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Re: [manet] DYMO and other routing protocols

There is no winner takes all in the contest of routing protocols for
MANET. I think each protocol and its supporters can easily make a case
where it will beat other protocols. Simply look at conference
publications for good examples.

That said, we have chosen to standardize DYMO and OLSRv2 - one
reactive and one reactive protocol in the MANET WG. For more
information regarding when one might deploy one or the other, please
see the applicability statements in the drafts.

DYMO is a successor to AODV (and other reactive protocols). The
specification is chartered to become a proposed standard. AODV is not
being actively discussed or standardized in the WG.

Ian

On 6/6/07, David Murray <30179198 at student.murdoch.edu.au> wrote: 
Hi,

I am wondering how DYMO fits in with the other routing protocols. I
have read a number of papers that discuss how on-demand routing
protocols like DSR/AODV work better in highly mobile environments where
movement is fast, CPU and memory are low and batteries are limited.
Equally, in situations where movement is very low, and there are no
power limitations, protocols like OLSR/TBRPF/STAR perform better.

So, I have a mental picture of OLSR/TBRPF being predominantly used in
stationary 802.11 mesh devices and AODV/DYMO being used to connect
users mobile devices ush as phones and PDAs. Is this correct or are
things not quite as simple as this? (I know RFC 2501 discusses MANET
applications and characteristics but the discussion is quite general)

If this is correct, it seems to me that DYMO and AODV are used in very
similar situations (the ad hoc interconnect between users devices). I
am aware that DYMO is a simplified version of AODV both in code and
network operation. It seems like the major difference is the path
accumulation feature in DYMO which allows nodes to append their
information to a RREP to give other nodes better knowledge of the
topology. It also seems that the hello feature has been removed in
DYMO. So, is DYMO likely to be a replacement for AODV or do they have
different uses/applications?

Thanks for your time

Dave


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