admiralarjun System Information show system alarms - Alarm messages. show system boot-messages - Messages that log during boot. show system certificate - Shows all installed certs. show system commit - Shows commit history. show system connections - Shows all ports (LISTEN / ESTABLISHED) connection stats. show system information - High level system info like model, os, etc… show system login lockout - Shows lockedout users. clear system login lockout user user-name show system memory - Memory utilization show system reboot - Show reboot schedule request system reboot at time-goes-here show system rollback - Rollback to previous configs show system statistics - Stats of different protocol show system storage - Info about storage volumes, mount points, etc… show system uptime - Shows uptime of device, clock info, last commit with user, etc… show system users - Shows usernames that are logged in. Chassis Information show chassis alarms - Shows alarms show chassis environment - Shows components that are connected like RE, PSU, etc… show chassis hardware show chassis routing-engine - total memory, CPU utilization, etc… Interface Monitoring show interfaces - Lists all interfaces, stats and config of them. show interfaces terse - Summarized info and its IP config. show interfaces detail - Mostly for Troubleshooting show interfaces extensive - Shows all monitor interfaces traffic - Monitor real time traffic, updates and logs. monitor interface traffic - Show traffic data for busiest interfaces. monitor interfaces interface-name Naming Convention for software images Prior to Release 15.1 - package-release-edition Starting with Release 15.1 - prefix-architecture-ABI-release-edition sometimes, prefix-media-architecture-ABI-release-edition Example of prefix name of the Junos package junos-install-srx5600 Example of media only used when the image is not used with the request system software add command which will update or upgrade junos os usb for images installed from a USB or net for images installed from the loader prompt. Example of Architecture x86 for intel based platform or arm for advanced RISC Machines based platforms. Application binary interface indicates the word length of the CPU architecture 32 or 64 Release Includes major or minor release nums, release type (R,B or I), build num, and spin num. R - Released software B - beta-level software I - internal software S - Service releases Edition Either null (empty) or limited null is for standard domestic versions that supports strong encryption capabilities. limited built for jurisdictions with limits on dataplane encryption less common one, FIPS exists that provides advanced network security for customers who must comply with and operate in a Federal Information Processing Standards (FIPS) 140-2 environment. From 15.1, FIPS is packaged into domestic version andu ser can flip b/w regular and FIPS image when upgrading. Snapshots request system snapshot - stored on internal storage or USB. request system snapshot media usb Boot from the usb snapshot to restore, request system reboot media usb Upgrading Junos Connect to the console port. Backup the active file system using request system snapshot. Determine the Junos version with show version command. Download the install package from Juniper Website. Copy package to /var/tmp Verify checksum Upgrade using request system software add /var/tmp/package_name request system reboot and request system storage cleanup dry-run deletes all tmp files… Unified ISSU Unified In-Service Software Upgrade allows to upgrade your device between two different Junos releases with no disrupiton on the control plane and with minimal disruption of traffic. Supported on dual Routing Engine platforms. Also needs, GRES - Graceful Routing Engine Switchover. Interface and Kernel information is preserved. The limitation is when the mastership switches it looses control plane info causing to recalculate the routing associations. To overcome this, we can combine NSR. NSR - Nonstop Active Routing. Can save routing info while switchover by the routing protocol daemon (rpd) The master and backup routing engine must be running the same software version. This way we can eliminate the device downtime while upgrading the software image of the device. Root Password Recovery Connect using the console port and reboot the device As the system boots, press spacebar when prompted to access loader prompt. At the loader> promp, enter the command boot -s to boot into single-user mode When prompted, enter recovery which will put you in operational mode from where enter configure to go to configuration mode. Use set system root-authentication plain-text-password to set the pass. commit and request system reboot.