Crafting VxLAN packets using Ostinato

By guest On September 6, 2011 Leave a Comment    306 views
Ostinato VxLan Protocol Data

The buzzwords these days are “virtualization” and “cloud”. At the recently concluded VMworld 2011, VMware and Cisco announced the VxLAN technology which was developed to address scalability problems in today’s data centers. Virtualized data centers today using traditional VLANs have scaling problems due to the 12-bit VLAN space which translates to a maximum of 4094 usable VLANs. Another requirement for multi-tenant networks is to isolate tenant traffic from one another. A VLAN could be used to provide this isolation on a L2 network but is again limited by the the….. Read More

Ostinato – Free Ethernet Packet Generator For Windows And Linux

By Shivam Vaid On April 22, 2010 5 Comments    6,390 views

Hey I need to send a IP packet with destination address 172.26.57.86 and mac address 00:11:22:33:44:55 for doing some protocol testing. What should I do? Hmmm may be capture a similar packet in ethereal, modify the contents and send it out using some tool. OK – but what about checksums and all – how to make sure they are re-computed. Hmmm In that case – use Ixia/Smartbits – they will do the job for you OK – but the ports are limited and I wont get one just for sending….. Read More

Identi.ca – The Open Source Twitter

By Shivam Vaid On January 15, 2010 Leave a Comment    33 views
Identi_ca

Twitter is one of the most popular social networking application being used today. Right from politicians, professional to celebrities – everyone uses twitter to share their thoughts and feeling with their social counterparts. While we all are aware about twitter, most of us don’t know that there is also another excellent open source application called Identi.ca which is also a similar micro blogging service. Some important points about this service are You need to register for creating your own account You can then post short 140 character messages which can….. Read More

OSAlt – Your Open Source Alternative

By Shivam Vaid On December 29, 2009 Leave a Comment    90 views
OSAlt

I mentioned in my last post about how useful a tool Araxis is. Most of the good tools available today typically have a trial version which can be used for eg 30 days or so. In most cases, the trial version doesnt have all the features and also doesnt have the full capabilities.  To have all the features and capabilities available – one requires to shell out some money to buy the full version. Depending upon the requirement – this money might be well spent on that tool. However, today….. Read More