Ethan Banks and Greg Ferro are joined on this week’s Packet Pushers podcast by Teren Bryson, Paul Stewart, and Michele Chubirka. This is a community show, meaning it’s just a bunch of engineers chatting about the industry and our experiences. No vendors looking over our shoulders at all. Here’s what we yammer on about. Topics […]
The post Show 165 – Running Code Is What Defines The Rules appeared first on Packet Pushers Podcast and was written by Ethan Banks.
The purpose of a load balancer is to distribute client connections to multiple servers to increase load capacity and provide high availability. One common requirement of load balanced applications, since most application servers maintain session information on the local box, is that a client must stay locked to a single server for the duration of […]
The post F5 LTM Encrypted Cookie Insert Persistence appeared first on Packet Pushers Podcast and was written by Eric Flores.
Following on from my previous “triple-F” article (Five Functional Facts about FabricPath), I thought I would apply the same concept to the topic of Overlay Transport Virtualization (OTV). This post will not describe much of the foundational concepts of OTV, but will dive right into how it actually functions in practice. A reasonable introduction to OTV can be found in my series on Data Center Interconnects.
So without any more preamble, here are five functional facts about OTV.
This post represents the solution and explanation for quiz-16. Advertising inactive BGP routes can, sometimes, depend on other conditions. This article presents some scenarios with inactive BGP prefixes, suppress-inactive
and RIB-NH Matches.
I've been selling physical copies of my 36x24" IOS Interior Routing Protocols poster for a while now. Unfortunately, Google Checkout is going the way of Google Reader next month and soon I will no longer be able to accept payments. Thus, October 31st will be the last day to order copies of the poster.
The PDF will of course remain freely available for download if you'd like to print the print poster yourself after the deadline.
EMC Education Services Safari | Amazon I’m a routing geek. Not a storage, compute, SONET, web design, and mobile phone geek — a routing geek. But even routing geeks need to know something about the stuff that attaches to the network right? In the spirit of learning something new, I recently picked up (and […]
Now that I’ve finished learning about SDN, and then studied for and passed my latest Cisco certification (CCNA Security, keeping that vendor certification path open!), I’ve gotten into the groove of studying at night (and I as I love IT, and specifically networking, it’s kinda become my hobby… I know, lame, right?) In any case, […]
The post Back to the Basics… appeared first on Packet Pushers Podcast and was written by Will Dennis.
Introduction Note: This assumes you’re on a linux machine, but it should work on any box where you can install and run Bash, for example windows with Cygwin. (You’ll also need the date program from GNU Core Utilities too, but that’s installed by default on any normal Linux or Cygwin system.) Note: For simplicity the […]
The post Bash and Net-SNMP: a low budget, high frequency SNMP poller appeared first on Packet Pushers Podcast and was written by Nik Weidenbacher.
When using an F5 load balancer there are 2 predominant ways to setup the network topology. While there are many different names for these methods, in this article I will call them “load balancer on a stick” and in-line. Although the article is about the in-line method, we will quickly review both methods for comparison. […]
The post Stateless Routing Through an in-line F5 LTM appeared first on Packet Pushers Podcast and was written by Eric Flores.
Swapped from AT&T to T-Mobile in order to take advantage of their 4G/LTE IPv6 network. Since I dogfood IPv6 every chance I get, and the cost to swap saved me a whopping $0.50, I moved forward with it. I find that if I set their EPC.TMOBILE.COM APN to IPv4/IPv6, I don’t really see much in the way of dual-stack actually working on the phone. So I set it from the default IPv4 to just IPv6, and that got it working with native IPv6 and using CLAT+NAT64/DNS64 for IPv4 sites. Screenshot from my Galaxy Nexus running 4.3: