Also I think, if the total rate (including your TCP or UDP packets plus all lower layer headers which are quite substantial in wireless MAC protocols is greater than the available data rate (rate at which packets are pushed out into the channel), no matter how large your IFQ buffer is, sooner or later there will be lots of IFQ drops and hence a low throughput. Let me know what you feel. I have experimented with some UDP traffic in 802.11b and if the rate is low enough, there will not be any IFQ drops for IFQ buffers as small as 10-20 bytes after the simulation has stabilized. When the rate is large buffers of size 10 or 1000 did not matter. Let me know what you feel.
Regards Arun -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of mix si Sent: Thursday, December 29, 2005 5:19 PM To: Dario Borriello Cc: [email protected] Subject: Re: [ns] how to avoid DROP IFQ ARP Hello Dario, try this link: http://mailman.isi.edu/pipermail/ns-users/2002-March/020912.html i think you will find this page useful! I wish you a happy new year!! regards, Michael Sidiropoulos Dario Borriello <[EMAIL PROTECTED]> wrote: Hi, i'm making a simulation on wireless node and i have noticed that the throughput is very limitated due to DROP IFQ ARP. i have read that If when one packet is waiting for ARP reply, another packet which has the same destination address as the first arrives in the queue,the second packet will overwrite the first and send another ARP request at once. Is there a way to avoid this problem? Or it is impossible to increase the throughput? Thanks _________________________________________________________________ 250MB per la tua casella di posta http://www.msn.it/hotmail/minisite_10 Trova immediatamente qualsiasi tipo di file. --------------------------------- Yahoo! Shopping Find Great Deals on Holiday Gifts at Yahoo! Shopping DISCLAIMER: This email (including any attachments) is intended for the sole use of the intended recipient/s and may contain material that is CONFIDENTIAL AND PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or distribution or forwarding of any or all of the contents in this message is STRICTLY PROHIBITED. If you are not the intended recipient, please contact the sender by email and delete all copies; your cooperation in this regard is appreciated.
