In the second section of VMware NSX Architecture webinar I explained the need for overlay virtual networks and what their benefits are as ...
Showing posts with label Data Center. Show all posts
Showing posts with label Data Center. Show all posts
Typical Enterprise Application Deployment Process is Broken
Months ago VMware started promoting NSX with a catchy “fact” – you can deploy a new VM or virtual disk in minutes, but it usually takes days...
Cisco Nexus 9000 and ACI: Promising P+V Architecture
Last week’s Nexus 9000 and Application Centric Architecture launch triggered an avalanche of opinions. Some bloggers focused on the fact tha...
Finally: Juniper Supports a Leaf-and-Spine Virtual Chassis
The recent Juniper product launch included numerous components, among them: a new series of data center switches (including a badly-needed ...
VMware NSX: Defining the Problem
Every good data center presentation starts with redefining The Problem and my VMware NSX Architecture webinar was no exception – the first...
Flow Table Explosion with OpenFlow 1.0 (And Why We Need OpenFlow 1.3)
The number of flows in hardware switches (dictated by the underlying TCAM size) is one of the major roadblocks in a large-scale OpenFlow dep...
IPv6-Only Data Centers: Deployment Guidelines
During the final part of the IPv6-only data centers webinar Tore Anderson described his deployment guidelines and answered a few more ques...
Estimating the Number of TCP Sessions per Host
Another day, another stateful debate, this time centered on the number of flows per hypervisor. Previously I guestimated 2.500 connections-p...
ATAoE Is Alive and Well
A while ago I wrote about ATAoE and why I think a layer-2-only TFTP-like protocol shouldn’t be used these days . As always, the answer to t...
VMware NSX Architecture Videos Published
The edited videos from VMware NSX Architecture webinar are published on my demo content web site and on YouTube . Enjoy! Watch the videos
Exception Routing with BGP: SDN Done Right
One of the holy grails of data center SDN evangelists is controller-driven traffic engineering (throwing more leaf-and-spine bandwidth at th...
Overlay Virtual Networks 101
My keynote speech @ PLNOG11 conference was focused on (surprise, surprise) overlay virtual networks and described the usual motley crew: T...
The Intricacies of Optimal Layer-3 Forwarding
I must have confused a few readers with my blog posts describing Arista’s VARP and Enterasys’ Fabric Routing – I got plenty of questions a...
IPv6-Only Data Center: Q&A Time
Not surprisingly, the unorthodox ideas of Tore Anderson generated plenty of questions, so he spent ~20 minutes answering them . Watch the v...
Configure physical firewalls based on VM groups? Sure, use DSE from Plexxi
Plexxi has an interesting problem. They have a shiny new solution that requires unorthodox approaches to network forwarding and allows the...
SIIT – The Magic Behind IPv6-only Data Center
Remember Tore Anderson’s IPv6-only data center design he described in last June’s webinar ? Wondered how he got it done? The secret sauce h...
Layer-2 Extension (OTV) Use Cases
I was listening to the fantastic OTV Deep Dive PQ Packet Pushers podcast while biking around the wonderful Slovenian forests. They started ...
Plexxi PSI: MAU at Gigabit Speed
Regardless of the advantages of photonic switching ( David Husak claims it’s 20.000 times more effective than electronic switching ), the pr...
Test virtual appliance throughput with Spirent Avalanche NEXT
During the Networking Tech Field Day 6 Spirent showed us Avalanche NEXT – another great testing tool that generates up to 10Gbps of perfect...
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 ...