IRB – Integrated Routing and Bridging.

My understanding of IRB:

I did another Volume 1 lab yesterday. Again i hit my head against the infamous IRB feature.

IRB stands for Integrated Routing and Bridging. Below is my understanding of the technology. I could be very wrong about this, so please correct me if i state something completely incorrect.

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Bridging  CCIE  IRB 

Fallback Bridging

First off, thanks to the two sites below, i finally learned what this beast was about. Thanks guys!

[Human Modem][1]

[CCIE Candidate][2]

I got around to play with fallback bridging yesterday. I want to summarize its important points here.

To understand it in the first place, it helps to give some information on why its needed.

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More VOD – Scott Morris's voice is soothing :)

I am getting used to hearing Scott Morris’s voice by now 🙂

I am doing Video On Demand classes at the moment. Im starting from the beginning and going through them one by one. Lots of new things to learn and study. Today for example i learned about “real” bridging. Since its not on any blueprint for CCNA, CCNP or even CCIE R&S, its not something ive come across before. It is a pretty cool feature. In the VOD, it was configured over frame-relay over a certain DLCI. You could then have the same subnet on both sides and do ARP request (Well, any ethernet (ieee) stuff) and get a response, and then transfer data.

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