Posts belonging to Category How To



HowTo: Building to Building PTP links using MikroTik Wireless Products

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We are often asked how to make building to building or ‘point to point’ wireless links. As the MikroTik interface does not change between models this ‘How To’ can apply to any MikroTik Wireless based device. For this How To I will be using a pair of the new MikroTik SXT AC’s, to create a L2 transparent wireless bridge in a simple point to point mode (PtP).  This How To can also apply to point to multi point scenarios (PtMP). One SXT will be set up in ‘Bridge’ mode (effectively an AP) and the other as ‘Station Bridge’ (i.e. the ‘client’), to ensure best performance the link will be created and secured using the Mikrotik NV2 TDMA based protocol.
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HowTo: Building to Building PTP links using Ubiquiti Airmax products

(This how to also applies to 2.4GHz Ubiquiti Equipment)

We are often asked how to make building to building or ‘point to point’ wireless links. This HowTo explains how to use Ubiquiti Nanostations to make a transparent link.

The first port of call for configuring any Ubiquiti device is to manually change your systems IP address in order to communicate with the Ubiquiti equipment, in this HowTo I will be using 192.168.1.10 as my system IP (note that many Ubiquiti devices are configured on 192.168.1.20 from the manufacturer by default).
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HowTo: Ubiquiti mFi mPower

Ubiquiti recently made their 3 port mFi mPower (EU plug only) available in Europe. It provides 3 plug sockets that can be controlled via WiFi using their freely downloadable mFi controller software. Setup is fairly straight forward.

mPower Initial config

In the first instance the mPower becomes an access point that you can connect your PC/Laptop or in my case my mobile phone to. The access point will have the name of mFi followed by the last 3 octets of its MAC address. There’s no encryption of password required to connect at this point.
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HowTo: Ubiquiti EdgeRouter performance testing

Ubiquiti EdgeRouter Lite 3-Port EdgeMAX Router
The EdgeRouter Lite from Ubiquiti promises excellent performance for a great price.
So what performance can you get out of it ?

We tested two things:

1) a typical routed configuration, including NAT, and stateful firewalling.
2) IPSec over a routed connection.

Here are the headline figures: (tests using iperf over TCP, details shown later)

1) 888 Mbits/sec routed
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HowTo: IPv6 over PPPoE on the Ubiquiti EdgeRouter Lite 3-Port EdgeMAX Router

The new 1.2.0beta2 version of the EdgeMAX software on the EdgeRouter Lite has the following entry in its changelog:

[PPPoE] Add IPv6 settings for PPPoE client interfaces, which allows a PPPoE client interface to work with IPv6 address

So how does that work and how can we use it ?
Ubiquiti EdgeRouter Lite 3-Port EdgeMAX Router
Our ISP, Andrews & Arnold, provides native IPv6 over PPPoE, so we thought we would test it.
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HowTo: Managing POE for multiple radios

A typical wireless broadband provider/WISP usually has multiple radios, each with their own POE connection.

Here’s a way of providing Gigabit POE with the ability to power cycle individual radios:

For Gigabit POE we use a MikroTik RouterBoard Gigabit Passive PoE Injector:

LinITX.com product Gigabit PoE Injector main image.

 

Each POE injector plugs into the main router and has  power fed to it  from a single 28V PSU via a relay, i.e. there is one relay per POE injector.
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HowTo: Adding FTP To The Ubiquiti AirCam Mini

Unfortunately the Ubiquiti AirCam Mini doesn’t, out of the box, allow you to FTP images from the camera to a remote server.

Ubiquiti AirCAM Indoor Mini IP Camera – 720p H.264

We can however fix that though in this instance we’re looking at sending single frames, not streamed video. The AirCam has something in common with many Ubiquiti products, it runs Linux. This means we can compile applications and use ssh and scp. For those that find compilation a bit daunting, at the bottom of this post, there’s a link to a tarball containing all the files you need to get this working. Just read the post so you know what’s going on.
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HowTo: Control privacy addressing for IPv6 in Linux

It seems that some people didn’t like their MAC address being magically used as part of their IPv6 address, and so some bright spark created the concept of privacy addresses – see RFC3041

However sometimes we need to be able to control the behaviour, sometimes we want to enable them and sometimes we want to disable them.

Under Linux we can do this by altering values in sysctl, these are documented in ip-sysctl.txt
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