Blog Posts in 2013

December 2013

That’s it for 2013 (20 Dec 2013)
Webinars in 2013 (19 Dec 2013)
Does It Make Sense to Build New Clouds with Overlay Networks? (18 Dec 2013)
Overlay Virtual Networking Solutions Overview (17 Dec 2013)
Focus on Your Business, Not Fancy Technologies (16 Dec 2013)
IGMP and PIM in Multicast VXLAN Transport Networks (13 Dec 2013)
Control Plane in OpenFlow Networks (11 Dec 2013)
Internet Traffic Gets MPLS Labels When You Deploy MPLS/VPN (10 Dec 2013)
Packet Forwarding in Amazon VPC (09 Dec 2013)
Still Waiting for the Stupid Network (07 Dec 2013)
Layer-2 Gateways in VMware NSX (06 Dec 2013)
Hyper-V Network Virtualization Packet Forwarding Improvements in Windows Server 2012 R2 (05 Dec 2013)
OMG, Who Will Manage All Those Virtual Firewalls? (04 Dec 2013)
BGP Routing in DMVPN Networks (03 Dec 2013)
Virtual Packet Forwarding in Hyper-V Network Virtualization (02 Dec 2013)

November 2013

We Had SDN in 1993 … and Didn’t Know It (28 Nov 2013)
Terastream Part 2: Lightweight 4over6 and Network Function Virtualization (NFV) (27 Nov 2013)
Layer-3 Forwarding with VMware NSX Edge Services Router (26 Nov 2013)
Don’t Use ULA Addresses in Service Provider Core (25 Nov 2013)
VMware NSX: the Need for Overlay Virtual Networks (22 Nov 2013)
Programming the Network – A Few Guidelines (21 Nov 2013)
Typical Enterprise Application Deployment Process is Broken (20 Nov 2013)
Layer-2 and Layer-3 Switching in VMware NSX (19 Nov 2013)
Deutsche Telekom TeraStream: Designed for Simplicity (18 Nov 2013)
OpenFlow and SDN: Two Years after ONF Launch (16 Nov 2013)
Technical Debt – and How We Can Fix It (15 Nov 2013)
Make Every Application an Independent Tenant (14 Nov 2013)
Two and a Half Years after OpenFlow Debut, the Media Remains Clueless (11 Nov 2013)
It's just a quick change, really ... (09 Nov 2013)
One-Tier Data Centers? Now Bigger Than Ever with Arista 7300 Switches (07 Nov 2013)
Use ThousandEyes to Implement IP SLA on Steroids (06 Nov 2013)
Finally: Juniper Supports a Leaf-and-Spine Virtual Chassis (05 Nov 2013)
Are Your Applications Cloud-Friendly? (04 Nov 2013)

October 2013

Overlay Virtual Networking Video (30 Oct 2013)
Create Network Models with CML’s AutoNetKit (29 Oct 2013)
IBGP Migrations Can Generate Forwarding Loops (28 Oct 2013)
Traceroute of the year (26 Oct 2013)
VMware NSX: Defining the Problem (25 Oct 2013)
Cisco Modeling Lab (VIRL) behind the scenes (24 Oct 2013)
Lego Data Center (23 Oct 2013)
Can You Find SQL Injection Vulnerabilities with Spirent Avalanche NEXT? (22 Oct 2013)
Flow Table Explosion With OpenFlow 1.0 (And Why We Need OpenFlow 1.3) (21 Oct 2013)
Network Troubleshooting Checklist (19 Oct 2013)
IPv6-Only Data Centers: Deployment Guidelines (18 Oct 2013)
Estimating the Number of TCP Sessions per Host (17 Oct 2013)
Why is IPsec so Complex? (16 Oct 2013)
Forwarding Models in OpenFlow Networks (15 Oct 2013)
ATAoE Is Alive and Well (14 Oct 2013)
VMware NSX Architecture Videos Published (11 Oct 2013)
How do you write a blog post a day? (10 Oct 2013)
Exception Routing with BGP: SDN Done Right (09 Oct 2013)
Can BGP Route Reflectors Really Generate Forwarding Loops? (08 Oct 2013)
What Exactly Is The Control Plane? (07 Oct 2013)
Overlay Virtual Networks 101 (04 Oct 2013)
TTL in Overlay Virtual Networks (03 Oct 2013)
OpenStack Quantum (Neutron) Plug-In: There Can Only Be One (02 Oct 2013)
The Intricacies of Optimal Layer-3 Forwarding (01 Oct 2013)

