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[ns] link layer feedback and AODV

To: ns-users@ISI.EDU
Subject: [ns] link layer feedback and AODV
From: Attila Tï¿½rï¿½k <torok@ttt-atm.ttt.bme.hu>
Date: Tue, 8 May 2001 20:06:03 +0200
Organization: BUTE
Reply-To: Attila Tï¿½rï¿½k <torok@ttt-atm.ttt.bme.hu>
Sender: owner-ns-users@ISI.EDU

Hi!

 I tried to simulate TCP over ad hoc networks, using AODV for routing.
 I used a simple line topology with a single TCP flow (packetSize_
 =1460, window_ =20, and MAC 802.11 RTS/CTS).
 Enabling the local repair function I noticed the following problem:
   In many cases the MAC layer reports link_layer_failure (cannot
   obtain media for TCP packets) and triggers the AODV for a new route
   lookup. Sometimes this problem occures even after the establishment
   of a new route, thus a RREQ will be initiated again!

   It is normal to have so many MAC layer retransmissions?
   Any similar experiences with real WaveLAN testbeds?
   

   Thanks in advance: Ati

Follow-Ups:
- Re: [ns] link layer feedback and AODV
  - From: Felix Ko <felix.ko@mchp.siemens.de>

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