Orhan Ergun 2 Comments

PIM Sparse Mode Vs PIM SSM

One of my students asked me this question a month ago. “What is the difference between PIM Sparse Mode and PIM SSM (Source Specific Multicast)?”

But, since I had two CCDE bootcamps in one month, I didn’t have time to answer the question on this platform.

By the way I have seen this mis understanding in the recent popular design books as well, so writing about it was necessary anymore.

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Orhan Ergun 3 Comments

DMVPN vs. GETVPN

DMVPN vs. GETVPN – In this post I am going to cover the similarities and the differences between GETVPN and the DMVPN.

For the DMVPN basics, please read this post.

Both technologies provide overlay virtual private network in general and I will use the below comparison table and the design attributes listed in it. For the more technology comparison tables please click here. Read more

Orhan Ergun 5 Comments

Pim Sparse Mode

Pim sparse mode – Multicast is used to send the data to the multiple receivers at the same time. Multicast reduces the load on the servers (Senders/Source in multicast term), provides efficient capacity usage on the network links.

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Orhan Ergun No Comments

Multicast Design – Podcast

Efficient data transfer, optimised resource usage , simplified configuration, optimum bandwidth usage are the main characteristics of Multicast.

In the diagram below; unicast and multicast flows are shown.

From the source, if same packet will be sent , with unicast transport you send two copies. Read more