[CentOS-es] Probelma con 2 tarjeta de red en CentOS6.3
Antonio Manogué Saiz
amanogue en sabeco.es
Mie Mar 20 09:19:57 UTC 2013
Iptables está desactivado en esta máquina.
[root en 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 en 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 en 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 en 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 en 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 en enise.fr>
| Para: centos-es en 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 en 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
|
|
|
|
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