These are my notes for installing Cisco DNA Center: Things to look out for, things to check in the release notes. Accounts to keep track of – in a password safe please, password recovery is painful.maglev – this is your Linux root account. If this is gone you can recover it, but it’s painful. Access …
Category Archives: Tech
Fortigate performance – gotchas in hardware acceleration
Fortinet’s Fortigate firewalls have amazing performance for the dollar, all thanks to their strength in ASIC design: They use custom hardware chips to accelerate everything from straight packet-slinging to encryption to content inspection. When that hardware acceleration switches off, you may find yourself with terrible performance and CPU spikes. This article aims to document some …
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How to move from OneNote 2016 to OneNote Windows 10
Microsoft have stated that Windows 10 OneNote, the UWP version that installs from the store, is going to be the only one receiving new features. And OneNote 2016, the desktop client, is going to stay as-is. If, like me, you have a number of OneNote 2016 Notebooks, you may be stumped as to how to …
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IPv6 with Prefix Delegation on Fortigate
[Edit 2018-10-18] Make sure to use FortiOS 6.0.3 or later for this, as earlier versions of 6.0.x will force your interface to IPv6 “static” when you make any change to the interface from the GUI, including changes to its IPv4 configuration, such as a DHCP reservation. I have not tested 5.6.x but am assuming it …
JunOS SPACE installation notes
Installing JunOS SPACE can be a slog through documentation. These are my notes to help with the needed steps. Edit: vSphere 6.5 can have issues installing the OVA file provided by Juniper. Until Juniper provides OVF files, you can install ovftools and convert the OVA using those. ovftool -st=OVA -tt=OVF space-17.1R1.7.ova space-17.1R1.7.ovf Source (.ova) and …
JunOS SPACE upgrade to 16.1r2
These are my notes for upgrading JunOS SPACE from 15.2r2 to 16.1r1 or 16.1r2. They are meant to be consumed together with Juniper’s upgrade instructions. Since you are installing a fresh copy of JunOS SPACE as part of this upgrade, maybe now is also a good time to revisit some default settings. 16.1 is the …
JunOS SPACE fails when upgrading applications
When upgrading JunOS SPACE, the applications installed on it need to be upgraded as well. I’ve seen jboss crash and restart when several applications are upgraded in a row. This happened after moving to SPACE 16.1r2 and then again when upgrading to 17.1r1. JTAC advised that the issue is that Java runs out of “PermGen” …
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Installing VMWare Tools (Open VM Tools) on JunOS SPACE 16.1 or newer
These instructions are for JunOS SPACE 16.1 or newer. I also have instructions for JunOS SPACE 15.2 or older. JunOS SPACE, Juniper’s management tool for JunOS devices (switches, routers, firewalls), officially supports Open VM Tools for management from ESXi. Unfortunately, Juniper’s instructions are to build Open VM Tools, and that won’t work without a dev environment, …
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WSL “Bash on Windows” as a dev environment
Edit 2019-05-10: This post references WSL 1. I’m getting hyped for WSL 2, and won’t be pushing to make things like Swift work in WSL 1. I don’t aim to introduce WSL, or do more than link to installation steps. I do want to take a quick note of tweaks that have been helpful to me …
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JunOS SPACE upgrade hangs at 0%
I attempted to upgrade a JunOS SPACE instance from 15.2R1 to 15.2R2. It would sit at “upgrade process has not started” and 0%. If I changed the URI to the base, I’d be back in the SPACE GUI as if nothing had happened and I had never entered maintenance mode. This was caused by a …
Thorsten on (mostly) Tech 