Latest Posts

A look at the Nexus 1000V cli

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Some of you may have caught the Cisco TechwiseTV episode yesterday on virtualization. The second segment of the program featured Dan Hersey from Cisco demonstrating the Nexus 1000V virtual switch running on a future generation of VMware ESX. Nexus 1000V is Cisco’s third party switch implementation for VMware Virtual Infrastructure that was announced at VMworld Read more...

Write some networking code… win a lot of money!

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Cisco is offering $100k for the best application written to their AXP (Application Extension Platform). That’s a lot of money! The cool thing about this is that you can develop this on an AXP VM running on VMware Player on your PC. i.e. you  don’t have to buy any Cisco hardware & software. Here is Read more...

Next Generation Virtual Networking

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At VMworld a few weeks back, we previewed the future of virtual networking with the vNetwork Distributed Switch and third party virtual switch support with the Cisco Nexus 1000V. I am delivering a webcast on October 16, titled "Next Generation Virtual Networking" where I will cover these announcements and give you some technical insight into Read more...

More buzz around vNetwork and Cisco Nexus 1000V

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The customer reaction to our networking announcements at VMworld has been fabulous. People really seemed to understand and see the relevance of our push toward greater manageability of the virtual network through our vNetwork Distributed Switch and how we are further embracing the "network team" and traditional network administration policies and boundaries through third party Read more...

September 16: A big day for virtual networking

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Yesterday was a huge day for virtualization and virtual networking. Jacob Jensen, accompanied by Paul Fazzone from Cisco, started the day with a tech preview to vNetwork Distributed Switching, and 3rd Party virtual switch support with the Cisco Nexus 1000V VDS is a major step forward in easing the administration burden of large virtual networks. Read more...

My VMworld networking session hitlist

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VMworld is the biggest event on our calendar and it will not be short of exciting announcements in the world of virtualization and networking. If you’re interested in networking and are going to VMworld here’s my hitlist of "must attend" sessions (in chronological order): Tuesday, Sep 16, 9:30am – TA2280 – Tech Preview: Virtual Switching Read more...

vnic bandwidth? … ignore what the guest VM tells you!

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I was speaking with a customer recently about networking when the topic turned to the virtual nic or vnic bandwidth available between a VM and the virtual switch. The customer complained that the server guys  were performing "gymnastics" in trying to change the speed from its reported value of 100Mbps to a more palatable speed Read more...

DMZ Virtualization

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In his Virtualization Blog this week, David Marshall from Infoworld mentioned a couple of recently published documents should make your reading lists. I have already talked about one of these in a previous post—“VI3 in a Cisco Network Environment.” The other document David mentions is, “DMZ Virtualization with VMware Infrastructure.” This paper discusses the pros Read more...

Using VLANs with ESX

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Most folks are aware that extending 802.1Q VLAN trunks into the ESX host is a best practice recommendation. It enables logical separation and scale of the various traffic types (management, IP storage, VM applications, etc) without being constrained by the number of physical NIC ports. We call this Virtual Switch Trunking (VST). As the name Read more...