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adnoh
Tux's lil' helper
Joined: 21 Jul 2005
Posts: 120
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 Posted: Mon Aug 08, 2005 8:47 pm Post subject: unbelivable ..strange things happening with my gentoo-SOLVED |
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hello @ all ....
I have a Gentoo box installed as dsl/router (ppp / rp-pppoe) for my Internet and a laptop as client ...
yesterday I wanted to go to surf a little bit and ... nothing happended. when i "ping"ed a little bit around i notized Response Times > 2 Sekonds (up to over 10 Sek !!!) not only from my laptop but from the router too !
I restarted the gentoo box, re-emerged ppp / rp-pppoe and the Kernel (2.6.11-gentoo-r6) but the problem was still there. I was wondering - if i used the laptop directly with my dsl hardware - all works fine, so the dsl-modem must be ok.
after hours of testing I notized one strange thing:
if I make any IN/OUTput in a SSH session from my laptop to the gentoo box my ping-time was realy good (~30 ms).
After playing a little bit arround i notized that every time I generate traffic on my ETH0 the I-Net (on ETH1 / PPP0) was fast. Can somewone explain me this? I'm doing a "ping -f 192.168.0.xxx" at the moment so I can write you and hope that someone can help me !!!!!
By the way ... we had last week a thunderstorm and thince then my sattelite receiver is going realy crazy too (while watching tv sometimes the screen blanks) - it has an embedded linux too ... 
Is it possible that there was a lightning strike or something that smashed my receiver and the Ethernet-card??
... or am I just Mr. LINUX-KILLER 
I thought I ' ve had seen a lot .. but this .... 
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the german dude with the broken english
Last edited by adnoh on Mon Aug 22, 2005 8:35 pm; edited 1 time in total |
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Kruegi
Guru
Joined: 09 Feb 2005
Posts: 406
Location: Clausthal-Zellerfeld; DE
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| Posted: Mon Aug 08, 2005 10:10 pm Post subject: |
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Maybe it's just be a misconfiguration:
routing table? ARP table? interface configuration?
additional network configuration (like traffic shapping, firewall...)?
Thomas |
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ph03n1x
l33t
Joined: 06 Feb 2003
Posts: 756
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| Posted: Mon Aug 08, 2005 11:34 pm Post subject: |
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Switch everything off (also the modem) and see if it is still behaving that way.
Nearly all hardware sold nowadays is crap due to immense cost pressure. I've seen this a lot where modems etc. behaved really strange. If u lucky u can fix it by switching them off and on again. Sometimes it really needs a hard reset. |
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adnoh
Tux's lil' helper
Joined: 21 Jul 2005
Posts: 120
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| Posted: Tue Aug 09, 2005 6:00 am Post subject: |
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I reseted the modem and any hardware yesterday and nothing happened. With my Laptop directly connected to the modem everything works fine so I don't think that the modem is it. I didn't configure or install anything on the gentoo-box for maybe 1 month !!
I post you some Output i wonder'ed about:
the first 2 ip-addresses were nameservers from my provider. 84.58.0.1 and 84.58.46.44 were my externel ppp-ips that time
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dom ppp # tracepath -n 192.50.140.252
1: 84.58.46.44 0.455ms pmtu 1492
1: no reply
1: 84.58.0.1 2999.878ms
1: 84.58.0.1 2000.535ms
1: 84.58.0.1 1000.710ms
3: no reply
2: 145.254.0.73 2999.803ms !H
Resume: pmtu 1492
dom ppp # tracepath -n 145.253.2.75
1: 84.58.46.44 0.447ms pmtu 1492
1: no reply
1: 84.58.0.1 2999.227ms
1: 84.58.0.1 2000.041ms
1: 84.58.0.1 1000.213ms
3: no reply
2: 145.254.0.237 2999.756ms
3: 145.254.18.254 2999.431ms
3: 145.254.18.254 1999.965ms
3: 145.254.18.254 1000.135ms
5: no reply
4: 145.254.5.38 2999.867ms
5: 145.254.5.78 2999.619ms
5: 145.254.5.78 2000.062ms
5: 145.254.5.78 1000.240ms
7: no reply
6: 145.254.5.78 asymm 5 2999.753ms !H
Resume: pmtu 1492
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why doe's it do this loops ?? Here more output
| Code: |
dom ppp # route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
84.58.0.1 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 84.58.0.1 0.0.0.0 UG 0 0 0 ppp0
dom ppp # ifconfig
eth0 Link encap:Ethernet HWaddr 00:0A:E6:4E:3F:A0
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:20830 errors:0 dropped:0 overruns:0 frame:0
TX packets:17920 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1760897 (1.6 Mb) TX bytes:1879654 (1.7 Mb)
Interrupt:11 Base address:0xd400
eth1 Link encap:Ethernet HWaddr 00:40:F4:3B:71:50
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:798 errors:0 dropped:20 overruns:1 frame:0
TX packets:843 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:84032 (82.0 Kb) TX bytes:121666 (118.8 Kb)
Interrupt:11 Base address:0xc000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:5 errors:0 dropped:0 overruns:0 frame:0
TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1828 (1.7 Kb) TX bytes:1828 (1.7 Kb)
ppp0 Link encap:Point-to-Point Protocol
inet addr:84.58.46.44 P-t-P:84.58.0.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:73 errors:0 dropped:0 overruns:0 frame:0
TX packets:76 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:20314 (19.8 Kb) TX bytes:39057 (38.1 Kb)
[ebuild R ] net-dialup/rp-pppoe-3.5-r11 -X -tcltk 0 kB
[ebuild R ] net-dialup/ppp-2.4.3-r6 -activefilter -atm -dhcp -gtk +ipv6 -mppe-mppc +pam -radius 0 kB
Portage 2.0.51.22-r1 (default-linux/x86/2005.0, gcc-3.3.5-20050130, glibc-2.3.5-r0, 2.6.11-gentoo-r11-sh i686)
=================================================================