September 2013

To ULA or Not to ULA, That’s the Question (30 Sep 2013)
IPv6-Only Data Center: Q&A Time (27 Sep 2013)
OpenFlow and Fermi Estimates (26 Sep 2013)
Know Thy Boundaries (25 Sep 2013)
Configure physical firewalls based on VM groups? Sure, use DSE from Plexxi (24 Sep 2013)
Net::Beer @ PLNOG 11 (23 Sep 2013)
Do You REALLY Want to Program Your Network? (23 Sep 2013)
SIIT – The Magic Behind IPv6-only Data Center (20 Sep 2013)
Layer-2 Extension (OTV) Use Cases (19 Sep 2013)
Plexxi PSI: MAU at Gigabit Speed (18 Sep 2013)
Monitor Public SaaS Providers with ThousandEyes (17 Sep 2013)
Test Virtual Appliance Throughput with Spirent Avalanche NEXT (16 Sep 2013)
Dizzy from the Kool-Aid (15 Sep 2013)
Migrating a cold VM into a foreign subnet (13 Sep 2013)
Overlay Networks and QoS FUD (12 Sep 2013)
How Much Data Center Bandwidth Do You Really Need? (11 Sep 2013)
Why Is Network Virtualization So Hard? (10 Sep 2013)
OpenFlow Fabric Controllers Are Light-years Away from Wireless Ones (09 Sep 2013)
DF bit explained (07 Sep 2013)
Layer-2 DCI with Enterasys Switches (06 Sep 2013)
Sooner or Later, Someone Will Pay for the Complexity of the Kludges You Use (05 Sep 2013)
Extending Layer-2 Connection into a Cloud (04 Sep 2013)
The Plexxi Challenge (or: Don’t Blame the Tools) (03 Sep 2013)
Combining DMVPN with Existing MPLS/VPN Network (02 Sep 2013)

August 2013

Enterasys Host Routing – Optimal L3 Forwarding with VM Mobility (30 Aug 2013)
Virtual Appliance Routing – Network Engineer’s Survival Guide (29 Aug 2013)
Are Overlay Networking Tunnels a Scalability Nightmare? (28 Aug 2013)
Routing Protocols on NSX Edge Services Router (27 Aug 2013)
What is VMware NSX? (26 Aug 2013)
Design Options in Dual-Stack Data Centers (23 Aug 2013)
50 Shades of Statefulness (22 Aug 2013)
How big is a big private cloud? (21 Aug 2013)
Networking Enhancements in Windows Server 2012 R2 (20 Aug 2013)
Nicira NVP Control Plane (19 Aug 2013)
Skip the transitions with IPv6-only data center deployment (18 Aug 2013)
RSVP over DMVPN (17 Aug 2013)
We should teach the network how to serve the applications. Really? (15 Aug 2013)
Control Plane Protocols in Overlay Virtual Networks (14 Aug 2013)
Management, Control, and Data Planes in Network Devices and Systems (13 Aug 2013)
What’s Coming in Hyper-V Network Virtualization (Windows Server 2012 R2) (12 Aug 2013)
All it takes is a single misdirected STP packet ... (10 Aug 2013)
Optimal Layer-3 Forwarding with Active/Active VRRP (Enterasys Fabric Routing) (09 Aug 2013)
A Day in a Life of an Overlaid Virtual Packet (07 Aug 2013)
Can I Use Shared (RFC 6598) IPv4 Address Space Within My Network? (06 Aug 2013)
Temper Your MacGyver Streak (05 Aug 2013)
Dual-Stack Security Exposures (02 Aug 2013)

July 2013

More Private AS Numbers (30 Jul 2013)
Cloud-as-an-Appliance Design (29 Jul 2013)
Unreadable IPv6 Addresses Might Be Good For Us in the Long Run (25 Jul 2013)
Where’s the Revolutionary Networking Innovation? (23 Jul 2013)
Unicast-Only VXLAN Finally Shipping (22 Jul 2013)
Downloadable Recording of Enterasys Data Center Interconnect Solutions Webinar (19 Jul 2013)
First-Hop IPv6 Security Features in Cisco IOS (18 Jul 2013)
Doodling on a Napkin (16 Jul 2013)
Smart Fabrics Versus Overlay Virtual Networks (15 Jul 2013)
ProgrammableFlow Typical Use Cases (12 Jul 2013)
The Tools That I Use (Drawings) (11 Jul 2013)
Cloudbursting, the Wally Way (09 Jul 2013)
iSCSI with PFC? (08 Jul 2013)
IPv6 Address Assignment and Tracking (05 Jul 2013)
Fallacies of GUI (03 Jul 2013)
Summer seems to have arrived (01 Jul 2013)

