Hi,Andy Thank your very much! For the MLPPP LFI,I found that in Cisco configuration,it use "ppp multilink;ppp multilink fragmentation;ppp multilink fragment-delay 20;ppp multilink interleave " command to enable MLPPP LFI.So I think just realizing the same function on my linux router would be fine.But I got no idea how to do this on linux.So is there anything with iproute2?Would you please supply some suggestions? As for "The packet size threshold before fragmenting AF and BE packets MUST be configurable", I am completely lost.Any advise is highly appreciated! Thank you again! ======= 2004-05-30 15:29:20 You wrote：======= >swcims wrote: >> Hi,Andy >> I don't understand what you mean.I have a adsl router based on mips linux2.4.17.In this adsl router,one side is 100Mbit ethernet card,another side is adsl line,as following: >> LAN------(ethernet)--------ADSL Router------(ADSL line)-------------WAN >> On this adsl line,it can configue rfc1483bridge or router,or pppoe to get wan ip from ISP. I think this side(upstream) is the bottleneck link. I ported iproute2/tc on this router and i can control traffice on the upstream line. >> But I got completely no idea for doing these: (from TR059 Technical Report DSL Forum) >> 1.The device MUST support the capability to fragment AF and BE traffic in order to constrain the perturbing impact of AF and BE packets on EF traffic delay, for example using a mechanism such as MLPPP LFI.(RFC1990) >> 2. The packet size threshold before fragmenting AF and BE packets MUST be configurable. >> Thank you very much! > >What I mean is that if you want to mess around with packets below ip >level, the other end - your ISP/teleco , will need to be running >software that knows what you are doing so that it can reconstruct the >packets before routing. > >If you have a specific need for your upstream not to be delayed more >than X ms you could adjust your MTUs/MSS clamp - the size will depend on >your bitrate and max delay required. > >Andy. > > > = = = = = = = = = = = = = = = = = = = = Regards. swcims swcims@xxxxxxx 2004-05-31 ???????????????????ē?%?,S ????醑?m??ē????????-?棹V?廖Y3???????
