there, we want to create the best spreadsheet in the web. Please be welcome to help us with any additional commands or suggestions you may have. This site will always be under construction.      

We are commited to avoid any copyright infringement, so if someone feels we do, please let us know. Our e-mail address is Esta dirección de correo electrónico está siendo protegida contra los robots de spam. Necesita tener JavaScript habilitado para poder verlo.

Most of these commands will be valid for the following models: MX80, MX104, MX160, MX204, MX240, MX480, MX960, EX2200, EX2300, EX3300, EX3400, EX4200, EX4600, QFX5100, QFX5100, QFX5110, QFX5120, QFX5200, QFX10002, PTX100, PTX3000, PTX5000,  PTX10002, PTX10003, PTX10004, PTX10008, PTX10016, SRX300, SRX320, SRX340, SRX380, SRX550, SRX1500, SRX4100, SRX4200, SRX4600, SRX5400, SRX5600, SRX5800, ACX1000, ACX1100, ACX2100, ACX2200, ACX4000, ACX5000, ACX5400, ACX7000, ACX7100

Adittionally, feel free to check our other useful sites: www.bgplookingglass.com and www.routeservers.org 

IOS vs JUNOS vs IOS-XR (Basic Commands)
IOSJUNOSIOS-XR
 show version  show version    show version
show logging show log messages show logging
show interface transceiver show interface diagnosis optics sh controllers <interface-id> phy
Links of Interest
JTAC Contact Numbers http://www.juniper.net/support/requesting-support.html
Juniper Case Manager https://casemanager.juniper.net/casemanager/
Juniper Discussion Forum http://forums.juniper.net/t5/Discussion-Forums/ct-p/Forums
Junos Software Download Page https://www.juniper.net/support/downloads/
Juniper Problem Report Search https://prsearch.juniper.net/InfoCenter/index?page=prsearch
Juniper CLI Explorer https://apps.juniper.net/cli-explorer/
Unofficial Forum about Juniper https://lists.gt.net/nsp/juniper/
Unofficial IRC channel  Server: chat.freenode.net / Channel: #Juniper
Juniper Configuration Operational Commands
edit / configure enter configuration mode
exit configuration-mode exit from configuration mode to operational mode without committing config changes
top moves to the top level of the configuration hierarchy
top edit <path> moves directly a specific path in the configuration hierarchy
up moves up one level of configuration 
copy <statement 1> to <statemement 2> duplicates statement 1 and the entire hierarchy of statements configured under that statement
annotate add comments to a configuration at the current hierarchy level.
activate / deactivate activate / deactivate a configuration statement. if deactivated, config won't take effect when commited.
rename <id1> to <id2> rename identifier id1 to id2
insert term <stat1> before/after <stat2> moves relative position between terms
replace pattern <pattern1> with <pattern2> replace a pattern with a different one
protect <path> protect the device configuration from being modified or deleted by other users
show configuration | display set displays original commands used to enter configuration
show configuration | display set relative displays original commands used to enter configuration just related to the current hierarchy level
show configuration | display inheritance displays config including inherited terms from specific groups
show configuration | no-more displays config without pagination
show configuration | match <exp> displays config lines matching an expression
show configuration | find <exp> displays config lines starting in the first match of one specific expression
run ......  from configuration mode, execute commands in operational mode 
configure private / update enter configuration mode to edit privately from other users. commit only apply current user changes, not to others. to synchronize with other users, enter update command
configure exclusive bans any other users of comitting changes
Juniper CLI & Date Operational Commands
show cli history show current session executed commands
show cli authorization  show my user authorization level
set cli directory <path> changes current directory to the selected path
set cli timestamp  makes cli outputs with timestamp
set date <YYYYMMDDhhmm.ss> set time & date
Juniper Commit Operational Commands
commit save, validate and activate a complete config
commit check  check for syntax errors in the candidate configuration
commit confirmed <minutes> commit configuration and roll it back after a number of minutes (10 minutes default)
commit-and-quit  commit configuration and exit configuration mode
commit synchronize commit changes in all routing engines 
commit at <yyyy-mm-dd hh:mm[:ss]>  commit config at a certain time/date 
commit at reboot commit config at next reboot
commit comment  commit config adding changes description
commit full commit config restarting all deamons (be very careful when applying this command)
commit | display detail monitor the Junos commit process
clear system commit from operational mode, clear all pending commit requests (similar to rollback)
show system commit show list of commited config files
show system rollback compare 4 8 display differences between config files 4 and 8
show system rollback 32 displays rollback config file 32
request system commit commit changes from operational mode
show | compare show candidate configuration
show configuration | compare from operational mode, show candidate configuration
rollback returns to the most recently committed configuration and loads it without activating it, you need to commit it later
rollback 0 discard uncommited changes
rollback 22 loads config file 22 without activating it, you need to commit it later
Juniper VRRP Operational Commands
show vrrp detail/extensive show information about vrrp groups
clear vrrp clear vrrp stats
Juniper LACP & MC-LAG Operational Commands
show iccp  
show interfaces mc-ae  
show lacp interfaces  
show interfaces ae0 extensive  
Juniper Chassis Operational Commands
show chassis hardware displays a list of all Flexible PIC Concentrators (FPCs) and PICs installed in the router or switch chassis, including the hardware version level and serial number
show chassis routing-engine displays info like memory load, CPU load, temperature and other parameters related to each Routing Engine. It also shows when it was the last reboot and why this happened
show chassis alarms displays information about the the conditions that have been configured to trigger alarms
show chassis environment displays environmental/temperature information related to the device. Also it shows power supply status
show chassis fpc detail  
show chassis mac-addresses displays the media access control (MAC) addresses for the router or switch  
show system core-dumps shows system crash dumps 
