Peter Welcher

I presented a CMUG session on Network Virtualization in the Data Center today. Thanks to all those who turned out!  The presentation consisted of a mix of my "whiteboard" sketches and Cisco slides (used with permission). I tried to put things together to tell a story of what various virtual…

For a change of pace, this blog poses a thought exercise (teaser?), a small item I ran into while considering whether or not to use a vPC to connect a [...]

If you have slow applications, your DNS may be a contributing factor. This is a networking topic in that the network will of course get blamed. I ran across DNS and [...]

VXLAN, or Virtual Extensible LAN, is a recent proposed standard technology from VMware and Cisco. It extends the concept of a VLAN in a manner that scales well for multi-tenant [...]

I’ve been blogging about Disaster Recovery, most recently about new techniques that might be used for BC/DR (Business Continuity / Disaster Recovery.  Prior blogs on the topic: The New Disaster Recovery [...]

What is the future of Disaster Recovery? That’s the obvious question after my blog on https://netcraftsmen.com/blogs/entry/improving-disaster-recovery.html. To recapitulate, that blog concluded that by doing datacenter basics well, we can help [...]

OTV Best Practices have come to the forefront lately. Various sites are starting to implement OTV. The ones I’m aware of to date are aware they are taking a minor [...]

I’d like to share some thoughts about Disaster Recover / Continuity of Operations (DR / COOP). This is triggered by the storm-related outages we just had in the MD/VA area, [...]

Cisco announced the UCS E-Series in January. I haven’t been paying close attention to that particular market niche, ran across something about it at Networkers, and checked it out. This [...]

I’d like to share some excitement about the Cisco vPath 2.0 technology, which seems to be key to simpler delivery of  automated (and non-automated) virtual services in the datacenter. There [...]

In the last blog I posted, I wrote about the Cisco CSR and its usefulness in the cloud — and deferred including some thoughts about Cloud and Latency, since that’s [...]

At CiscoLive 2012, Cisco announced the Cloud Services Router (CSR), aka the Cloud CSR 1000v. Personally, I think I should just go ahead and confuse everyone by calling it the vASR. Or [...]