Migrating a cold VM into a foreign subnet

Moving a running VM into a foreign subnet is Mission Impossible due to stale ARP entries (anyone telling you otherwise is handwaving over ...

Live VM Mobility Network Requirements

Every time someone mentions how awesome new technologies solve live VM mobility across WAN networks, I start muttering unmentionables. Live ...

Dirty Details of Inter-DC VM- and IP Address Mobility

The upcoming Data Center Interconnect webinar ( register ) is sponsored by Enterasys Networks , so it’s obvious that I’ll also mention how ...

Hot and Cold VM Mobility

Another day, another interesting Expert Express engagement, another stretched layer-2 design solving the usual requirement: “We need inter-...

Long-Distance vMotion, Stretched HA Clusters and Business Needs

During a recent vMotion-over-VXLAN discussion Chris Saunders made a very good point: “ Folks should be asking a better question, like: Can ...

PVLAN, VXLAN and cloud application architectures

Aldrin Isaac made a great comment to my Could MPLS-over-IP replace VXLAN? article: As far as I understand, VXLAN, NVGRE and any tunneling ...

Virtualized Squashed Complexity Sausage

Straight from RFC 6670 (section 3.4) : [...] as is usually the case with communications technologies, simplification in one element of the s...

Long-Distance Workload Mobility in Perspective

In a recent blog post, Chuck Hollis described how some of EMC customers use long-distance workload mobility . Not surprisingly, he focused o...

Video: Networking requirements for VM mobility

You’re probably sick and tired of me writing and talking about networking requirements for VM mobility ( large VLAN segments that some pe...