Iptables está desactivado en esta máquina.
[root@lorentz ~]# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination
Chain FORWARD (policy ACCEPT) target prot opt source destination
Chain OUTPUT (policy ACCEPT) target prot opt source destination
Solo eth1 [root@lorentz ~]# route -en Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 10.20.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1 0.0.0.0 10.20.1.12 0.0.0.0 UG 0 0 0 eth1
[root@lorentz ~]# ifconfig -a eth1 Link encap:Ethernet HWaddr 00:50:56:8A:D0:3C inet addr:10.20.2.24 Bcast:10.20.255.255 Mask:255.255.0.0 inet6 addr: fe80::250:56ff:fe8a:d03c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:385431 errors:0 dropped:0 overruns:0 frame:0 TX packets:16148 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:37555994 (35.8 MiB) TX bytes:1949316 (1.8 MiB)
eth3 Link encap:Ethernet HWaddr 00:50:56:8A:45:DE BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:6421 errors:0 dropped:0 overruns:0 frame:0 TX packets:294 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:646119 (630.9 KiB) TX bytes:49064 (47.9 KiB)
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Después de ifup eth3
[root@lorentz ~]# route -en Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 10.1.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth3 10.20.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth3 0.0.0.0 10.1.1.1 0.0.0.0 UG 0 0 0 eth3
[root@lorentz ~]# ifconfig -a eth1 Link encap:Ethernet HWaddr 00:50:56:8A:D0:3C inet addr:10.20.2.24 Bcast:10.20.255.255 Mask:255.255.0.0 inet6 addr: fe80::250:56ff:fe8a:d03c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:388473 errors:0 dropped:0 overruns:0 frame:0 TX packets:16181 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:37870282 (36.1 MiB) TX bytes:1954442 (1.8 MiB)
eth3 Link encap:Ethernet HWaddr 00:50:56:8A:45:DE inet addr:10.1.10.68 Bcast:10.1.255.255 Mask:255.255.0.0 inet6 addr: fe80::250:56ff:fe8a:45de/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1558 errors:0 dropped:0 overruns:0 frame:0 TX packets:128 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:156719 (153.0 KiB) TX bytes:15965 (15.5 KiB)
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Si que apunta a problemas con GW.
Un saludo,
Antonio MANOGUE
----- Mensaje original ----- | De: "Francesc Guitart" francesc.guitart@enise.fr | Para: centos-es@centos.org | Enviados: Miércoles, 20 de Marzo 2013 10:01:25 | Asunto: Re: [CentOS-es] Probelma con 2 tarjeta de red en CentOS6.3 | Hola, | -rn | Le 20/03/2013 09:24, Antonio Manogué Saiz a écrit : | > | > Buenos días. | > | > Tengo un problema que nunca me había pasado y con el que llevo un | > tiempo bloqueado. | > | > En un sistema (virtualizado con VMWare) CentOS6.3 tengo 1 tarjeta de | > red funcionando correctamente. Ahora necesito añadirle una segunda | > tarjeta de red. La tarjeta se instala correctamente según los | > registros que quedan en messages . La puedo configurar sin problemas | > desde system-config-network-tui . Cuando la activo con ifup ethX no | > me da ningún problema ni veo entradas en los logs que indiquen | > error, pero a los pocos segundos (2-3 seg) se pierde la conexión con | > la otra IP. Si hago un ifdown ethX y reinicio network vuelve a | > funcionar todo correctamente. De hw no parece ya que he probado con | > tarjetas diferentes y el comportamiento es el mismo. Las vmtools | > están actualizadas. | > | > Este es un tail del messages cuando he | > activado-desactivado-reiniciado y los ficheros de configuración de | > las tarjetas. La que está operativa es la eth1 y la que no me deja | > configurar es la eth3 | > | > [root@lorentz log]# tail -n 40 messages | > Mar 20 07:55:11 lorentz ntpd[1765]: Listening on interface #15 eth3, | > 10.1.10.68#123 Enabled | > Mar 20 07:55:28 lorentz ntpd[1765]: Deleting interface #14 eth3, | > fe80::250:56ff:fe8a:45de#123, interface stats: received=0, sent=0, | > dropped=0, active_time=17 secs | > Mar 20 07:55:28 lorentz ntpd[1765]: Deleting interface #15 eth3, | > 10.1.10.68#123, interface stats: received=0, sent=0, dropped=0, | > active_time=17 secs | > Mar 20 07:58:48 lorentz ntpd[1765]: synchronized to 10.1.2.54, | > stratum 3 | > Mar 20 08:00:22 lorentz ntpd[1765]: time reset -34.361615 s | > Mar 20 08:09:26 lorentz system-config-network[4381]: chmod 0644 | > //etc/sysconfig/networking/devices/ifcfg-eth1 | > Mar 20 08:09:26 lorentz system-config-network[4381]: chmod 0644 | > //etc/sysconfig/networking/devices/ifcfg-eth3 | > Mar 20 08:09:46 lorentz ntpd[1765]: synchronized to 10.1.2.54, | > stratum 3 | > Mar 20 09:16:39 lorentz system-config-network[4594]: chmod 0644 | > //etc/sysconfig/networking/devices/ifcfg-eth1 | > Mar 20 09:16:39 lorentz system-config-network[4594]: chmod 0644 | > //etc/sysconfig/networking/devices/ifcfg-eth3 | > Mar 20 09:17:07 lorentz kernel: lo: Disabled Privacy Extensions | > Mar 20 09:17:07 lorentz kernel: e1000: eth1 NIC Link is Up 1000 Mbps | > Full Duplex, Flow Control: None | > Mar 20 09:17:07 lorentz kernel: ADDRCONF(NETDEV_UP): eth1: link is | > not ready | > Mar 20 09:17:07 lorentz kernel: ADDRCONF(NETDEV_CHANGE): eth1: link | > becomes ready | > Mar 20 09:17:08 lorentz kernel: eth3: intr type 3, mode 0, 2 vectors | > allocated | > Mar 20 09:17:08 lorentz kernel: eth3: NIC Link is Up 10000 Mbps | > Mar 20 09:17:09 lorentz NET[4971]: | > /etc/sysconfig/network-scripts/ifup-post : updated /etc/resolv.conf | > Mar 20 09:17:12 lorentz ntpd[1765]: Listening on interface #16 eth3, | > fe80::250:56ff:fe8a:45de#123 Enabled | > Mar 20 09:17:12 lorentz ntpd[1765]: Listening on interface #17 eth3, | > 10.1.10.68#123 Enabled | > Mar 20 09:17:47 lorentz NET[5040]: | > /etc/sysconfig/network-scripts/ifdown-post : updated | > /etc/resolv.conf | > Mar 20 09:17:49 lorentz ntpd[1765]: Deleting interface #16 eth3, | > fe80::250:56ff:fe8a:45de#123, interface stats: received=0, sent=0, | > dropped=0, active_time=37 secs | > Mar 20 09:17:49 lorentz ntpd[1765]: Deleting interface #17 eth3, | > 10.1.10.68#123, interface stats: received=0, sent=0, dropped=0, | > active_time=37 secs | > Mar 20 09:18:12 lorentz kernel: lo: Disabled Privacy Extensions | > Mar 20 09:18:12 lorentz kernel: e1000: eth1 NIC Link is Up 1000 Mbps | > Full Duplex, Flow Control: None | > Mar 20 09:18:12 lorentz kernel: ADDRCONF(NETDEV_UP): eth1: link is | > not ready | > Mar 20 09:18:12 lorentz kernel: ADDRCONF(NETDEV_CHANGE): eth1: link | > becomes ready | > Mar 20 09:18:14 lorentz kernel: eth3: intr type 3, mode 0, 2 vectors | > allocated | > Mar 20 09:18:14 lorentz kernel: eth3: NIC Link is Up 10000 Mbps | > Mar 20 09:18:15 lorentz NET[5416]: | > /etc/sysconfig/network-scripts/ifup-post : updated /etc/resolv.conf | > Mar 20 09:18:17 lorentz ntpd[1765]: Listening on interface #18 eth3, | > fe80::250:56ff:fe8a:45de#123 Enabled | > Mar 20 09:18:17 lorentz ntpd[1765]: Listening on interface #19 eth3, | > 10.1.10.68#123 Enabled | > Mar 20 09:18:20 lorentz NET[5484]: | > /etc/sysconfig/network-scripts/ifdown-post : updated | > /etc/resolv.conf | > Mar 20 09:18:22 lorentz ntpd[1765]: Deleting interface #18 eth3, | > fe80::250:56ff:fe8a:45de#123, interface stats: received=0, sent=0, | > dropped=0, active_time=5 secs | > Mar 20 09:18:22 lorentz ntpd[1765]: Deleting interface #19 eth3, | > 10.1.10.68#123, interface stats: received=0, sent=0, dropped=0, | > active_time=5 secs | > Mar 20 09:18:44 lorentz kernel: lo: Disabled Privacy Extensions | > Mar 20 09:18:44 lorentz kernel: e1000: eth1 NIC Link is Up 1000 Mbps | > Full Duplex, Flow Control: None | > Mar 20 09:18:45 lorentz ntpd[1765]: Deleting interface #12 eth1, | > fe80::250:56ff:fe8a:d03c#123, interface stats: received=0, sent=0, | > dropped=0, active_time=5096 secs | > Mar 20 09:18:45 lorentz ntpd[1765]: Deleting interface #13 eth1, | > 10.20.2.24#123, interface stats: received=57, sent=57, dropped=0, | > active_time=5096 secs | > Mar 20 09:18:47 lorentz ntpd[1765]: Listening on interface #20 eth1, | > fe80::250:56ff:fe8a:d03c#123 Enabled | > Mar 20 09:18:47 lorentz ntpd[1765]: Listening on interface #21 eth1, | > 10.20.2.24#123 Enabled | > | > D EVICE= eth1 | > HWADDR=00:50:56:8a:d0:3c | > NM_CONTROLLED=no | > ONBOOT=yes | > IPADDR=10.20.2.24 | > BOOTPROTO=none | > NETMASK=255.255.0.0 | > DNS2=10.1.2.54 | > TYPE=Ethernet | > GATEWAY=10.20.1.12 | > DNS1=10.20.1.12 | > IPV6INIT=no | > USERCTL=no | > ~ | > | > DNS1=10.1.1.1 | > DEVICE=eth3 | > BOOTPROTO=none | > TYPE=Ethernet | > HWADDR=00:50:56:8a:45:de | > NM_CONTROLLED=no | > ONBOOT=no | > IPV6INIT=no | > USERCTL=no | > IPADDR=10.1.10.68 | > NETMASK=255.255.0.0 | > GATEWAY=10.1.1.1 | > ~ | | No sera un problema de enrutamiento? Puedes mandar la salida de | netstat | -rn antes y después de configurar eth3? | | Y iptables? no creo ya que en principio no añadir otra ethernet no | debería desconectar la primera, pero... Manda la salida de iptables -L | -n antes y después de configurar eth3. | | Y ya de paso, manda también la salida de ifconfig -a antes y después | de | configurar eth3. | | > | > Gracias por adelantado. | > | | De nada. | | -- | Francesc Guitart | | | | | _______________________________________________ | CentOS-es mailing list | CentOS-es@centos.org | http://lists.centos.org/mailman/listinfo/centos-es