June 2013

Data Center Fabrics Built with Plexxi Switches (28 Jun 2013)
Real-Life SDN/OpenFlow Applications (26 Jun 2013)
The Tools That I Use (Webinars) (25 Jun 2013)
CLI and API Myths (24 Jun 2013)
EIBGP Load Balancing (21 Jun 2013)
MPLS/VPN Carrier’s Carrier – Myth or Reality? (20 Jun 2013)
Arista EOS Virtual ARP (VARP) Behind the Scenes (19 Jun 2013)
Implementing Control-Plane Protocols with OpenFlow (18 Jun 2013)
Network Virtualization and Spaghetti Wall (17 Jun 2013)
Will SPDY Solve Web Application Performance Issues? (14 Jun 2013)
The Difference between Access Lists and Prefix Lists (13 Jun 2013)
Response: SDN’s Casualties (12 Jun 2013)
Dynamic Routing with Virtual Appliances (10 Jun 2013)
Long Live Just Good Enough! (09 Jun 2013)
IPv6 uRPF and Neighbor Discovery Throttling (07 Jun 2013)
Network Virtualization at ToR switches? Makes as much sense as IP-over-APPN (05 Jun 2013)
VRRP, Anycasts, Fabrics and Optimal Forwarding (04 Jun 2013)
Scott Shenker on OpenFlow and SDN (03 Jun 2013)
What is Network Virtualization (02 Jun 2013)

May 2013

Simplify Your Disaster Recovery with Virtual Appliances (31 May 2013)
BGP Best External Explained (30 May 2013)
Optimal L3 Forwarding with VARP and Active/Active VRRP (29 May 2013)
Could IXPs Use OpenFlow to Scale? (28 May 2013)
Hyper-V 3.0 Extensible Virtual Switch (24 May 2013)
OpenFlow and SDN – Do You Want to Build Your Own Racing Car? (23 May 2013)
Celebrating 40 years of Ethernet ... at south pole (22 May 2013)
The Dangers of Ignoring IPv6 (22 May 2013)
Multi-Vendor OpenFlow – Myth or Reality? (21 May 2013)
Troopers 13 – a must-visit security conference (20 May 2013)
Expert Beginners (18 May 2013)
How Networking Is Changing – Interview with Stu Miniman (17 May 2013)
Tail-f Network Control System – the First Impressions (16 May 2013)
Data Has Mass and Gravity (15 May 2013)
Are stateless ACLs good enough? (13 May 2013)
Update: TRILL on HP Data Center Switches (11 May 2013)
Cisco IOS TCP MSS handling on IPv6 (10 May 2013)
Dell Fabric Manager Explained (10 May 2013)
Dedicated Hardware in Network Services Appliances? Meh! (09 May 2013)
Server Guy’s Guide to Virtual Networks (08 May 2013)
Plexxi’s Dan Backman Presenting in the Data Center Fabrics Update Webinar (07 May 2013)
Interop Product Launch Craze (06 May 2013)
TCP and HTTP Improvements (03 May 2013)
Attending Interop Las Vegas? Drop by! (02 May 2013)

April 2013

Open vSwitch Under the Hood (30 Apr 2013)
They want networking to be utility? Let’s do it! (29 Apr 2013)
Virtual Firewall presentation from Troopers 13 (26 Apr 2013)
Why are 3G networks so slow? (25 Apr 2013)
Resiliency of VM NIC firewalls (24 Apr 2013)
Virtual Appliance Performance Is Becoming a Non-Issue (23 Apr 2013)
NETCONF+YANG+NETMOD versus SMI-S (22 Apr 2013)
Get my RSS feed into your Inbox (21 Apr 2013)
TCP and HTTP deep(er) dive Q&A (20 Apr 2013)
TCP and HTTP deep(er) dive (19 Apr 2013)
VXLAN scalability challenges (18 Apr 2013)
VM BPDU spoofing attack works quite nicely in HA clusters (17 Apr 2013)
This Is What Makes Networking So Complex (16 Apr 2013)
Compromised Security Zone = Game Over (Or Not?) (15 Apr 2013)
Kickstart free CCNA and CCNP videos! (13 Apr 2013)
464XLAT Explained (12 Apr 2013)
Load Balancing Across Multiple MPLS/VPN Providers (11 Apr 2013)
Are you ready to change your security paradigm? (09 Apr 2013)
The First Glimpse of Open Daylight (08 Apr 2013)
Blame the firewall! (07 Apr 2013)
Why TCP and HTTP affect web application performance (05 Apr 2013)
The Many Paths to SDN (04 Apr 2013)
The Impact of Changed NHRP Behavior in DMVPN Networks (03 Apr 2013)
VLANs are the wrong abstraction for virtual networking (02 Apr 2013)

