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or, It Will Happen To You Too, Kid (15 November 2011) I had to laugh the other week. Some Ubuntu user was up in arms over the inclusion of Gnome 3 into the latest release of Ubuntu-current. For those of you not playing along at home, the controversy in Gnome 3...

Five User Experience Principles Keep it simple. But not simpler. Keep scalability in mind. End users are not dumb. Administrators are human beings, too.

(12 January 2007) This is just a little story illustrating what happens when you use the best tools for the job, not merely the best tools you have available. So my Dell laptop finally packed it in (mainboard failure -- at least, that what the Dell Dude who is...

Question: Why would anyone in their right mind build and install software from source code? (originally: I don't know why i build software without package managers.) Answer: Because you can customize it to your local requirements (AKA the Gentoo Lie) Because ...

(21 September 2011) The Problem The problem with the Blackberry App (or AppStore App (or whatever)) is that the apps version churn. It seems like every week or two you get a notification that one of the four free apps you've downloaded has an "update", and you...

(27 June 2012) on JunOS 10.4r5.5 Simple LAG Creation Tell the switch how many aggregated ethernet (ae) devices we are going to define on the switch: set chassis aggregated-devices ethernet device-count 2 This example permits you to define two ae devices, ae0 ...

(2016-09-07) Problem There's an edit session, that you are not connected to, that you want to close. Solution Find the other session (probably listed to you in the warning when you enter the edit mode): operator@router> show system users no-resolve operator ...

(2013-07-19) This is how I configure my EX2200 when I first get them. New EX2200 Initial Setup We reserve 10.30.1.99 as the IP address for a switch being set up. If you have a pre-allocated name and IP for the switch, you should substitute those for the releva...

(7 September 2012) Problem When you run switchwalk, it complains that a table is empty or missing: $ switchwalk 00:0C:29:22:8D:97 [...] sa1-41 ERROR: Requested table is empty or does not exist This is a snmp query made against the Q-Bridge-II table to identif...

(2014-08-13) These notes are for JunOS 12.3R3.4. You do not need an enhanced license to use Virtual Chassis on 12.3; I know that you do for some versions of JunOS 11. Reading the relevant section in book-software-ex-series-123-all.pdf , particularly the exampl...

Rolling Back Commits Every time you make a change through the web UI it counts as a "commit". Sometimes you need to revert to a pre-commit state. In our case, a change committed re-applied VPN macros that we didn't want applied. The simplest way to correct the...

Switching Table Look at the current forwarding table: root@sa4-39> show ethernet-switching table Match a particular address: root@stack> show ethernet-switching table | match 58:00:01 Lab411 00:00:07:58:00:01 Learn 1:27 ge-1/0/42.0 Look at...

Notes for Juniper EX4200 JunOS 10.1 Showing the config in "set" commands rather than brace-format root@sa4-38# show | display set Showing the difference between the running and uncommitted config: root@sa4-39# show | compare Discard uncommitted changes: root...

(31 January 2013) Problem I think in set commands, not the fancy braces that JunOS likes to display. I'd like rancid to output my JunOS configuration diffs in set commands. Solution for v3.x In /etc/rancid/rancid/types.base, find the appropriate show configura...

(2013-07-24) To enable basic snmp on an SRX: set snmp description Firewall set snmp location "Location" set snmp contact "support@company.co" set snmp interface vlan.0 set snmp community public authorization read-only set security zones security-zone trust int...

(2017-08-05) Problem System alarm: autorecovery information needs to be saved Solution root@gateway> request system autorecovery state save Saving config recovery information Saving license recovery information Saving BSD label recovery information root@gatew...

(2015-03-10) If traffic is going from trust to the vpn zone, and that traffic matches the rule supplied, then NAT the outbound traffic to the interface's IP. set security nat source rule-set example-nat from zone trust set security nat source rule-set example-...

(23 March 2012) Define CIFS for JunOS 10 edit applications application CIFS set term CIFS-1 protocol tcp source-port 0-65535 destination-port 137-139 set term CIFS-2 protocol udp source-port 0-65535 destination-port 137-139 set term CIFS-3 protocol tcp source-...

Just following the cook book at Juniper KB15504 is incomplete in some key areas. The main problem is that the out-of-the-box settings for JunOS 10.x (up to 10.4 which is what arrived on my most recent set of SRXs) conflict with the proposed clustering setup. (...

(10 February 2012) Background: I'm a Netscreen ScreenOS administrator and I'm coming to grips with JunOS. These are my notes on VPNs. A Note About Naming And Commands JunOS is smart, in that you can have objects of different types, and JunOS will use the corre...