RE: [OSPF] OSPF-MDR options

["Thomas, Matthew R" <mrthom at essex.ac.uk>]

not this Thomas (just for clarity)... I Like it
 
Matthew R Thomas

________________________________

From: Spagnolo, Phillip A [mailto:phillip.a.spagnolo at boeing.com]
Sent: Tue 04/12/2007 16:25
To: ospf at ietf.org
Subject: [OSPF] OSPF-MDR options



All,

I listened to the discussion during the meeting yesterday, and I was
surprised at how Thomas and Emmanuel were trying to cast OSPF-MDR as
having too many options.  I strongly disagree that it has too many
options.

MANETs are not for one size fits all protocols.  The environments in
which they run require flexibility.  The protocol needs to be able to be
configured to match the operational environment.  OSPF-MDR provides
options to configure your MANET for varying environments.  I have found
the options very useful for testing.

---Adjacency graph options---
List goes from most overhead efficient adjacency set to most robust to
link failure
1. AdjConnectivity=1 (maintain a uniconnected MDR backbone)
2. AdjConnectivity=2 (maintain a biconnected MDR backbone)
3. AdjConnectivity=0 (maintain a completely connected MDR backbone) same
as ptmp

---Network graph options---
1. LSAFullness=0 (only advertise adjacencies) "most overhead efficient"
2. LSAFullness=1 (advertise links to have one mincost routing path)
3. LSAFullness=2 (advertise links to have two mincost routing paths)
4. LSAFullness=3 (advertise all routable links on MDRs)
5. LSAFullness=4 (advertise all routable links) "most available routing
paths"

Is this complicated?   I don't think so.  It is flexible for the MANET
environment.

Thomas and Emmanuel, I would agree with your comments that we might need
more explanation on when to configure which options.  That would be no
problem to add before the experimental RFCs are published.  Would you
like to see something like a tutorial?

I say we move forward as planned with three experimental RFCs.

Sincerely,
Phil

Phillip A. Spagnolo
M&CT Network Technology
Boeing Phantom Works
425-373-2810
phillip.a.spagnolo at boeing.com

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