Skip to main content

Route This Way: OSPF

Something I very recently learned is that routing protocols are learned on Control Planes.

Also, welcome to possibly the last post of 2019. I need a break too! 

There's plenty more coming in 2020. Meanwhile, visit and follow the new LinkedIn Company Page, if you please.





Many of these protocols will have very similar commands - network [network] wildcard [wildcard] - and OSPF has areas.



An area limits the scope of route information distribution. - mainly, less routes to propagate by summarizaton.

Look back at the image; The middle router, 4(2), is what we call a backbone area, that has interfaces in both area 1 (Router 4(1)) and area 2 (Router4).

Area 3 up there is a non-entity.

This is with the left side, area 1, having fully converged with the middle router.

Here are the outputs for show ip ospf for each router: Backbone;


All three areas are acknowledged, even our interfaceless area 3 up there.

Area 1 (left):

Interfaces in the area include its serial link and the Copper ST cable to the LAN.

Area 2 (right):

You may have noticed "Routing Process "ospf 1" and have been confused - processes and areas aren't the same thing. Processes are more for us to know what group of routers we may be working with.

Comments

Popular posts from this blog

What Do You Need? [AKA; List of Offered Services / My Next Role] (2020)

I am a trusted outsourced remote consultant for your company.   I enjoy having the flexibility to take on temporary projects from time to time! I start at part-time, temp work for now. If we like each other, we can renegotiate. If anything sounds weird, out there, or unusual - Feel free to e-mail me .  3 Services Offered Writing :      You want to pay me to write more of *waves hand* this blog? I am game .     I write B2C e-mails going out to over 280 people weekly. [ Example Job Description ]        Auditing :        Something doesn't work on your page or in your app. I can find it, or you can lose business. [ Here ] [ Example Job Description ]   I really enjoy testing apps and webpage concepts! I have an iPhone and Android phones ready. Technical: Still as-needed, always remote, contract, or temporary. IT Operations Tech [ Example Job Description ]     Hardware and SaaS support.     Cisco routing and switching (Networking). CCNA, A+, Sec+, Azure certified WORKING ON: Junos

Portfolio of UX/Product Feedback [Vol. 1]

I browse websites and apps, while making note of things I find frustrating for end users. You have probably been linked here from a form or my resume. If you have any questions about what I'm looking for in a role, click here .   This post is not to shame, but to point out errors and hopefully make my talent for finding and documenting such mistakes clear to someone hiring. Contents: Instances where I offer constructive feedback on someone's website, logo, or app. Actions that were taken by the developers or artists.  I'm glad you want your webpages to be the best they can be with my help; If you need your sites audited, e-mail me . Latest Update -  November 20th, 2020.   Vol. 2 is here .

Contactless Tech’s Role in the New Guest Experience ft. Intelity and The George

 Contactless hospitality technology is growing. You want to get away, and you'll be damned if a little thing like a deadly virus will stop you! But you still don't want to touch things. Ew. During the chat between INTELITY CEO Robert Stevenson and THE GEORGE Director of Operations Kerrie Hunter, you’ll learn how the historic boutique hotel has adapted a mobile-first guest experience in the wake of COVID-19—and how they see contactless technology affecting the future of hospitality. I don't remember how I found INTELITY (probably hoping to score a position with them), but I liked them enough to stay on the e-mail lists.