Hi! On 8/18/05, Noam Meltzer <[EMAIL PROTECTED]> wrote: > Hi, > One year ago in my previous apartment I had connection problems to the > cables. > After lot of misery I have found that the problem had consisted of two > elements: > > 1. The cable connection is not very stable. In their underlying > protocol they lose many packets, resulting sometimes in losing *your* > packets. > I had cable technicians to my place at least 3 times, messing around > with the signals strength of the Rx and Tx until they got to something > which is similar to a stabler connection.
What did you tell to cable company, so they come? Did it cost you money? Is my case, half of the packets are lost even when traffic is very low (only one ssh connection, sometimes also ping test). How can I be sure, that the problem is not "inside" the computer? > 2. The PPP configuration I had was too sensitive. I had to change the > LCP configuration to do more LCP requests before declaring the > connection as "dead" (I think 5 lost packets in sequence) and to > enlarge the time interval between every LCP packet (to 30 sec. if i > recall correctly). The main problem is connection speed (packets loosing), rather than unexpected termination. But I'll check lcp-echo-* options too. > > After these two elements were fixed, I did not suffer from any > noticeable disruptions in my connection. > > Not sure that this is your problem, but maybe it would help... Probably, p.1 will help me! > Noam > > On 8/17/05, Ilia K. <[EMAIL PROTECTED]> wrote: > > Hi, All! > > > > I've convinced one girl to install linux instead of winXP. She is in > > Jerusalem and I am in Haifa, but we managed to install SuSe 9.2 and > > connect it to barak's cable internet through PPTP. Now I can ssh to > > the computer. Unfortunately, the connection is _very_ unstable and > > slow. Half of the packets are seems to be lost. I suppose, the problem > > can be somewhere in routing (this is my "weak point", so the > > probability for the mistakes is high). > > I very want, that this girl will stay with linux, but internet > > connection seems to be the "bottle neck". I'll appreciate any > > feedback, especially helpful one :) > > > > PPTP is set up by executing: > > linux:~# pppd call barak > > > > The settings (after PPTP is up) are: > > > > modem's address (in modem<->eth0 network) seems to be 172.25.192.1 > > > > linux:~ # ifconfig eth0; ifconfig ppp0 > > eth0 Link encap:Ethernet HWaddr 00:50:8D:62:7C:5B > > inet addr:172.25.212.201 Bcast:255.255.255.255 > Mask:255.255.2240 > > inet6 addr: fe80::250:8dff:fe62:7c5b/64 Scope:Link > > UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 > > RX packets:253799 errors:0 dropped:0 overruns:0 frame:0 > > TX packets:14236 errors:0 dropped:0 overruns:0 carrier:0 > > collisions:0 txqueuelen:1000 > > RX bytes:20082953 (19.1 Mb) TX bytes:2413726 (2.3 Mb) > > Interrupt:10 Base address:0xb000 > > > > ppp0 Link encap:Point-to-Point Protocol > > inet addr:85.64.160.99 P-t-P:172.26.255.17 > Mask:255.255.255.255 > > UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1000 Metric:1 > > RX packets:203 errors:0 dropped:0 overruns:0 frame:0 > > TX packets:153 errors:0 dropped:0 overruns:0 carrier:0 > > collisions:0 txqueuelen:3 > > RX bytes:14557 (14.2 Kb) TX bytes:13792 (13.4 Kb) > > > > linux:~ # route -n > > Kernel IP routing table > > Destination Gateway Genmask Flags Metric Ref Use > Iface > > 172.26.255.17 172.25.192.1 255.255.255.255 UGH 0 0 0 > eth0 > > 172.26.255.17 0.0.0.0 255.255.255.255 UH 0 0 0 > ppp0 > > 172.25.192.0 0.0.0.0 255.255.224.0 U 0 0 0 > eth0 > > 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 > eth0 > > 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 > lo > > 0.0.0.0 172.26.255.17 0.0.0.0 UG 0 0 0 > ppp0 > > > > Note: The first route (172.26.255.17/32 via 172.25.192.1) was manualy > > added before running pppd/pptp. > > > > linux:~ # cat /var/lib/dhcpcd/dhcpcd-eth0.info > > IPADDR=172.25.212.201 > > NETMASK=255.255.224.0 > > NETWORK=172.25.192.0 > > BROADCAST=255.255.255.255 > > GATEWAY=172.25.192.1 > > HOSTNAME='linux' > > DNS=192.168.101.102,192.168.101.101 > > DHCPSID=213.57.35.2 > > DHCPGIADDR=172.25.160.1 > > DHCPSIADDR=0.0.0.0 > > DHCPCHADDR=00:50:8D:62:7C:5B > > DHCPSHADDR=00:05:00:E7:CD:A6 > > DHCPSNAME='' > > LEASETIME=426054 > > RENEWALTIME=213027 > > REBINDTIME=372797 > > INTERFACE='eth0' > > CLASSID='Linux 2.6.8-24-default i686' > > CLIENTID=00:50:8D:62:7C:5B > > > > linux:~ # rpm -q pptp > > pptp-1.5.0-2 > > > > linux:~ # cat /etc/ppp/peers/barak > > linkname barak > > noauth > > user SOME_USERNAME > > pty "/usr/sbin/pptp 172.26.255.17 --nolaunchpppd" > > lock > > noipdefault > > usepeerdns > > nobsdcomp > > nodeflate > > lcp-echo-failure 10 > > lcp-echo-interval 20 > > defaultroute > > #mtu 1460 > > mtu 1000 > > mru 1000 > > debug > > > > > > In /var/log/messages I see lots of pptp's messages like these: > > Aug 17 20:41:52 linux pptp[10933]: anon > > log[decaps_gre:pptp_gre.c:404]: buffering packet 4098 (expecting 4082, > > lost or reordered) > > Aug 17 20:41:52 linux pptp[10933]: anon > > log[decaps_gre:pptp_gre.c:404]: buffering packet 4099 (expecting 4082, > > lost or reordered) > > Aug 17 20:41:52 linux pptp[10933]: anon > > log[decaps_gre:pptp_gre.c:404]: buffering packet 4100 (expecting 4082, > > lost or reordered) > > Aug 17 20:41:52 linux pptp[10933]: anon > > log[decaps_gre:pptp_gre.c:404]: buffering packet 4101 (expecting 4082, > > lost or reordered) > > Aug 17 20:41:52 linux pptp[10933]: anon > > log[decaps_gre:pptp_gre.c:404]: buffering packet 4102 (expecting 4082, > > lost or reordered) > > Aug 17 20:42:27 linux pptp[10933]: anon > > log[decaps_gre:pptp_gre.c:395]: discarding duplicate or old packet > > 4082 (expecting 4116) > > Aug 17 20:42:27 linux pptp[10933]: anon > > log[decaps_gre:pptp_gre.c:395]: discarding duplicate or old packet > > 4083 (expecting 4116) > > Aug 17 20:42:27 linux pptp[10933]: anon > > log[decaps_gre:pptp_gre.c:395]: discarding duplicate or old packet > > 4084 (expecting 4116) > > Aug 17 20:42:27 linux pptp[10933]: anon > > log[decaps_gre:pptp_gre.c:395]: discarding duplicate or old packet > > 4085 (expecting 4116) > > > > To unsubscribe, send mail to [EMAIL PROTECTED] with > > the word "unsubscribe" in the message body, e.g., run the command > > echo unsubscribe | mail [EMAIL PROTECTED] > > > > > ================================================================To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
