[OpenVNet] The introduction of OpenVNet

Why I pay attention to OpenVNet is because it uses Trema-Edge as OpenFlow 1.3 Controller to communicate with Open vSwitch 1.10. It gives us a great example to use Trema-Edge in Virtual Network Environment and learn more about some use cases. Please check out the following lists:

What is OpenVNet?
http://www.slideshare.net/akirayokokawa/openvnet

Offical Web Site:
http://openvnet.com/

Github Source:
https://github.com/axsh/openvnet

[Quagga] How to compile and install Quagga on Ubuntu 12.04

The following steps are the compilation and installation for Quagga on Ubuntu 12.04. Hopefully it is helpful for you.

• Install all dependency(package) 
• sudo apt-get build-dep quagga
• Give the path for all configurations files and libraries used by quagga for starting. I use this one /opt/quagga .... and this is done by this comand: 
• ./configure --enable-vtysh --prefix=/opt/quagga --localstatedir=/opt/quagga sysconfdir=/opt/quagga 
• Create new folder: 
• sudo mkdir /opt/quagga
• Add new user : 
• sudo adduser quagga 
• Give the priviledge for the user quagga over the folder: /opt/quagga and for the folders and subfolders you give the privilegde for all rights : reading, changing and executing
• sudo chown quagga:quagga /opt/quagga
• sudo chmod 777 /opt/quagga 
• Then you will be able to comiple Quagga: 
• make
• sudo make install 

Quagga configuration
--------------------
quagga version          : 0.99.22
host operating system   : linux-gnu
source code location    : .
compiler                : gcc
compiler flags          : -Os -fno-omit-frame-pointer -g -std=gnu99 -Wall -Wsign-compare -Wpointer-arith -Wbad-function-cast -Wwrite-strings -Wmissing-prototypes -Wmissing-declarations -Wchar-subscripts -Wcast-qual
make                    : make
includes                : 
linker flags            :  -lcrypt   -lrt -lcap  -lm
state file directory    : /opt/quagga
config file directory   : /opt/quagga
example directory       : /opt/quagga
user to run as  : quagga
group to run as  : quagga
group for vty sockets : 
config file mask        : 0600
log file mask           : 0600

Now, let us try Quagga for some examples

• Zebra
• Copy sample to conf file:
• cd /opt/quagga
• cp zebra.conf.sample zebra.conf
• Start zebra daemon, you use this command 
• sudo /opt/quagga/sbin/zebra &
• Check the daemon zebra:
• netstat -a | grep zebra 
• Get into the zebra, you use 
• telnet localhost zebra
• BGP
• Copy sample to conf file:
• cd /opt/quagga
• cp bgpd.conf.sample bgpd.conf
• Start bgpd: 
• sudo /opt/quagga/sbin/bgpd &
• Check the daemon zebra:
• netstat -a | grep bgpd
• Get into the bgpd, you use 
• telnet localhost bgpd
• vtysh
• cd /opt/quagga
• vi /opt/quagga/vtysh.conf
• sudo /opt/quagga/bin/vtysh

! Sample configuration file for vtysh.
!
!service integrated-vtysh-config
hostname quagga-router
username root nopassword
!

Stop Quagga Daemon ( for example: bgpd ):

• sudo kill `cat /opt/quagga/bgpd.pid`

Port Number:

• zebra: 2601
• ripd:  2602
• ripng: 2603
• ospfd: 2604
• bgpd:  2605
• ospf6d: 2606

Reference:
http://openmaniak.com/quagga_tutorial.php

http://wiki.nil.com/Installing_and_running_Quagga#Initial_configuratiom

http://sourceforge.net/apps/mediawiki/quagga/index.php?title=TipsNTricks

[EVB] What is EVB?

The introduction of EVB
http://networkerhere.blogspot.tw/2012/11/impact-of-server-virtualization-on_13.html
http://blog.ipspace.net/2011/05/edge-virtual-bridging-evb-8021qbg-eases.html

Due to overlay network, EVB is becoming to die ...!? The most main reason is that VLAN is not able to scale:
http://blog.ipspace.net/2012/02/edge-virtual-bridging-8021qbg.html

There are also some similar approaches, such as, VN-Tags that can do the same thing as EVB.
http://www.definethecloud.net/access-layer-network-virtualization-vn-tag-and-vepa/

[Puppet] The studying track of Puppet

After taking some time to study Puppet a while, I become to believe more and more that it is a great auto configuration tool. The following URLs are my studying track of Puppet.

For the beginner, it is recommended to walk through for learning the basic concept
Learning Puppet
http://docs.puppetlabs.com/learning/index.html

Once you finish the above document, you probably want to do your own type and provider. Here you go:
Customer Type
http://docs.puppetlabs.com/guides/custom_types.html
Provider Development
http://docs.puppetlabs.com/guides/provider_development.html

Juniper provides its open source project for using Puppet to manage and configure the switches that support Puppet Agent. It is a very good example for you to understand how to define customer type and to implement provider.

To define customer type:
https://github.com/NetdevOps/puppet-netdev-stdlib
To implement provider:
https://github.com/Juniper/puppet-netdev-stdlib-junos

[OpenFlow 1.X] The Flow Table Usage

When OpenFlow 1.0 guys try to reach the version 1.1 or more, the first question coming up with would most likely be "how to use multi-flow tables ?" Well, we could see an example in RYU OpenFlow Controller as follow: http://www.slideshare.net/yamahata/ryu-sdnframeworkupload
In page 33, there are 3 flow tables which contains match conditons and actions. It can give an initial idea for that question.






P.S: Pica8 works with Broadcom to double flow table size in its OF1.3 Switch
http://searchsdn.techtarget.com/news/2240214709/Pica8-doubles-flow-rule-capacity-in-its-new-OpenFlow-13-switch