Date: Tue, 9 Sep 2003 09:53:00 +0100 From: "Dan Hardiker" <dhardiker@eorigen.com> To: "Michael Bretterklieber" <mbretter@a-quadrat.at> Cc: freebsd-net@freebsd.org Subject: Re: MPD Issues - Errors and Mysterious Packet Loss Message-ID: <005b01c376af$c60693a0$3601a8c0@ws4> References: <024601c37607$7de4ef70$3601a8c0@ws4> <Pine.WNT.4.56.0309091021040.3872@BRUTUS>
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> > [Dan Hardiker] > > When I connect to the VPN I get a connection status box in my XP sys tray. > > If I open that up I get a list of bytes sent and received, as well as the > > compression % and number of errors. Compression is always 0% even through I > > tell mpd to use compression and have checked its enabled in the VPN > > connection settings. > [Michael Bretterklieber] > MPD (netgraph) doesen't support compression, because it's proprietary and > patentet, if you realy wan't to have compression (=STAC Compression) then > you have to buy the sources from www.hifn.com, but usualy you don't need > compression. Not having compression is perfectly fine - I was unsure if this was symtematic of my problem, but its not. > > If I sit the machine pinging the LAN IP of the MPD server when connected to > > the VPN, I start racking up lots of errors. Ive only been pinging for 15 > > mins and the errors is up to 58. Unfortunatly it doesnt tell me WHAT those > > errors are, or where to start looking to resolve them. > > > > The short of it is that the VPN works, but its paralysingly slow (throughput > > has been logged via trafshow as being 300 bytes > 3k a sec on a 256kbit ADSL > > upstream ... averaging mostly around 300-400 bps) and could really do with > > some pointers as to where to start looking. I have since managed to find (on the source forge mpd mailing list not mentioned on the mpd homepages) someone else with an identical problem (who was advised to install a TCP-MSS patch). It appears that the problem lies with XP connected to MPD using a VPN. Actually on reflection - it was you who suggested it! For reference: http://sourceforge.net/mailarchive/forum.php?thread_id=3083368&forum_id=32902 > can you please post you configuration and mpd's logfile? [MPD.CONF] # # Default configuration is "myisp" # default: # log +ccp +ccp2 +ccp3 +chat2 +echo +frame +mp +mp2 +pptp2 +pptp3 load zen # Net Connection A zen: load pptpClient0 load pptpClient1 load pptpClient2 load pptpClient3 load pptpClient4 # Net Connection B demon: load pptpClient5 load pptpClient6 load pptpClient7 load pptpClient8 load pptpClient9 # # Mpd as a PPTP server compatible with Microsoft Dial-Up Networking clients. # pptpClient0: new -i ng0 pptp0 pptp0 set ipcp ranges 192.168.1.3/24 192.168.1.101/24 load pptp pptpClient1: new -i ng1 pptp1 pptp1 set ipcp ranges 192.168.1.3/24 192.168.1.102/24 load pptp pptpClient2: new -i ng2 pptp2 pptp2 set ipcp ranges 192.168.1.3/24 192.168.1.103/24 load pptp pptpClient3: new -i ng3 pptp3 pptp3 set ipcp ranges 192.168.1.3/24 192.168.1.104/24 load pptp pptpClient4: new -i ng4 pptp4 pptp4 set ipcp ranges 192.168.1.3/24 192.168.1.105/24 load pptp pptpClient5: new -i ng5 pptp5 pptp5 set ipcp ranges 192.168.1.3/24 192.168.1.105/24 load pptp pptpClient6: new -i ng6 pptp6 pptp6 set ipcp ranges 192.168.1.3/24 192.168.1.105/24 load pptp pptpClient7: new -i ng7 pptp7 pptp7 set ipcp ranges 192.168.1.3/24 192.168.1.105/24 load pptp pptpClient8: new -i ng8 pptp8 pptp8 set ipcp ranges 192.168.1.3/24 192.168.1.105/24 load pptp pptpClient9: new -i ng9 pptp9 pptp9 set ipcp ranges 192.168.1.3/24 192.168.1.105/24 load pptp pptp: set iface disable on-demand set iface enable proxy-arp set iface idle 3600 set iface mtu 1500 set iface enable tcpmssfix set bundle enable multilink set bundle enable round-robin set bundle enable crypt-reqd set link yes acfcomp protocomp set link no pap chap set link enable chap set link keep-alive 10 60 set link mtu 1500 set ipcp yes vjcomp set ipcp dns 192.168.1.250 set ipcp nbns 192.168.1.11 set bundle enable compression set ccp yes mppc set ccp yes mpp-e40 set ccp yes mpp-e128 set ccp yes mpp-stateless [MPD.LINKS] # # For our PPTP server # (Local DNS provides the public IPs for the 2 net connections, zen being public2 and demon being public) # I have so far been unsuccessful in getting mpd to listen to 2 IPs at the same time on the same links pptp0: set link type pptp set pptp self armadillo.public2.lan.eorigen.com set pptp enable incoming set pptp disable originate pptp1: set link type pptp set pptp self armadillo.public2.lan.eorigen.com set pptp enable incoming set pptp disable originate pptp2: set link type pptp set pptp self armadillo.public2.lan.eorigen.com set pptp enable incoming set pptp disable originate pptp3: set link type pptp set pptp self armadillo.public2.lan.eorigen.com set pptp enable incoming set pptp disable originate pptp4: set link type pptp set pptp self armadillo.public2.lan.eorigen.com set pptp enable incoming set pptp disable originate pptp5: set link type pptp set pptp self armadillo.public.lan.eorigen.com set pptp enable incoming set pptp disable originate pptp6: set link type pptp set pptp self armadillo.public.lan.eorigen.com set pptp enable incoming set pptp disable originate pptp7: set link type pptp set pptp self armadillo.public.lan.eorigen.com set pptp enable incoming set pptp disable originate pptp8: set link type pptp set pptp self armadillo.public.lan.eorigen.com set pptp enable incoming set pptp disable originate pptp9: set link type pptp set pptp self armadillo.public.lan.eorigen.com set pptp enable incoming set pptp disable originate [MPD Log File] I havent yet worked out how to get mpd into its own log file - have to modify syslog.conf I believe. My current all.log file is very very big and has lots of mpd stuff in, but would consitute a 10mb file. Is there anything in particular you are looking for or would you like me to upload it to a webserver somewhere? Thanks for your help - going to try the patch now, will let you know the results. -- Dan Hardiker [dhardiker@eorigen.com] ADAM Systems Engineer eOrigen Ltd
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