Re: Quelques pistes

J'ai pas de cable croisé mais le hub à toujours marché et tant que je reste dans le réseau local, tout va bien.

Comme je l'ai signalé dans le message original, j'ai vidé l'iptables de p de toute regle superflue (au cas ou le ralentissement venait de là)
p est un athlon XP à 1GHz d'apres /proc/cpuinfo, je pense pas que cela vienne de là

Rien rien vu d'inabituel dans le dmesg, le reste est là :

root@p:~# iptables-save
# Generated by iptables-save v1.3.1 on Fri Nov 11 22:15:55 2005
*filter
:INPUT ACCEPT [2145966:1201462017]
:FORWARD ACCEPT [57398:27447878]
:OUTPUT ACCEPT [2146884:779677376]
COMMIT
# Completed on Fri Nov 11 22:15:55 2005
# Generated by iptables-save v1.3.1 on Fri Nov 11 22:15:55 2005
*nat
:PREROUTING ACCEPT [9079:552580]
:POSTROUTING ACCEPT [34:2040]
:OUTPUT ACCEPT [972:59696]
-A POSTROUTING -j MASQUERADE
COMMIT
# Completed on Fri Nov 11 22:15:55 2005

root@p:~# route
Table de routage IP du noyau
Destination Passerelle Genmask Indic Metric Ref Use Iface
112.lnfny151.Fo * 255.255.255.255 UH 0 0 0 ppp0
192.168.1.0 * 255.255.255.0 U 0 0 0 eth1
localnet * 255.255.255.0 U 0 0 0 eth0
default 112.lnfny151.Fo 0.0.0.0 UG 0 0 0 ppp0

root@p:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: Yes
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000001 (1)
Link detected: yes

root@s:~# route
Table de routage IP du noyau
Destination Passerelle Genmask Indic Metric Ref Use Iface
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
default p 0.0.0.0 UG 0 0 0 eth0

root@s:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: Yes
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Current message level: 0x00000001 (1)
Link detected: yes


Pour tcpdump, et une iso téléchargée par p sur mir1.ovh.net :

root@p:~# tcpdump -vv -c 5 -i ppp0 host mir1.ovh.net
tcpdump: listening on ppp0, link-type LINUX_SLL (Linux cooked), capture size 96 bytes
22:44:10.487382 IP (tos 0x0, ttl 64, id 37668, offset 0, flags [DF], proto: TCP (6), length: 52) AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.54648 > mir1.ovh.net.www: ., cksum 0xc843 (correct), 2335623395:2335623395(0) ack 1693337964 win 23760 <nop,nop,timestamp 48575364 219837222>
22:44:10.510646 IP (tos 0x0, ttl 53, id 63525, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.54648: . 1:1441(1440) ack 0 win 5792 <nop,nop,timestamp 219837229 48575313>
22:44:10.512492 IP (tos 0x0, ttl 53, id 63526, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.54648: . 1441:2881(1440) ack 0 win 5792 <nop,nop,timestamp 219837229 48575313>
22:44:10.512538 IP (tos 0x0, ttl 64, id 37670, offset 0, flags [DF], proto: TCP (6), length: 52) AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.54648 > mir1.ovh.net.www: ., cksum 0xbce3 (correct), 0:0(0) ack 2881 win 23760 <nop,nop,timestamp 48575389 219837229>
22:44:10.516045 IP (tos 0x0, ttl 53, id 63527, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.54648: . 2881:4321(1440) ack 0 win 5792 <nop,nop,timestamp 219837229 48575318>
5 packets captured
5 packets received by filter
0 packets dropped by kernel

La meme iso téléchargée par s (qui en fait s'appelle shepp)
L'interface ppp (sur p)

