Re: [Ospf-manet] URL for MPR-extension software
Emmanuel Baccelli <Emmanuel.Baccelli@inria.fr> Fri, 22 December 2006 17:17 UTC
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Date: Fri, 22 Dec 2006 18:17:33 +0100
From: Emmanuel Baccelli <Emmanuel.Baccelli@inria.fr>
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Subject: Re: [Ospf-manet] URL for MPR-extension software
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Dear Richard, all, Just to clarify, the MPR proposal offers topology reduction, adjacency reduction, and uses multicast retransmissions. It was initially implemented based on the OR code in order to produce something which is compliant with the protocol and operational within the simulator in a timely fashion. Other than adjacency reduction, which is optional, we believe that the simulation code complies to the specification, however if you can point out specific issues (and even have a patch) we welcome and appreciate the input from you as well as from the rest of the WG. We believe that it is in everybody's interest to progress as decided at the San Diego meeting to get the three current proposals matured and forward to experimental, and as you, we are working hard towards that goal. To address your specific technical concerns from previous emails, it seems you point out that topology reduction is a key component. We agree. Both MPR and MDR solutions feature mechanisms for this purpose. The MPR-OSPF protocol implementation for GTnet that has been made available and tested shows that MPR topology reduction is simple, efficient, and fits well with OSPF requirements (such as symetric link advertizement, and stability with regards to received LSAs). We understand that extensions to the MDR proposal with a new topology reduction scheme are envisioned in the future. We are looking forward to that. Synchronization is also an important issue and, as you point out, the two different ways (direct and indirect synchronization) feature different advantages. The MPR adjacencies seem to offer a good compromize - in particular the use of multicast greatly reduces the weight of adjacencies in LSA transmission, and simulations seem to confirm this. We are currently in the process of double-checking the code that implements this, which will, of course, shortly be made available. With the best wishes for a happy holiday season to you and yours, Emmanuel _______________________________________________ Ospf-manet mailing list Ospf-manet@ietf.org https://www1.ietf.org/mailman/listinfo/ospf-manet
- Re: [Ospf-manet] URL for MPR-extension software Emmanuel Baccelli
- [Ospf-manet] URL for MPR-extension software Henderson, Thomas R
- Re: [Ospf-manet] URL for MPR-extension software Acee Lindem
- Re: [Ospf-manet] URL for MPR-extension software Emmanuel Baccelli
- Re: [Ospf-manet] URL for MPR-extension software Richard Ogier
- Re: [Ospf-manet] URL for MPR-extension software Emmanuel Baccelli
- RE: [Ospf-manet] URL for MPR-extension software Henderson, Thomas R
- RE: [Ospf-manet] URL for MPR-extension software Emmanuel Baccelli
- Re: [Ospf-manet] URL for MPR-extension software Richard Ogier
- RE: [Ospf-manet] URL for MPR-extension software Emmanuel Baccelli
- RE: [Ospf-manet] URL for MPR-extension software Henderson, Thomas R
- Re: [Ospf-manet] URL for MPR-extension software Richard Ogier
- Re: [Ospf-manet] URL for MPR-extension software Richard Ogier