BGP RR Design – Part 2
This is a continuation from Part 1 9. ACME VPN RR’s Design: So the current total number of PE’s dedicated for VPN functionality is around 400 (2 PE’s in each POP x 200). A full iBGP mesh between 400 PE’s comes around 79,800 sessions ((400×399) /2). By introducing two VPN RR’s each PE will have only two iBGP sessions […]
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The post BGP RR Design – Part 2 appeared first on Packet Pushers Podcast and was written by Diptanshu Singh.
BGP RR Design – Part 1
1. Introduction In this post we will be looking at large scale RR design by using a fictional ISP ACME as a reference. As usual, I am assuming that the reader has familiarity with BGP and basic RR concepts. 2. Setting the Stage ACME is a communications company providing communications and data services to residential, business, governmental and wholesale customers. […]
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The post BGP RR Design – Part 1 appeared first on Packet Pushers Podcast and was written by Diptanshu Singh.
Network Break 31
Over-opinionated analysis on data network and IT Infrastructure. And virtual doughnuts.
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The post Network Break 31 appeared first on Packet Pushers Podcast and was written by Greg Ferro.
Show 227 – OpenStack Neutron Overview with Kyle Mestery
Today's Packet Pushers adventure is piloted by hosts Ethan Banks and Greg Ferro. They are joined by guide Kyle Mestery on a tour of OpenStack Neutron.
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The post Show 227 – OpenStack Neutron Overview with Kyle Mestery appeared first on Packet Pushers Podcast and was written by Ethan Banks.
HTIRW: Reality at the Mic (1)
We’ve talked a little about the structure of the IETF, and the process a draft follows when moving from submission to draft to RFC… The perennial question is, though — why does it take so long? Or, perhaps — why is the IETF so broken? Let me begin here: the IETF is a human organization. […]
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The post HTIRW: Reality at the Mic (1) appeared first on Packet Pushers Podcast and was written by Russ White.
Network Break 30
Over-opinionated analysis on data network and IT Infrastructure. And virtual doughnuts.
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The post Network Break 30 appeared first on Packet Pushers Podcast and was written by Greg Ferro.
How we upgraded the entire Network Infrastructure in 2 weeks
I work as a Network Engineer at a Research Center in Silicon Valley. Being the only ‘network guy’ here, I’m responsible for the management of all networking devices like Routers, Switches, Firewalls, Radius Servers, VPNs, Wireless controllers, Linux servers, etc, etc… For a couple years, we have been trying to replace our ageing and end-of-life […]
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The post How we upgraded the entire Network Infrastructure in 2 weeks appeared first on Packet Pushers Podcast and was written by Kunal Vaidya.
Using Python Context Managers for SSH connections
In this post, I will cover basic usage of Python’s context managers to connect to a network device using SSH. I will use them to abstract the connection establishment and teardown logic that is needed when making an SSH connection. Note: This post will not cover context manager details, as great explanations can already be found online. Instead, this article […]
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The post Using Python Context Managers for SSH connections appeared first on Packet Pushers Podcast and was written by Pablo Lucena.
Show 226 – What Is A Load Balancer, Anyway?
Eric Flores joins Greg Ferro and Ethan Banks for a discussion about the fundamentals of load balancers, aka "Application Delivery Controllers." What is a load balancer (ADC)? What's it good for? How does it work?
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The post Show 226 – What Is A Load Balancer, Anyway? appeared first on Packet Pushers Podcast and was written by Ethan Banks.
Network Break 29
Over-opinionated analysis on data network and IT Infrastructure.
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The post Network Break 29 appeared first on Packet Pushers Podcast and was written by Greg Ferro.
Show 225 – SolarWinds on The Cost of Monitoring + NPM 11.5 – Sponsored
SolarWinds' Head Geek Leon Adato joins Packet Pushers co-hosts Ethan Banks and Greg Ferro for a discussion about the cost of (not) doing proper network monitoring. We also get an update on the new features found in the NPM 11.5 release including wireless heat maps, web-based alerting, auto-discovery of application types for DPI, automatic dependency mapping, integrated capacity planning, and duplex mismatch detection.