root@p:~# tcpdump -vv -c 5 -i ppp0 host mir1.ovh.net
tcpdump: listening on ppp0, link-type LINUX_SLL (Linux cooked), capture size 96 bytes
22:46:37.846375 IP (tos 0x0, ttl 53, id 39886, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.47489: . 2274332459:2274333899(1440) ack 2941224887 win 5792 <nop,nop,timestamp 219851962 48601460>
22:46:37.848007 IP (tos 0x0, ttl 63, id 55690, offset 0, flags [DF], proto: TCP (6), length: 64) AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.47489 > mir1.ovh.net.www: ., cksum 0xa756 (correct), 1:1(0) ack 1440 win 16024 <nop,nop,timestamp 48601841 219851962,nop,nop,sack 1 {0:1440}>
22:46:37.922905 IP (tos 0x0, ttl 53, id 39887, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.47489: . 1440:2880(1440) ack 1 win 5792 <nop,nop,timestamp 219851969 48601841>
22:46:37.924795 IP (tos 0x0, ttl 63, id 55692, offset 0, flags [DF], proto: TCP (6), length: 52) AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.47489 > mir1.ovh.net.www: ., cksum 0x0a91 (correct), 1:1(0) ack 2880 win 16024 <nop,nop,timestamp 48601917 219851969>
22:46:37.924766 IP (tos 0x0, ttl 53, id 39888, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > AMontpellier-151-1-49-29.w83-197.abo.wanadoo.fr.47489: . 2880:4320(1440) ack 1 win 5792 <nop,nop,timestamp 219851969 48601841>
5 packets captured
5 packets received by filter
0 packets dropped by kernel

L'interface eth0 (sur p)
root@p:~# tcpdump -vv -c 5 -i eth0 host mir1.ovh.net
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
22:48:13.361353 IP (tos 0x0, ttl 52, id 40665, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > shepp.47489: . 2274850859:2274852299(1440) ack 2941224887 win 5792 <nop,nop,timestamp 219861513 48696920>
22:48:13.362949 IP (tos 0x0, ttl 64, id 56798, offset 0, flags [DF], proto: TCP (6), length: 64) shepp.47489 > mir1.ovh.net.www: ., cksum 0x5cce (correct), 1:1(0) ack 1440 win 16024 <nop,nop,timestamp 48697360 219861513,nop,nop,sack 1 {0:1440}>
22:48:13.437245 IP (tos 0x0, ttl 52, id 40666, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > shepp.47489: . 1440:2880(1440) ack 1 win 5792 <nop,nop,timestamp 219861520 48697360>
22:48:13.438830 IP (tos 0x0, ttl 64, id 56800, offset 0, flags [DF], proto: TCP (6), length: 52) shepp.47489 > mir1.ovh.net.www: ., cksum 0x9218 (correct), 1:1(0) ack 2880 win 16024 <nop,nop,timestamp 48697436 219861520>
22:48:13.439205 IP (tos 0x0, ttl 52, id 40667, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > shepp.47489: P 2880:4320(1440) ack 1 win 5792 <nop,nop,timestamp 219861520 48697360>
5 packets captured
5 packets received by filter
0 packets dropped by kernel

l'interface eth0 (sur s)
root@s:~ # tcpdump -vv -c 5 -i eth0 host mir1.ovh.net
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
22:50:04.936600 IP (tos 0x0, ttl 52, id 41593, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > shepp.47489: . 2275398059:2275399499(1440) ack 2941224887 win 5792 <nop,nop,timestamp 219873146 48813312>
22:50:04.949452 IP (tos 0x0, ttl 64, id 58080, offset 0, flags [DF], proto: TCP (6), length: 64) shepp.47489 > mir1.ovh.net.www: ., cksum 0x5c4c (correct), 1:1(0) ack 1440 win 16024 <nop,nop,timestamp 48813702 219873146,nop,nop,sack 1 {0:1440}>
22:50:05.025287 IP (tos 0x0, ttl 52, id 41594, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > shepp.47489: . 1440:2880(1440) ack 1 win 5792 <nop,nop,timestamp 219873155 48813702>
22:50:05.025381 IP (tos 0x0, ttl 64, id 58082, offset 0, flags [DF], proto: TCP (6), length: 52) shepp.47489 > mir1.ovh.net.www: ., cksum 0x4495 (correct), 1:1(0) ack 2880 win 16024 <nop,nop,timestamp 48813794 219873155>
22:50:05.343129 IP (tos 0x0, ttl 52, id 41596, offset 0, flags [DF], proto: TCP (6), length: 1492) mir1.ovh.net.www > shepp.47489: . 1440:2880(1440) ack 1 win 5792 <nop,nop,timestamp 219873187 48813702>
5 packets captured
12 packets received by filter
0 packets dropped by kernel