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.
Simple IPv6 network calculator:
System preparation
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
Objective
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.
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:
Download Siremis 4.1.0
Go to your desired folder (for example /var/www) and download Siremis from site http://siremis.asipto.com/pub/downloads/siremis/.
cd /var/www/ wget http://siremis.asipto.com/pub/downloads/siremis/siremis-4.1.0.tgz
Then extract Siremis folder from archive
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
Installation
First, add repository to system
vim /etc/apt/sources.list
add line
Remote telnet access from an remote IP address (PC, NB) to an console of router which is running on different PC/server is common practise used within dynagen/dynamips environment. However it works within GNS3 too. I was looking how to setup it, here is a short guide for system environment with GNS3 version 1.2.3 installed on my notebook running Win 7 Pro 64 bit.
Cisco releases some files (firmware, language files, ...) as .cop.sgn files. And sometimes, you need to uncompress it and reach files in this archive. "sgn" means, it is signed. Actually, there is only authentication header, which can be removed by editor. For Linux, we can use Bless hex editor. Open file in editor, and find pattern '1F 8B 08'.