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The post Show 225 – SolarWinds on The Cost of Monitoring + NPM 11.5 – Sponsored appeared first on Packet Pushers Podcast and was written by Ethan Banks.
Python and Jinja2 Tutorial
“How should I get started with Network Automation?” I am often asked this question by network engineers looking to build new programming skills. If you are brand new to writing Python scripts and are looking for an easy on-ramp to the network automation superhighway, I’d suggest starting with Jinja2 – the de-facto python template engine. Template building […]
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The post Python and Jinja2 Tutorial appeared first on Packet Pushers Podcast and was written by Jeremy Schulman.
Network Break 28
Coffee, doughnuts and networking. A perfect combination.
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The post Network Break 28 appeared first on Packet Pushers Podcast and was written by Greg Ferro.
CCDE and CCAr Certificates – FAQ
CCDE is the de facto expert level, vendor neutral, and infrastructure network design certification in the industry. I have been helping to CCDE community for a while through my packet pushers articles and podcasts. I started couple months before to write about network design and CCDE related articles on my blog http://orhanergun.net as well. […]
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The post CCDE and CCAr Certificates – FAQ appeared first on Packet Pushers Podcast and was written by Orhan Ergun.
Show 224 – HTTP2. Its The Biggest (Network) Thing Happening on the Internet Today – Repost
HTTP/2 is now submitted to the RFC Editor and will bring major changes to networking. Efficient design means smaller firewalls, less bandwidth and faster response times for users. And the default to encryption means that transparent caches, proxies, IDS/IPS and other network security systems will be seriously impacted.
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The post Show 224 – HTTP2. Its The Biggest (Network) Thing Happening on the Internet Today – Repost appeared first on Packet Pushers Podcast and was written by Greg Ferro.
Show 224 – HTTP2. Its The Biggest (Network) Thing Happening on the Internet Today
HTTP/2 is now submitted to the RFC Editor and will bring major changes to networking. Efficient design means smaller firewalls, less bandwidth and faster response times for users. And the default to encryption means that transparent caches, proxies, IDS/IPS and other network security systems will be seriously impacted.
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The post Show 224 – HTTP2. Its The Biggest (Network) Thing Happening on the Internet Today appeared first on Packet Pushers Podcast and was written by Greg Ferro.
IP FRR and Micro-loops Part 2
This is a continuation from Part 1 Remote LFA At this point we already know that simple LFA doesn’t always provide full coverage and its very topology dependent. Reason is simple i.e.in many cases backup next hop best path goes through the router calculating the backup next hop. This problem can be solved if we […]
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The post IP FRR and Micro-loops Part 2 appeared first on Packet Pushers Podcast and was written by Diptanshu Singh.
IP FRR and Micro-loops Part 1
Introduction In this post we will take a look at IP FRR and Micro-loops. If the reader already doesn’t have some kind of basic familiarity with IP FRR and Micro-loops, then I would highly recommend the reader go through below post series by Russ as he introduces various concepts in a very clear way. This post […]
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The post IP FRR and Micro-loops Part 1 appeared first on Packet Pushers Podcast and was written by Diptanshu Singh.
NAT, Security, and Repeating Myself
In a former post I pointed out that we need to think of obscurity as a tool in network security — that we shouldn’t try to apply rules that are perfectly logical in terms of algorithms to networks as a system. While I’m not normally one to repeat myself, this topic needs a little more […]
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The post NAT, Security, and Repeating Myself appeared first on Packet Pushers Podcast and was written by Russ White.
Community Show – Greg’s & Ethan’s Briefing Review for February 2015
In this show, we discuss recent briefings we received from CloudGenix, Light Cyber, VMware, and Meru. We also go on a little rabbit trail about Brocade, because they came to mind. You know how we are.
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The post Community Show – Greg’s & Ethan’s Briefing Review for February 2015 appeared first on Packet Pushers Podcast and was written by Ethan Banks.