Episode 28 – For the Love of NAT

When it comes to NAT, network engineers love it, they hate it, or the love to hate it. In this episode, Tom Hollingsworth and Nick Buraglio join us to talk about NAT, why it exists, and its continued role in networking.

We would like to thank Core BTS for sponsoring this episode of Network Collective. Core BTS focuses on partnering with your company to deliver technical solutions that enhance and drive your business. If you’re looking for a partner to help your technology teams take the next step, you can reach out to Core BTS by emailing them here.

Nick Buraglio

Guest

Tom Hollingsworth

Guest

Jordan Martin

Co-Host

Eyvonne Sharp

Co-Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

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Short Take – Fixing The Problem

In this Network Collective short take, Russ shares a story about his time as an electrical engineer and the lesson he learned from it about fixing the problem.

Russ White

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History Of Networking – Martin Casado – Software Defined Networking

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

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Short Take – Security As A Tradeoff

In this episode Russ White talks about how security absolutism is actually detrimental to securing important data and systems, and how shifting our view of security to a balance of tradeoffs would be a much better approach.

Russ White

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Episode 27 – State Of The Podcast

In this episode we’re changing things up a bit. Eyvonne, Russ, and Jordan come together to chat a bit about the past year and share some exciting news about where we are heading as a podcast. Thank you for making Network Collective possible and we’re looking forward to producing even more great content over the coming year.

Jordan Martin

Host

Eyvonne Sharp

Host

Russ White

Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

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Short Take – Telecommuting

In this Short Take, Russ White shares his thoughts on the pros and cons of telecommuting and what you can do to be a better remote employee.

Russ White

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History Of Networking – Geoff Houston – BGP Security

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

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Short Take – Cisco Field Area Networking

In this Network Collective Short Take, guest commentator Nick Buraglio shares his thoughts on field area networking after watching Cisco’s presentation on the topic at Networking Field Day 17. You can see the original NFD17 presentation here: https://vimeo.com/253197120

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Short Take – The Subsidiarity Principle

In this Network Collective Short Take, Russ White discusses how the subsidiarity principle can be applied to network design decisions.

Russ White

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History Of Networking – Tony Przygienda – History of BIER

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

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Short Take – Death Of The Seven Layer Model

In this Short Take Russ White argues that the traditional seven layer model for network communication is antiquated and inadequate in explaining modern networking. He also proposes an alternative model and invites everyone to the eventual funeral of the OSI seven layer model.

Russ White

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Episode 26 – Networking War Stories Part Deux

To celebrate the first anniversary of Network Collective, we invite a stellar panel of guests to share their networking war stories.  We discuss challenging outages, difficult problems, and what we’ve learned along the way.

Terry Slattery

Guest

Ethan Banks

Guest

Jordan Martin

Host

Eyvonne Sharp

Host

Russ White

Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

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Short Take – Disaggregation and Firewalls

In this Network Collective Short Take, Russ White explores how disaggregation can be expanded to everyone’s favorite security appliance, the firewall.

Russ White

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History Of Networking – Dino Farinacci – History of LISP

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Dino Farinacci – History of LISP appeared first on Network Collective.

Short Take – In Defense of Sales Engineers

In this Network Collective short take, Eyvonne discusses the role of a sales engineer.  She highlights the value sales engineers can bring to enterprises and outlines some ways you can get the most out of your relationship with your vendor or VAR sales engineer.

Eyvonne Sharp

Host

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Episode 25 – MPLS Part 1

In a new protocol deep-dive series, Nick Russo and Russ White return to discuss MPLS. In part one, we discuss the primary use cases for MPLS, label allocation, and what SD-WAN means for the future of MPLS.

Show Notes:

1. MPLS solves 3 fundamental problems, individually or in concert
   1. Multi-tenancy/VPNs
   2. Traffic engineering
   3. Fast reroute
2. 4 bytes in a shim header, technically not a label, but we call it that
   1. 20 bits for label value, 2^20 ~= 1 million values (this is important)
   2. 3 bits for EXP, QoS really
   3. 1 S-bit to signal bottom of stack
   4. 8 bits TTL
3. Label depth is theoretically infinite, but some HW platforms have a tolerance
4. Many ways to allocate labels
   1. LDP transport
   2. LDP pseudowire
   3. BGP labeled unicast
   4. BGP based IP VPNs (VPNv4/v6)
   5. BGP pseudowire
   6. SR (really built into OSPF and ISIS for distribution)
   7. RSVP-TE
5. Some forward rules are worth mentioning (basic LDP/BGP-LU environment)
   1. If route learned via IGP/static, LDP label must be used
   2. If route learned via BGP, BGP label must be used
   3. No exceptions
6. Penultimate Hop Popping: second to last hop removes topmost label when signaled with imp-null from last hop along a given LSP, saves a lookup
7. Is MPLS is a tunnel or not:
   1. Continue reading

Short Take – Cisco Disaggregation Announcement

In this Network Collective short take, Jordan Martin shares his thoughts on the recent announcement from Cisco that they will be offering disaggregated solutions. Has Cisco seen the light? Will Cisco abandon hardware completely? Or are the doing all of this for other reasons?

Related Episodes:

• Off the Cuff – Disaggregation
• Episode 18 – Whitebox Networking

Jordan Martin

Host

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History Of Networking – Dinesh Dutt – Divergence of Compute and Networking

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

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Short Take – Complexity Wormhole

Have you ever found yourself in a complexity wormhole? Do you even know what that means? Russ White takes a look at some obvious symptoms that you’ve gone too far with complexity and proposes some ways to avoid the problem all together.

Russ White

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Episode 24 – Building Resilient Networks

The need for resiliency in network infrastructure is almost a given, but how do you get there? John Herbert, Jody Lemoine and Pete Welcher join the Network Collective team to talk through the complexities involved in a highly available infrastructure.

We would like to thank Cumulus Networks for sponsoring this episode of Network Collective. Cumulus is offering you, our listeners, a completely free O’Reilly ebook on the topic of BGP in the data center. You can get your copy of this excellent technical resource here: http://cumulusnetworks.com/networkcollectivebgp

John Herbert

Guest

Jody Lemoine

Guest

Pete Welcher

Guest

Jordan Martin

Host

Russ White

Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

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