<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt">Hi Joe,<br><br>I would start by using iperf in UDP mode to see just how many out of order packets you are getting (probably half by the sound of it).<br><br>Can the OS/application you are testing with re-order packets, or will it simply ditch anything that is out of sequence and ask for a re-transmit ?<br><br>Personally I am not suprised with the result although I have no first hand experience with MLPPP over links that are so disparate.<br><br><br>regards,<br>Tony.<br><div><span><br></span></div><div><br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial"
size="2"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Joseph Goldman <joe@apcs.com.au><br> <b><span style="font-weight: bold;">To:</span></b> ausnog@lists.ausnog.net <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, 27 March 2013 7:54 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> [AusNOG] MLPPP experiences<br> </font> </div> <br>Hi list,<br><br> Recently found the need to start experimenting with MLPPP for some upcoming deployments.<br><br> Our LAC has been capable for some time we've just never really had a need for it.<br><br> In our office, we have a Telstra ADSL and an Optus ULL line. Ultimately, there is a 10ms difference between them back to our LAC (one's at ~30 the other at ~40). We achieved a MLPPP connection to our LAC but what we found were less then stellar results. The 2 lines, by themselves, sync and run at around 11mbit/800kbit, but when being used in MLPPP we found we
couldn't achieve above 10mbit.<br><br> Monitoring the interfaces we could see that it was successfully sharing that 10mbit across both links equally, we just couldn't max out the lot.<br><br> In your experiences, does the difference in latency that large cause big problems (i.e. packets ultimately transmitting out of order and a lot of corrections to be done) or are there other caveats of MLPPP i should be aware of that could cause similar issues?<br><br> For reference sake, our test LAC is a Cisco 7206 and the test CPE is a Mikrotik RouterOS device (using 2 ADSL Modems in bridge into an ethernet port each).<br><br>Thanks,<br>Joe<br>_______________________________________________<br>AusNOG mailing list<br><a ymailto="mailto:AusNOG@lists.ausnog.net" href="mailto:AusNOG@lists.ausnog.net">AusNOG@lists.ausnog.net</a><br><a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a><br><br><br>
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