System uname: 2.6.11-gentoo-r11-sh i686 AMD Athlon(tm) XP 1800+
Gentoo Base System version 1.6.12
distcc 2.16 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled]
dev-lang/python: 2.3.5, 2.4.1-r1
sys-apps/sandbox: 1.2.9
sys-devel/autoconf: 2.13, 2.59-r7
sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.5
sys-devel/binutils: 2.15.92.0.2-r8, 2.16.1
sys-devel/libtool: 1.5.18
virtual/os-headers: 2.6.11-r1
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O3 -march=athlon-xp -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config /usr/share/config /var/bind /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-O3 -march=athlon-xp -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig candy distlocks sandbox sfperms strict"
GENTOO_MIRRORS="ftp://pandemonium.tiscali.de/pub/gentoo/ ftp://gentoo.inode.at/source/ http://pandemonium.tiscali.de/pub/gentoo/"
LANG="de_DE"
LC_ALL="de_DE"
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="x86 X509 alsa apache2 apm arts avi bash-completion berkdb bitmap-fonts cdr crypt cups emboss encode fam floppyboot foomaticdb fortran gd gdbm gif gpm imlib ipv6 jpeg kde libg++ libwww logrotate mad mikmod motif mp3 mpeg multislot multitarget mysql nagios-dns nagios-game nagios-ntp nagios-ping nagios-ssh nas ncurses neXt netboot nls ntlm oggvorbis opengl oss pam pdflib perl png python qt quicktime readline samba sasl sdl slang spell ssl svga tcpd tiff truetype truetype-fonts type1-fonts unicode userlocales utf8 xml2 xmms xv zlib userland_GNU kernel_linux elibc_glibc"
Unset: ASFLAGS, CTARGET, LDFLAGS, LINGUAS, PORTDIR_OVERLAY
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Hope someone can help me ... i don't understand why the internet (also that traffic from the box itself to the i-net) is fast when I generate traffic in my lan !!
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the german dude with the broken english |
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think4urs11
Bodhisattva
Joined: 25 Jun 2003
Posts: 6659
Location: above the cloud
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| Posted: Tue Aug 09, 2005 6:44 am Post subject: |
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| adnoh wrote: | eth0 Link encap:Ethernet HWaddr 00:0A:E6:4E:3F:A0
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
eth1 Link encap:Ethernet HWaddr 00:40:F4:3B:71:50
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0 |
bad idea to have two different NIC in the same subnet (at least in most cases it is...)
Sure that this is correct in your case?
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Nothing is secure / Security is always a trade-off with usability / Do not assume anything / Trust no-one, nothing / Paranoia is your friend / Think for yourself |
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Anarcho
Advocate
Joined: 06 Jun 2004
Posts: 2970
Location: Germany
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| Posted: Tue Aug 09, 2005 7:11 am Post subject: |
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I would agree with Think4UrS11.
Look are your routing table and you see why it is not good to keep 2 NICs in one subnet.
Your routing table shows to routing entries for the same subnet with different outgoing NICs.
If I understand you correctly you only have the DSL Modem at eth1 and nothing else.
So you can take any IP-adress (to be more acurate: any of the reserved for homeuse) for this NIC, e.g. 192.168.55.66.
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...it's only Rock'n'Roll, but I like it! |
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adnoh
Tux's lil' helper
Joined: 21 Jul 2005
Posts: 120
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| Posted: Tue Aug 09, 2005 8:00 am Post subject: |
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I changed the IP of ETH1 just while I was playing around yesterday. I tested with an other IP-Address too but it was the same situation.
My default (when the box is started) is to just bring the ETH1 to the UP-State without an ip-address which work(ed) well for me all the time...
any thips else ?? 
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the german dude with the broken english |
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ph03n1x
l33t
Joined: 06 Feb 2003
Posts: 756
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| Posted: Tue Aug 09, 2005 8:39 am Post subject: |
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This is very weird I've never seen something like this except when hardware was damaged. Maybe try with a different new nic.
And if that doesn't help maybe your box got rooted and some binaries affected? Just a guess since this problem seems really weird to me... maybe run chkrootkit and rkhunter to at least make sure the binaries are ok. |
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think4urs11
Bodhisattva
Joined: 25 Jun 2003
Posts: 6659
Location: above the cloud
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| Posted: Tue Aug 09, 2005 6:13 pm Post subject: |
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further things you can check
- ACPI enabled? if yes - try to disable
- duplex/speed settings - use ethtool or mii-tools depending on your NIC
- name server problems?
- any iptables rules?
- cabling? try to exchange the cable between DSL and eth1 with one 'known as working'
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Nothing is secure / Security is always a trade-off with usability / Do not assume anything / Trust no-one, nothing / Paranoia is your friend / Think for yourself |
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adnoh
Tux's lil' helper
Joined: 21 Jul 2005
Posts: 120
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| Posted: Fri Aug 19, 2005 9:05 am Post subject: Solved |
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just 4 info:
it was a smashed nic ... strange effects .... 
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the german dude with the broken english |
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