For XenServer of versions 6.x were removed direct GUI ability to setup auto-start of Virtual Machines after the startup of main XenServer server. This ability have to be setup using CLI (Command line). To do that we have to:
1) Use ssh client for login into your xen server, and become the root
Using my VirtualBox linux machines (KaliLinux in my case) together with applying a couple of updates brought a problem, where the VB machine starts run out of disk space and I'm not able to update neither extend the system. This could be an often problem once we are trying to save some host system hard disk space using a small initial size of virtual machine disk partitions (12GB here).
The disk file cmd (df) reports:
Teaching CCNP ROUTE courses and describing the problematic of two-way routing redistribution I need an example describing the case which point out to the process of creating a routing loop. This example shows how such routing loop may arise using badly configured redistribution process andusing bad seed metric. The topology with two redisitributing routers creates routing feedback (two way, multipoint redistribution). The loop is created for packets routed from the ospf network to the 3.0.0.0/8 destination network.
TCPdump is a powerful command-line packet analyzer, which may be used for analyzing of DNS question/answer process. TCPdump is preinstalled on many linux distributions. For debian it can be installed directly from the debian repository:
apt-get install tcpdump
TCPdump allows write a sniff to file or display it realtime. It provides several ways how to use it for DNS analysis. Now I will write a few examples. Deeper description is at the bottom of the page.
apt-get update apt-get upgrade
As the first step we need to install packages necessary to build the main webrtc2sip gateway:
apt-get install build essential libtool automake subversion git pkg-config screen libxml2-dev / libssl-dev libsrtp0-dev
to support for libspeex (audio codec) and libspeexdsp (audio processing and jitter buffer) add
Author: Patrik Formanek 2014
This tutorial instruct how to add the WebSocket support for your kamailio SIP server. As the prerequisities we need to have successfully installed and working kamailio server (described within several tutorials in this site, for example Installing Kamailio 3.1 within SIP/Kamailio section of this site).
Simple IPv6 network calculator:
To test the basic Kamailio IMS setup, as it is described in book Kamailio 4.x IMS platform we need some IMS clients, here we use IMS Boghe. We will register it within IMS domain with suffix ims1.sip.uniza.sk.
