Config Cisco Nexus L3 vlan routing IPv6

October 30, 2020/0 Comments/in Network /by Erik Svensson

Config Cisco Nexus L3 vlan routing IPv6

This is a simple how to make a nexus switch L3 routeing and the connected access switches still on L2 switching. If you have a router connected between internet and the router switch. Make shure you have a static route configured to the two vlan network.

Router Switch

no system default interface-vlan autostate (brings up the vlan)

conf t

vlan 10 (creates vlan 10 L2)

name Servers vlan 10

exit

vlan 20 (creates vlan 20 L2)

name Servers vlan 20

exit

feature interface-vlan (Converts L2 vlan 10 to L3 vlan 10)

interface vlan 10

ipv6 address 2001:db8::/50

no ip redirects

exit

feature interface-vlan (Converts L2 vlan 20 to L3 vlan 20)

interface vlan 20

ipv6 address 2001db8:0:4000::/50

no ip redirects

exit

interface ethernet 1/1 (creates tagged vlan port to access sw1)

description To Access Sw1

switchport

switchport mode trunk

no shutdown

exit

interface ethernet 1/2 (creates tagegd vlan port to access sw1)

description to Access Sw2

switchport

switchport mode trunk

no shutdown

exit

interface ethernet 1/3 (Creates the link network port)

description to Internet

no switchport

ipv6 address 2001:db8:1000:8000::1/64

no shutdown

exit

ipv6 route :: 2001:db8:1000:8000::2 (makes default router to next hop router)

copy running-config startup-config

Access Sw1

conf t

vlan 10 (creates vlan 10 L2)

name Servers vlan 10

exit

vlan 20 (creates vlan 20 L2)

name Servers vlan 20

exit

interface ethernet 1/1 (creates tagged vlan port to Router switch)

description To Router Switch

switchport

switchport mode trunk

no shutdown

exit

interface ethernet 1/2 (creates untagged vlan 10 port to servers)

description Access vlan 10

switchport

switchport mode access vlan 10

no shutdown

exit

interface ethernet 1/3 (creates untagged vlan 20 port to servers)

description Access vlan 20

switchport

switchport mode access vlan 20

no shutdown

exit

copy running-config startup-config

Access Sw2

conf t

vlan 10 (creates vlan 10 L2)

name Servers vlan 10

exit

vlan 20 (creates vlan 10 L2)

name Servers vlan 20

exit

interface ethernet 1/1 (creates tagged vlan port to Router switch)

description To Router Switch

switchport

switchport mode trunk

no shutdown

exit

interface ethernet 1/2 (creates untagged vlan 10 port to servers)

description Access vlan 10

switchport

switchport mode access vlan 10

no shutdown

exit

interface ethernet 1/3 (creates untagged vlan 20 port to servers)

description Access vlan 20

switchport

switchport mode access vlan 20

no shutdown

exit

copy running-config startup-config

Config Cisco Nexus L3 vlan routing IPv4

October 26, 2020/0 Comments/in Network /by Erik Svensson

This is a simple how to make a nexus switch L3 routeing and the connected access switches still on L2 switching. If you have a router connected between internet and the router switch. Make shure you have a static route configured to the two vlan network.

Router Switch

no system default interface-vlan autostate (brings up the vlan)

conf t

vlan 10 (creates vlan 10 L2)

name Servers vlan 10

exit

vlan 20 (creates vlan 20 L2)

name Servers vlan 20

exit

feature interface-vlan (Converts L2 vlan 10 to L3 vlan 10)

interface vlan 10
ip address 1.1.1.1/24
no ip redirects

exit

feature interface-vlan (Converts L2 vlan 20 to L3 vlan 20)
interface vlan 20
ip address 2.2.2.2/24
no ip redirects

exit

interface ethernet 1/1 (creates tagged vlan port to access sw1)
description To Access Sw1
switchport
switchport mode trunk
no shutdown

exit

interface ethernet 1/2 (creates tagegd vlan port to access sw1)
description to Access Sw2
switchport
switchport mode trunk
no shutdown

exit

interface ethernet 1/3 (Creates the link network port)
description to Internet
no switchport
ip address 3.3.3.1/30
no shutdown

exit

ip route 0.0.0.0 0.0.0.0 3.3.3.2 (makes default router to next hop router)

copy running-config startup-config

Access Sw1

conf t

vlan 10 (creates vlan 10 L2)

name Servers vlan 10

exit

vlan 20 (creates vlan 20 L2)

name Servers vlan 20

exit

interface ethernet 1/1 (creates tagged vlan port to Router switch)
description To Router Switch
switchport
switchport mode trunk
no shutdown

exit

interface ethernet 1/2 (creates untagged vlan 10 port to servers)
description Access vlan 10
switchport
switchport mode access vlan 10
no shutdown

exit

interface ethernet 1/3 (creates untagged vlan 20 port to servers)
description Access vlan 20
switchport
switchport mode access vlan 20
no shutdown

exit

copy running-config startup-config

Access Sw2

conf t

vlan 10 (creates vlan 10 L2)

name Servers vlan 10

exit

vlan 20 (creates vlan 10 L2)

name Servers vlan 20

exit

interface ethernet 1/1 (creates tagged vlan port to Router switch)
description To Router Switch
switchport
switchport mode trunk
no shutdown

exit

interface ethernet 1/2 (creates untagged vlan 10 port to servers)
description Access vlan 10
switchport
switchport mode access vlan 10
no shutdown

exit

interface ethernet 1/3 (creates untagged vlan 20 port to servers)
description Access vlan 20
switchport
switchport mode access vlan 20
no shutdown

exit

copy running-config startup-config

iFAQ auto expand all [solution]

October 24, 2020/0 Comments/in Joomla /by Stefan Helander

The Joomla! extension iFAQ from Ideal Extensions is a nice way of building a FAQ (Frequently Asked Questions) section on your website.

