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Category Archives for "Networking"

Tales from the Road

As I reflect on the myriad of conversations I had over the past few weeks, (most with network admins of leading enterprise and service provider customers), there is a consistent theme that has emerged and is worth sharing. Immediacy, agility, and granular control are terms, desired concepts really, that I hear over and over again and frankly seemed to hold more importance than any other topic.  A great example of this came at the end of the second day keynote panel at World Wide Technology’s (WWT) 8th annual Geek Day event. The last question an attendee asked the panel of leading technology CIO’s: If you had one dollar to spend on IT where would you spend it? Half of the panelists answered, “network agility”.  

I came to Embrane via a leading cloud service provider and I was looking to validate the idea that speed in IT was as, if not more, important on the networking side of the fence as it was on the server and storage side.  After three months in the chair, without question, I can confirm that the “network guys” continue to  keep up at cloud speed or to match the pace of Continue reading

OSPF external E1, E2, N1, N2…Who is the winner?

This lab focuses on route selection mechanism of OSPF external routes. The complexity of OSPF selection process is due to its inherent hierarchical structure. The following selection order should be familiar to you: intra-area (O) inter-area (IA) external routes OSPF provides more flexibility for external routes by manipulating the following criteria: Regular areas or NSSA […]

Show 143 – Anuta Networks Demonstrates nCloudX Controller – Sponsored

On March 26, 2013, the Packet Pushers held a sponsored webinar with Anuta Networks to introduce their nCloudX controller to our networking community. In the webinar, the Anuta team covers the following: A bit about their background, the problems they are going after, and how nCloudX addresseses these challenges. An explanation of the nCloudX architecture, […]

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Ethan Banks

Ethan Banks, CCIE #20655, has been managing networks for higher ed, government, financials and high tech since 1995. Ethan co-hosts the Packet Pushers Podcast, which has seen over 3M downloads and reaches over 10K listeners. With whatever time is left, Ethan writes for fun & profit, studies for certifications, and enjoys science fiction. @ecbanks

The post Show 143 – Anuta Networks Demonstrates nCloudX Controller – Sponsored appeared first on Packet Pushers Podcast and was written by Ethan Banks.

Programming 101 for Network Engineers – Why Bother?

Is this you perhaps? You’re the king of the network. You know it all inside out (your company and its processes too). You have every CLI mastered, you know the RPs you use in-depth, you’ve seen and used all the big management platforms, and you even know a fair bit about a few critical applications. […]

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Steven Iveson

Steven Iveson

Steven Iveson, the last of four children of the seventies, was born in London and has never been too far from a shooting, bombing or riot. He's now grateful to live in a small town in East Yorkshire in the north east of England with his wife Sam and their four children.

He's worked in the IT industry for over 15 years in a variety of roles, predominantly in data centre environments. Working with switches and routers pretty much from the start he now also has a thirst for application delivery, SDN, virtualisation and related products and technologies. He's published a number of F5 Networks related books and is a regular contributor at DevCentral.

The post Programming 101 for Network Engineers – Why Bother? appeared first on Packet Pushers Podcast and was written by Steven Iveson.

Upgrading F5 BIGIP HA Pair from v10 to v11 – Ethan’s Notes

I recently completed a challenging upgrade on a pair of production F5 3600s running 10.2.0, going to 11.2.1 running the LTM module. In hindsight, it shouldn’t have been a challenging upgrade, but that was due to the things I learned along the way. Lessons Learned License reactivation. The upgrade document doesn’t say much about this. […]

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Ethan Banks

Ethan Banks, CCIE #20655, has been managing networks for higher ed, government, financials and high tech since 1995. Ethan co-hosts the Packet Pushers Podcast, which has seen over 3M downloads and reaches over 10K listeners. With whatever time is left, Ethan writes for fun & profit, studies for certifications, and enjoys science fiction. @ecbanks

The post Upgrading F5 BIGIP HA Pair from v10 to v11 – Ethan’s Notes appeared first on Packet Pushers Podcast and was written by Ethan Banks.

The Importance of QoS in a Converged Infrastructure

I’ve done quite a few posts on Quality of Service, particularly on it’s basic concepts, as well as specific implementation details in a Data Center environment. Many of these concepts can be applied to really any use case, since QoS is QoS - just depends on how you classify traffic. But what do we gain by implementing QoS, especially in a context like Data Center, where a modern core layer is typically at least 10GbE and network congestion is rarely seen?

The Importance of QoS in a Converged Infrastructure

I’ve done quite a few posts on Quality of Service, particularly on it’s basic concepts, as well as specific implementation details in a Data Center environment. Many of these concepts can be applied to really any use case, since QoS is QoS - just depends on how you classify traffic. But what do we gain by implementing QoS, especially in a context like Data Center, where a modern core layer is typically at least 10GbE and network congestion is rarely seen?

Fabricpath Design, Think it Through! – part 1

Designing fabricpath? Deploying fabricpath? Read on! summary: FabricPath is a Layer-2 routing architecture (yes L2 routing), using ISIS to build shortest path trees to destination bridges...

