Crafting VxLAN packets using Ostinato

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

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