Recently Updated Pages
Port Vlan Mirror Analyzer
(2022-05-26) Port or VLAN Source Mirror Port examples: show | display set | match forwarding-op s...
Port Vlan Mirror Analyzer
(2022-05-26) Port or VLAN Source Mirror Port examples: show | display set | match forwarding-op s...
SNMP port-to-interface
(Note to Googlers: I'm more than a little surprised to get so many hits on this page so soon. To ...
Show Uncommitted Configuration Changes
List uncommitted configuration changes show | compare rollback 0 eg: root@router# show | compare...
vlan-id(32768) to bd-id mapping doesn't exist in itable
(2021-10-27) Problem Syslog noise: vlan-id(32768) to bd-id mapping doesn't exist in itable Solut...
Virtual Chassis FPC Replacement
(2015-04-16) Problem One of my FPC units in my virtual chassis is dead and I need to insert a rep...
Upgrade bank is empty or corrupted for FPC 0, please do standard upgrade sequence
(31 December 2012) Problem After a JunOS upgrade (in our case from 10.5R5.5 to 11.4R6.5), the swi...
This device has booted from the backup JunOS Image
(2017-01-25) Problem WARNING: THIS DEVICE HAS BOOTED FROM THE BACKUP JUNOS IMAGE It is possible t...
Storm Control
(7 June 2012) Problem: Jun 7 12:16:55 sa2-40.gridwayit.local eswd[940]: ESWD_ST_CTL_ERROR_IN_EFF...
SSH PubKey Login
(2018-12-19) Problem Want SSH Pubkey authentication for my AD-backed administrative user. Specifi...
Rescue Configuration
(25 June 2012) Problem I have an amber Alarm LED but both the web interface and the CLI alarm com...
Remote Admin Authentication Via Radius
(2013-04-05) On The Switch This grants all members of an appropriate group super-user level acces...
QOS
(2016-03-07) Quick QOS Setup for Voice This is valid for JunOS 12.3R3.4 set class-of-service clas...
Port VLAN Gotcha
(2013-11-15) Problem I have a VLAN with ports defined as so: set vlans MyLAN interface ge-0/0/16....
OS Shell
(2021-10-27) Problem I want shell on the switch. Solution > start shell sh
Maximum Spanning Tree Diameter
(2019-07-11) What is the maximum diameter of a spanning tree? By default, the maximum number of l...
VLAN IP Interface
(2023-01-19) IP address on a VLAN # show | display set | match Test set vlans Test-2500 descripti...
Useful Commands
Notes for Juniper EX4200 JunOS 10.1 Showing the config in "set" commands rather than brace-format...
Switch Forwarding Table
Switching Table Look at the current forwarding table: root@sa4-39> show ethernet-switching table ...
Reverting Configurations
Rolling Back Commits Every time you make a change through the web UI it counts as a "commit". Som...