UNLEASHING THE HIVEMIND BUILDING SCALABLE NETWORKS AARON MURRIHY - - PowerPoint PPT Presentation

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Nov 11, 2023 8 likes •201 views

REANNZ LUNCHTIME SESSION 17 JULY 2019 UNLEASHING THE HIVEMIND BUILDING SCALABLE NETWORKS AARON MURRIHY SENIOR NETWORK ENGINEER aaron.murrihy@reannz.co.nz 1 REANNZ Lunch 19 Scalable Networks 4 STAGES OF NETWORK PROGRESSION 2 REANNZ

SLIDE 1 1 REANNZ Lunch ‘19 – Scalable Networks

UNLEASHING THE HIVEMIND

BUILDING SCALABLE NETWORKS

AARON MURRIHY SENIOR NETWORK ENGINEER aaron.murrihy@reannz.co.nz

REANNZ LUNCHTIME SESSION 17 JULY 2019

SLIDE 2 2 REANNZ Lunch ‘19 – Scalable Networks

4 STAGES OF NETWORK PROGRESSION

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NETWORK PROGRESSION

STAGE 1

Configuring switches by hand

I can write switch config so freakin fast!

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NETWORK PROGRESSION

STAGE 2

Using Bash and ClusterSSH to configure multiple hosts at the same time

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NETWORK PROGRESSION

STAGE 3

Provide the intended

utcome and have the

network configure itself I’d like an L2 connection between my campuses in Auckland and Invercargill

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NETWORK PROGRESSION

STAGE 4

Have the user provide the intent and take a long lunch

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NETWORK PROGRESSION

THE FOUR STAGES

4. Have the user provide the intent and

take a long lunch

3. Provide the intended outcome and

have the network configure itself

2. Using Bash and ClusterSSH to

configure multiple hosts at the same time

1. Configuring switches by hand

What do we need to get from here to here?!

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HIVEMIND

HIVEMIND!

Get everyone on the same page
With the same goals
Empowered to drive improvement
Sharing information
How?
Software engineers have this
sorted. Learn from them!

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TREAT NETWORK CONFIG LIKE CODE

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CONFIG AS CODE

TREATING CONFIG LIKE CODE

1. Documentation 2. Revision control 3. Peer review 4. Standardised templating 5. Testing

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CONFIG AS CODE

DOCUMENTATION

Assumptions
Architectures
Tooling
Process
Future thinking

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CONFIG AS CODE

REVISION CONTROL

Replication of hosts
Network config diffs
Changelogs

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CONFIG AS CODE

PEER REVIEW

Documentation
Bespoke architectures
Config Diffs

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CONFIG AS CODE

STANDARDISED TEMPLATING

Based on documentation
Host and service templates
Minimal input requirements
Most value, least work

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CONFIG AS CODE

TESTING

A network* is simpler to reason about if you can prove it is correct

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CONFIG AS CODE

TESTING

Monitoring
Network config unit tests!

Are all VPLSes fully meshed?

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Out of Scope

P.S. If anyone wants to talk actual automation, tooling, frameworks, etc, I’d love to chat.

FINALLY

NOW WE HAVE A BASE ON WHICH TO AUTOMATE

SORRY!

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THE END

QUESTIONS?

AARON MURRIHY aaron.murrihy@reannz.co.nz help@reannz.co.nz

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