show system alarms displays active system alarms
Juniper Beacon & Display Commands
set chassis display fpc-slot 3 message Hola shows message "hola" in VC member 3 lcd display
request chassis beacon fpc 2 on  turns on beacon on fpc number 2
Juniper Switching & ARP Operational Commands
show ethernet-switching table show MAC table
clear ethernet-switching table clears MAC table
clear ethernet-switching table interface clears MAC table interface status
show ethernet-switching redundancy-groups arp-statistics displays MC-LAG ARP statistics
show services statistics arp  displays ARP statistics
show arp show ARPtable 
Juniper Spanning Tree Operational Commands
show spanning-tree bridge show STP bridge parameters
show spanning-tree interface show STP interface parameters
show spanning-tree mstp show Multiple Spanning Tree Protocol information
show spanning-tree statistics show STP statistics
clear spanning-tree statistics clear STP statistics
Juniper Fusion Commands
request chassis satellite shell-command fpc-slot 101 "shutdown -h now" send shell comand to a Junos Fusion Satellite (in this case send "shutdown -h now" to FPC 101)
show chassis satellite verifies that a device is recognized as a satellite device by the aggregator device
show chassis satellite interface verifies cascade ports and uplink ports state
show chassis satellite neighbor verifies that a cascade port recognizes a satellite device
show chassis satellite terse verifies the hardware model of each satellite device
Juniper Packet Forwarding Engine Operational Commands
 show pfe terse show list of Packet Forwarding Engine components
 show pfe route show Packet Forwarding Engine routing table
 show pfe statistics show Packet Forwarding Engine statistics
Juniper Virtual Chassis Operational Commands
show virtual-chassis shows virtual chassis members, their serial number, status, role (master, backup, linecard, VC interface involved) 
show virtual-chassis vc-port show inter-chassis interfaces anc vc-ports associated
request session member X login a particular member (X) of the virtual chassis
request chassis routing-engine master switch force routing-engine mastership switchover
show version invoke-on all-routing-engine show Junos version installed in each Virtual Chassis member. It also applies to Standalone chassis with dual routing engines
Junos BFD Operational Commands
show bfd session display BFD session statistics
clear bfd session clear bfd sessions
clear bfd adaptation clear bfd parameters
Juniper RSVP Commands
clear rsvp session clear RSVP sessions and trigger fast reroute optimization
show rsvp interface display the status of interfaces on which RSVP is running
show rsvp neighbor display RSVP neighbors
show rsvp session display currently active RSVP sessions
show rsvp statistics display RSVP packet and error counters
show rsvp version display RSVP version and configuration information
Juniper PPP Operational Commands
show ppp summary show PPP summary information
show ppp statistics show PPP statistics
show ppp interface show PPP interface information
show ppp address-pool show PPP address pool information
clear ppp statistics clear PPP statistics
Juniper Help Operational Commands
help apropos <topic> shows all commands related to the topic
help topic <topic> help for high level topics
help reference <topic> help information about a topic
help tip cli displays a random tip
help syslog info about specific error messages
Juniper RSI & Logs 
request support information | save /var/tmp/rsi.txt gets RSI info and stores it in rsi.txt file
file archive compress source /var/log/ destination /var/tmp/logfile.tgz compresses /log directory into one file
Juniper User Management Commands
show system users  show connected users to the device
request system logout user xxx  force logout to user xxx 
request message all message "hola" send message "hola" to all logged users in the device
show arp | request message user will.jack sends arp table output to will.jack terminal
show log user all-members displays all users last logins
status display the users currently editing the configuration
Load Commands
load merge terminal loads and merge config directly from router terminal
load merge terminal relative loads and merge config relative to current edit point 
load merge /var/tmp/ddd.txt loads and merge directly from file
load replace terminal loads and replace config directly from router terminal
load replace terminal relative loads and merge config relative to current edit point 
load replace /var/tmp/ddd.txt loads and merge directly from file 
Juniper Request Commands
request system reboot reboot device
request system halt gracefully terminates software processes, but not the chassis
request system zeroize erase all data (config + logs)
request system power-off power-off all the chassis (but the fun)
request session member 4 log in virtual-chassis member number 4
Juniper Monitoring Commands
monitor start messages  displays "messages" log file in real time
monitor stop messages stops displaying "messages" log file in real time
monitor interface ge-x/y/z  real-time statistics monitor of one interface
monitor traffic interface ge-x/y/z no-resolve detail displays real-time control traffic
monitor traffic interface ae10 extensive no-resolve write-file /var/tmp/test.pcap It creates a pcap file of a trace in interface ae10 (tested in MX routers). This can be exported and opened with Wireshark tool.
Juniper DHCP Operational Commands
show dhcp relay binding <routing-instance name> shows current dhcp leases 
Juniper SNMP Commands
show snmp mib get <oid> show value for a specific OID
show snmp mib walk <oid>   show snmpwalk for that specific OID
Juniper Shell Commands
start shell enter shell mode
cli enter cli mode
start shell user root enter shell with root user
top lists running processes
df -k lists disk partition
 Juniper FPC Commands

start shell pfe network fpc0

              or

start shell + vty fpc0

 enter fpc0 cli  
test xfp 1 laser off   disable XFP optic 1
Juniper OSPF Operational Commands
show ip ospf database  view OSPF database
show ip ospf interface  view OSPF interfaces
show ip route ospf  display the current state of the routing table learnt through OSPF Protocol
Juniper DDoS Violation Operational Commands
show ddos-protection protocols it shows an overview of the DDoS violation, sorted by ptotocol
show ddos-protection protocols statistics brief it shows an overview of the DDoS violation statistics
show ddos-protection resolve it shows specific information about DDoS violations for the protocol "resolve". There are more than 40 protocols to be queried