Access "vSphere VLAN: Understanding 802.1Q VLAN tagging"
This article is part of the June 2011 Vol. 2, No. 3 issue of How networks are adapting to virtualization
Configuring vSphere VLANs can be more complicated than establishing VLANs in a typical physical network and therefore requires a different approach – 802.1Q VLAN tagging. In a physical network, servers all have their own physical Network Interface Cards (NICs) that are connected to a physical switch port. As a result, VLANs are usually controlled by setting the VLAN ID on the physical switch port and then setting the server's IP address to correspond to that NIC's VLAN. But in a virtual environment, dedicating a physical NIC (pNIC) to each VM that resides on the host doesn't work. In fact, a host physical NIC may service many VMs, which may all need to be connected to different VLANs. Consequently, the old method of setting a VLAN ID on the physical switch port doesn't work. That's where 802.1Q VLAN tagging comes in. VLANs primer VLANs for networking professionals: In this guide learn everything from basic VLAN configuration to setting up VLANs in virtual environments. Networking for virtualization: The basics Before we explain what 802.1Q VLAN tagging is,... Access >>>
Premium Content for Free.
Desktop virtualization network challenges: A primer
Virtual desktop infrastructure is seeing speedy uptake, but desktop virtualization network challenges mean investing in load balancing, traffic prioritization and even more bandwidth to support real-time applications to the desktop.
Network diagnostics that see through virtualization
by SearchNetworking Staff
Running network diagnostics for virtualization requires a new set of strategies that involve virtual switches, virtual network probes and rerouting traffic for analysis.
- Desktop virtualization network challenges: A primer
vSphere VLAN: Understanding 802.1Q VLAN tagging
by Eric Siebert
vSphere VLANs have requirements different from those of VLANs in physical environments because VMs are fluid and can't be assigned to one physical NIC. So 802.1Q VLAN tagging offers a new approach to configuring and managing VLANs in vSphere.
- vSphere VLAN: Understanding 802.1Q VLAN tagging by Eric Siebert
Virtualization demands a full IT infrastructure audit
by Michael J. Martin, Fast Packet Blogger
In order to implement virtualization, enterprises must go beyond old-school network documentation for a full IT infrastructure audit that shows resources across silos.
Why are network engineers so bitter about managing virtualization?
by Rivka Gewirtz Little
One virtualization architect explains the miscommunications between systems and network engineers and how his teams worked together toward managing virtualization more effectively.
- Virtualization demands a full IT infrastructure audit by Michael J. Martin, Fast Packet Blogger
More Premium Content Accessible For Free
As users carry more devices, wireless network design must evolve
The average person carries three mobile devices, according to an informal poll conducted last year by Sophos Labs. While Kindles and Fitbits probably...
Mobile devices are gobbling up your WLAN bandwidth: Here’s how to cope
More -- and more complex -- mobile devices are jumping on your enterprise network, gobbling up bandwidth from the WLAN infrastructure. This technical...
Finally! APM vendors design tools with networking pros in mind
Whenever users complain about an application being slow, the network is always first to be blamed. And yet network engineers often have limited ...