[[ Summary content only, you can read everything now, just visit the site for full story ]]

DCI: The Need for Stretched Layer 2

In the previous article in this DCI series (Why is there a “Wrong Way” to Interconnect Datacenters?) I explained the business case for having multiple data centers and then closed by warning that extending Layer 2 domains was a path to disaster and undermined the resiliency of having two data centers.

Why then is stretching Layer 2 a) needed and b) a go-to maneuver for DCI.

Let's look at it from two points of view: technology and business.

No Experience is Irrelevant

So you’ve recently changed jobs, and you have a very extensive linux skillset. Your new job doesn’t include or require this skillset. Does that mean that experience will not serve you in this new role? Absolutely false. The most valuable thing these experiences give us is perspective. The ability to see things from a unique point of view makes you a unique and valuable addition to any team. This is a strong reason for my advocacy of the Unified Skillset.

No Experience is Irrelevant

So you’ve recently changed jobs, and you have a very extensive linux skillset. Your new job doesn’t include or require this skillset. Does that mean that experience will not serve you in this new role? Absolutely false. The most valuable thing these experiences give us is perspective. The ability to see things from a unique point of view makes you a unique and valuable addition to any team. This is a strong reason for my advocacy of the Unified Skillset.

ONS 2013 Brings Together The Entire SDN Ecosystem on April 15-17

Software Defined Networking (SDN) is revolutionizing the traditional networking approaches that have become too complex, closed, proprietary and/or difficult to program. The technology has the potential to enable network innovation by allowing network owners and operators more control of their infrastructure, thus allowing customization, optimization, and the reduction in overall capital and operational expenses. SDN […]

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Sponsored Blog Posts

The Packet Pushers work with our vendors to present a limited number of sponsored blog posts to our community. This is one. If you're a vendor and think you have some blog content you'd like to sponsor, contact us via [email protected].

The post ONS 2013 Brings Together The Entire SDN Ecosystem on April 15-17 appeared first on Packet Pushers Podcast and was written by Sponsored Blog Posts.

Wanted: OpenFlow Switch With ofp_action To Modify The Destination L3 Address

This article is meant to serve in part as an appendix to my previous post on PacketPushers.net. Therefore, please take a moment to read this introduction of Sakura Internet’s DDoS detection and mitigation app if you haven’t already. At Sakura, we are in the process of implementing source-and-destination-based DDoS packet filtering that should be effective and […]

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Tamihiro Yuzawa

Tamihiro Yuzawa

Tamihiro Yuzawa is a network engineer at Sakura Internet, one of Japan's major data center service providers. Before he joined Sakura in 2007, he spent five years at a busy CRM service provider. Both companies have allowed him to stay mostly within the intersection of these circles, and he is pretty much determined to remain in a serious relationship with both Dev and Ops.

The post Wanted: OpenFlow Switch With ofp_action To Modify The Destination L3 Address appeared first on Packet Pushers Podcast and was written by Tamihiro Yuzawa.

Come to ONS 2013 April 15-17 & Plug-in to SDN

Software Defined Networking (SDN) is the buzzword on the mind of every player in the networking and telecom ecosystem; promises to revolutionize networking as we know it and will affect service provider networks, cloud networks and enterprise networks. Open Networking Summit (ONS) 2013 is the premier conference for SDN and Open Flow and has established […]

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Sponsored Blog Posts

The Packet Pushers work with our vendors to present a limited number of sponsored blog posts to our community. This is one. If you're a vendor and think you have some blog content you'd like to sponsor, contact us via [email protected].

The post Come to ONS 2013 April 15-17 & Plug-in to SDN appeared first on Packet Pushers Podcast and was written by Sponsored Blog Posts.

Nuage Networks VSP – Delivers SDN in a Big Way – White Paper – Sponsored

Nuage Networks announces their Virtualised Services Platform and shows that SDN Networking is closer than you think. VSP is a multi-layer solution with a SDN app, controller & network agent with some technical chops. It's derived from Alcatel-Lucent's Service Routers and offers multi-data centre networking that's fully integrated with your MPLS WAN ? Find out more in the very first Packet Pushers Sponsored White Paper where we scratch it's technical under belly.

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Greg Ferro

Greg Ferro is a Network Engineer/Architect, mostly focussed on Data Centre, Security Infrastructure, and recently Virtualization. He has over 20 years in IT, in wide range of employers working as a freelance consultant including Finance, Service Providers and Online Companies. He is CCIE#6920 and has a few ideas about the world, but not enough to really count.

He is a host on the Packet Pushers Podcast, blogger at EtherealMind.com and on Twitter @etherealmind and Google Plus.

The post Nuage Networks VSP – Delivers SDN in a Big Way – White Paper – Sponsored appeared first on Packet Pushers Podcast and was written by Greg Ferro.

Translators wanted

Translation support will be available on next phpipam release, code is being redone and final checks ongoing. I have decided to go with gettext, it seems to be the most suitable for phpipam.

Translating is straight-forward, by providing translations for strings, for example:

#: functions/functions-mail.php:176
msgid “your domain username”
msgstr “translated text”

There are many tools available to help with translation, like poedit and others.

If anyone is interested in providing translation, please contact me on email. I have already received some requests in the past, I will try to dig up old emails…

brm