URL: https://linuxfr.org/forums/linux-debutant/posts/connectivite-ip
Title: connectivité IP
Authors: jln
Date: 2014年03月05日T13:53:36+01:00
License: CC By-SA
Tags: 
Score: 0
Bonjour,
J'ai un problème de connectivité IP.
La machine 10.149.85.21 répond à toutes les demandes
ping, telnet, HTTPD, ... mais ne peut parler à aucune machine!
### Machine 10.149.85.21 ###
[root@localhost jln]# ifconfig
lo: flags=73<up,loopback,running> mtu 65536
 inet 127.0.0.1 netmask 255.0.0.0
 inet6 ::1 prefixlen 128 scopeid 0x10<host>
 loop txqueuelen 0 (Local Loopback)
 RX packets 2 bytes 140 (140.0 B)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets 2 bytes 140 (140.0 B)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
p3p1: flags=4163<up,broadcast,running,multicast> mtu 1500
 inet 10.149.85.21 netmask 255.255.255.0 broadcast 10.149.85.255
 inet6 fe80::210:5aff:fe69:4793 prefixlen 64 scopeid 0x20<link>
 ether 00:10:5a:69:47:93 txqueuelen 1000 (Ethernet)
 RX packets 142 bytes 9628 (9.4 KiB)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets 179 bytes 14230 (13.8 KiB)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@localhost jln]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default 10.149.85.30 0.0.0.0 UG 1024 0 0 p3p1
10.149.85.0 0.0.0.0 255.255.255.0 U 0 0 0 p3p1
[root@localhost jln]# ping -c 3 10.149.85.30
PING 10.149.85.30 (10.149.85.30) 56(84) bytes of data.
--- 10.149.85.30 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 1999ms
[root@localhost jln]# ping -c 3 10.149.85.21
PING 10.149.85.21 (10.149.85.21) 56(84) bytes of data.
64 bytes from 10.149.85.21: icmp_seq=1 ttl=64 time=0.032 ms
64 bytes from 10.149.85.21: icmp_seq=2 ttl=64 time=0.025 ms
64 bytes from 10.149.85.21: icmp_seq=3 ttl=64 time=0.028 ms
### De 10.149.85.30 vers 10.149.85.21 ###
[root@ns jln]# ping -c 3 10.149.85.21
PING 10.149.85.21 (10.149.85.21) 56(84) bytes of data.
64 bytes from 10.149.85.21: icmp_seq=1 ttl=64 time=0.485 ms
64 bytes from 10.149.85.21: icmp_seq=2 ttl=64 time=0.423 ms
64 bytes from 10.149.85.21: icmp_seq=3 ttl=64 time=0.437 ms
--- 10.149.85.21 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
Quelqu'un pourrait-il m'expliquer ce qui se passe?
Merci.
Bye,
Jean-Louis
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