Date: Mon, 18 Feb 2002 18:15:39 +0100 From: Marcel de Vries <mdevries@mdv.dhs.org> To: freebsd-net@freebsd.org Subject: network buffer problem Message-ID: <5.1.0.14.2.20020218164647.01edeaf8@outshine>
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Hi all, I'm getting alot of buffer problems with my internet connection. I'm using a (Dutch) Mxstream ADSL for Broadband internet connection. The ISDN Alcatel ADSL modem is loaded with firmware: Active : GSV7AA3.270 As you can see below I'm using mpd-netgraph for PPTP to connect on the ADSL modem (interface ng0) root@Dominator# mpd -v Version 3.7 (root@mdv.dhs.org 20:17 16-Feb-2002) interface ep0 is connected to the ADSL modem. A friend of mine with almost an indentical system also using mxstream ADSL had the same problem. But changing the MTU on ng0 to 1492 (IEEE 802.3/802.2 standard) solved his buffer problem. In my case it didn't solve... Setting NMBClusters in the kernelconf doesn't help at all. Tracked the BSD hackers archive, there are some known bugs regarding the ep driver and 'No buffer space available' Still fresh yet unsolved bugs? correct? My Error output : root@Dominator# ping -R -s 6144 www.bart.nl PING viaweb.vianetworks.nl (212.61.15.21): 6144 data bytes ping: sendto: No buffer space available ping: sendto: No buffer space available 6152 bytes from 212.61.15.21: icmp_seq=2 ttl=58 time=303.227 ms RR: mxstream.pbw.xs4all.net (194.109.5.66) 0.ge-0-3-0.xr1.pbw.xs4all.net (194.109.5.13) ams-ix.xs4all.net (193.148.15.48) amsterdam4.bart.net (194.158.190.72) router8.iae.nl (212.61.25.174) router22.iae.nl (212.61.15.1) morgoth.vianetworks.nl (212.61.15.21) router22.iae.nl (212.61.25.187) ams-ix.iae.net (193.148.15.82) 6152 bytes from 212.61.15.21: icmp_seq=3 ttl=58 time=302.734 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=4 ttl=58 time=304.016 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=5 ttl=58 time=303.142 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=6 ttl=58 time=303.004 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=7 ttl=58 time=302.006 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=8 ttl=58 time=302.970 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=9 ttl=58 time=302.672 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=10 ttl=58 time=302.604 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=11 ttl=58 time=312.702 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=12 ttl=58 time=303.242 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=14 ttl=58 time=302.006 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=15 ttl=58 time=302.340 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=16 ttl=58 time=302.982 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=17 ttl=58 time=301.376 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=18 ttl=58 time=322.473 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=19 ttl=58 time=304.341 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=20 ttl=58 time=301.912 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=21 ttl=58 time=445.256 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=22 ttl=58 time=302.685 ms (same route) ping: sendto: No buffer space available ping: sendto: No buffer space available 6152 bytes from 212.61.15.21: icmp_seq=25 ttl=58 time=302.050 ms (same route) ping: sendto: No buffer space available 6152 bytes from 212.61.15.21: icmp_seq=27 ttl=58 time=302.753 ms (same route) ping: sendto: No buffer space available ping: sendto: No buffer space available 6152 bytes from 212.61.15.21: icmp_seq=30 ttl=58 time=301.620 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=31 ttl=58 time=304.179 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=32 ttl=58 time=301.974 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=33 ttl=58 time=303.227 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=34 ttl=58 time=302.581 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=35 ttl=58 time=303.215 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=36 ttl=58 time=301.326 ms (same route) 6152 bytes from 212.61.15.21: icmp_seq=37 ttl=58 time=301.750 ms (same route) ^C --- viaweb.vianetworks.nl ping statistics --- 38 packets transmitted, 30 packets received, 21% packet loss round-trip min/avg/max/stddev = 301.326/308.412/445.256/25.723 ms Subject: No buffer space available System: FreeBSD ####### 4.5-STABLE FreeBSD 4.5-STABLE #3: Sat Feb 16 00:09:41 CET 2002 root@:/usr/src/sys/compile/DOMINATOR i386 Network: root@Dominator# ifconfig rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet 192.168.1.1 netmask 0xfffffff0 broadcast 192.168.1.15 atalk 65280.131 range 65280-65534 phase 2 broadcast 0.255 ether 00:40:95:2d:01:c8 media: Ethernet autoselect (100baseTX) status: active lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500 ep0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet 10.0.0.150 netmask 0xffffff00 broadcast 10.0.0.255 ether 00:60:08:7e:77:74 media: Ethernet 10baseT/UTP lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 inet 127.0.0.1 netmask 0xff000000 atalk 0.0 range 0-0 phase 2 ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500 gif0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280 tunnel inet #.#.#.# --> #.#.#.# inet 192.168.1.1 --> 192.168.2.100 netmask 0xffffff00 ng0: flags=88d1<UP,POINTOPOINT,RUNNING,NOARP,SIMPLEX,MULTICAST> mtu 1492 inet #.#.#.# --> 195.190.240.105 netmask 0xffffffff 3/368/16768 mbufs in use (current/peak/max): 3 mbufs allocated to data 0/32/4192 mbuf clusters in use (current/peak/max) 156 Kbytes allocated to network (1% of mb_map in use) 0 requests for memory denied 0 requests for memory delayed 0 calls to protocol drain routines Is there Thanks in advance! Grtz, Marcel To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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