March 2013

IPv6 Source Address Validation Improvement (29 Mar 2013)
Where Is my VLAN Provisioning Application? (28 Mar 2013)
What Did You Do to Get Rid of Manual VLAN Provisioning? (27 Mar 2013)
The Spectrum of Firewall Statefulness (26 Mar 2013)
Control-plane policing in OpenFlow networks (25 Mar 2013)
ProgrammableFlow Configuration Interfaces (22 Mar 2013)
Does dedicated iSCSI infrastructure make sense? (21 Mar 2013)
Happy Eyeballs – Happiness Defined by Your Perspective (18 Mar 2013)
Inter-Process OSPF Route Selection Rules (14 Mar 2013)
Start Reading V6OPS Documents (13 Mar 2013)
Controller-Based Packet Forwarding in OpenFlow Networks (12 Mar 2013)
The Best of MENOG 12 (11 Mar 2013)
NEC ProgrammableFlow Scalability Features (08 Mar 2013)
Keep your applications running on IPv6 transition (07 Mar 2013)
Predicting the IPv6 BGP Table Size (05 Mar 2013)
All You Ever Wanted to Know About IPv6-over-IPv4 Tunnels (04 Mar 2013)
Quality of Service in ProgrammableFlow Networks (01 Mar 2013)

February 2013

Evolution of IP Model (28 Feb 2013)
Upcoming Events and Presentations (27 Feb 2013)
Example: Multi-Stage Clos Fabrics (26 Feb 2013)
Hot and Cold VM Mobility (25 Feb 2013)
Virtual Tenant Networks with NEC ProgrammableFlow (22 Feb 2013)
Daylight – Internet Explorer or Linux of the SDN World? (21 Feb 2013)
WAN Routing in Data Centers with Layer-2 DCI (20 Feb 2013)
Process, Fast and CEF Switching and Packet Punting (19 Feb 2013)
NEC ProgrammableFlow Principles - Q & A (18 Feb 2013)
NEC ProgrammableFlow Principles of Operation (15 Feb 2013)
The Saga of Oversubscriptions (14 Feb 2013)
Internet-in-a-VRF and LFIB Explosion (13 Feb 2013)
VXLAN Gateway Design Guidelines (12 Feb 2013)
Debugging Microsoft Network Load Balancing ... (11 Feb 2013)
ProgrammableFlow Webinar – Introduction (08 Feb 2013)
Intra-Spine Links in Leaf-and-Spine Fabrics (07 Feb 2013)
Nexus 6000 and 40GE – why do I care? (06 Feb 2013)
SDN, Windows and Fruity Alternatives (05 Feb 2013)
IPv6 addressing in SMB environment (04 Feb 2013)
IPv6 Secure Neighbor Discovery (SEND) (01 Feb 2013)

January 2013

BGP Security draft adopted as IETF workgroup document (31 Jan 2013)
Long-Distance vMotion, Stretched HA Clusters and Business Needs (30 Jan 2013)
Free webinar: TCP, HTTP and SPDY (29 Jan 2013)
MTU issues (and TCP MSS clamping) in residential IPv6 deployments (28 Jan 2013)
NEC Launched a Virtual OpenFlow Switch – Does It Matter? (24 Jan 2013)
Juniper MX Routers – all you ever wanted to know (23 Jan 2013)
TCP MSS Clamping – What Is It and Why Do We Need It? (22 Jan 2013)
DHCPv6-based address allocation on PPPoE links (21 Jan 2013)
Could you run an MPLS-TE-only MPLS/VPN network without LDP? (17 Jan 2013)
How would you like to configure Policy-Based Routing (PBR) (16 Jan 2013)
Redundant Data Center Internet Connectivity – High-Level Design (15 Jan 2013)
Redundant Data Center Internet Connectivity – Problem Overview (14 Jan 2013)
When discussing stretched clusters ... (12 Jan 2013)
Edge Protocol Independence: Another Benefit of Edge-and-Core Layering (10 Jan 2013)
Extending MPLS/VPN to Customer Sites (09 Jan 2013)
Link Aggregation with Stackable Data Center Top-of-Rack Switches (08 Jan 2013)
The Magical U-curve and technology adoption (07 Jan 2013)
Edge and Core OpenFlow (and why MPLS is not NAT) (03 Jan 2013)