eth0 and eth1 config not working

Discussion in 'Installation/Configuration' started by blunt, Dec 2, 2007.

  1. blunt

    blunt New Member

    I have two ethernet cards, both connected to the same router. I wanted one of the cards to have IP 192.168.1.10 (eth0) and the other to have 192.168.2.10 (eth1). I can access the server through ssh with both IPs, but if I turn off my eth0 (ifdown) I cannot access the server even with the IP of eth1. I don't understand why...

    I will leave my ifconfig output as well as my route output.

    [[email protected] ~]# ifconfig
    eth0 Link encap:Ethernet HWaddr 00:50:FC:3B:B8:44
    inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0
    inet6 addr: fe80::250:fcff:fe3b:b844/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:951393 errors:0 dropped:0 overruns:0 frame:0
    TX packets:738669 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:704824230 (672.1 MiB) TX bytes:128870361 (122.9 MiB)
    Interrupt:217

    eth1 Link encap:Ethernet HWaddr 00:13:D4:B9:FF:98
    inet addr:192.168.2.10 Bcast:192.168.2.255 Mask:255.255.255.0
    inet6 addr: fe80::213:d4ff:feb9:ff98/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:4814 errors:0 dropped:0 overruns:0 frame:0
    TX packets:368 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:397021 (387.7 KiB) TX bytes:18264 (17.8 KiB)
    Interrupt:225 Base address:0xa000

    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:729329 errors:0 dropped:0 overruns:0 frame:0
    TX packets:729329 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:289483959 (276.0 MiB) TX bytes:289483959 (276.0 MiB)

    venet0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
    UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1
    RX packets:208930 errors:0 dropped:0 overruns:0 frame:0
    TX packets:232110 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:22217125 (21.1 MiB) TX bytes:95662039 (91.2 MiB)

    [[email protected] ~]# route -n
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use Iface
    192.168.1.102 0.0.0.0 255.255.255.255 UH 0 0 0 venet0
    192.168.1.101 0.0.0.0 255.255.255.255 UH 0 0 0 venet0
    192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
    192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
    169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
    0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0

    Any hel is appreciated...

    thank you
     
  2. falko

    falko Super Moderator ISPConfig Developer

    I guess it's a routing problem because eth0 and eth1 are in different subnets.
    In what subnet is your client PC?
     
  3. blunt

    blunt New Member

    my client PC has subnet 255.255.0.0
     
  4. falko

    falko Super Moderator ISPConfig Developer

    That's the netmask. What IP address does your client PC have?
     
  5. blunt

    blunt New Member

    sorry i didn't understand your question right.
    my client PC address is 192.168.1.236
     
  6. falko

    falko Super Moderator ISPConfig Developer

    eth1 has 192.168.2.10 which is in a different subnet; that's why you can't connect to it when you disconnect eth0.
     
  7. blunt

    blunt New Member

    is there a way of getting it to work? the problem is that I had eth0 with ip 192.168.1.10 and eth1 with 192.168.1.20.

    Then I noticed that even with the eth1 cable unplugged, I could access the server through eth0 with IP 192.168.1.20...when I posted this on another forum, someone told me to give an ip to eth1 from another subnet...

    is there another way?
     
  8. thavaht

    thavaht New Member

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