One feature I am missing though is to be able to select wether a FAQ list of articles should default to all open instead of closed. This is a simple workaround.

Add a module of the type Custom HTML and edit the module content using no editor. Publish the module in a suitable module position, like Debug.

Insert the following javascript into the module (remember, no editor mode):

<script>
jQuery(document).ready(function($) { 
  jQuery( "#expand-all" ).click(); 
});
</script>

By selecting which menu items the module is displayed for, you can choose the FAQ pages where you want to have the articles expanded by default.

Prestashop multistore – can’t get out of maintenance mode

March 19, 2020/0 Comments/in PrestaShop /by Stefan Helander

After maintenance even though setting to shop to active, frontend still shows maintenance mode. This can occur when multistore is enabled.

Solution:

Use for example phpMyAdmin to access the shop database
Find the ps_configuration table
Find all records with the name PS_SHOP_ENABLE and change them from ‘0’ to ‘1’ (there are probably more than one)

Joomla breadcrumbs not working, solved in JoomSEF by entering ItemID

Breadcrumbs only showing “Home” for Joomla article

March 18, 2020/0 Comments/in Joomla /by Stefan Helander

A Joomla article was published through a menu item (single article) but the breadcrumbs when displaying the article only showed “Home” (not clickable). The menu path and article title was missing in the breadcrumbs.

In this case JoomSEF was installed on the site. The solution was to find the SEF URL in JoomSEF (go to “Manage SEF URLs”). The ItemID field was empty.

The problem was solved by entering the menu ID for the menu item displaying the article in the ItemID field, saving and clearing the cache.

WordPress shows white page after site move

March 1, 2020/0 Comments/in Linux/FreeBSD, WordPress /by Stefan Helander

WordPress just showing a white page means it is experienceing PHP errors. When it occurs after a site has been moved from one hosting to another it can be caused by several reasons.

To make it possible to track down the cause you can temporarily add the following to the .htaccess file in the root. If this gives you a internal server error 500 it means it is not allowed by the host. If allowed, you will get error messages from PHP dispayed on screen when accessing the site:

php_flag display_startup_errors on
php_flag display_errors on

There are visbible PHP ending tags ?> on the site

If you see more or less normal output from the site but once in a while you see lines ending with ?>. This can happen if the site has been running on PHP 5 where the short PHP start tag <? is allowed (instead of the longer <?php.

If the site has been moved to PHP 7 where this is not longer allowed, it can cause this kind of strange behaviour.

If you don’t want to go through all the code and find all the occurrences of <? and replace them with <?php (which is one solution), you can simply add the following to your php.ini:

short_open_tag=On

You need to restart Apache after this.

Wordfence plugin is installed

You need to manually edit the system specific paths in the following files:

.user.ini in the site root, change the path after auto_prepend_file
wordfence-waf.php in the site root, change the paths on all occurrences

WP Rocket plugin is installed

The file wp-content/advanced-cache.php contains system specific paths. You can manually update them or just simply delete the file and login to wp-admin of the site and it will be recreated automatically with the correct paths.

How to remove PIN-code login method in Windows 10

February 2, 2020/0 Comments/in Windows /by Stefan Helander

In Windows 10 the user is asked to set a PIN-code for login instead of password. At login, the user can manually switch to password login each time. To completely disable PIN-code login, which also will disable fingerprint and face recognition login, do as follows:

Click on the Windows logo at the bottom left
Click on Settings (the gear icon)
Select Account
Click on Sign-in options
Click on PIN
Click on Remove
You will be asked for the user password

Don’t worry, if you want to enable it again you just follow the same steps but choose to install PIN.

Call Book Log 3 installation with custom database name

December 20, 2019/0 Comments/in Amateur radio /by Stefan Helander

Call Book Log 3 is a log book program for radio amateurs, hosted on a web server, based on PHP 7 and MySQL/mariaDB.

The database for the software is named ‘hamcallbook‘ by default but if you are going to host it on a server where you can’t choose the name of the database, like a web hosting company (“web hotel”) it will not install.

The solution is to simply edit the file setup2.php before starting the installation process. Search for all occurrences of ‘hamcallbook‘ and replace it with your database name.

After installing, edit the file dbconnect.php, find ‘hamcallbook‘ and replace it with your database name.

pfsense IPsec VPN tunnel disconnects after 8 hours

December 10, 2019/0 Comments/in Network /by Stefan Helander

I’ve been troubled by the annoying disconnection of the IPsec VPN tunnel on a pfsense firewall. The tunnel disconnects after about 8 hours.

The solution in my case was to enable “Disable rekey” which “Disables renegotiation when a connection is about to expire.“. The setting is found under Phase 1 advanced settings.