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Full Discussion: No IP Address??
Operating Systems Linux Red Hat No IP Address?? Post 302902604 by fedora18 on Wednesday 21st of May 2014 09:51:43 AM
Old 05-21-2014
So I set a static IP for eth0 but no luck. Pinging the specified address from another computer wired through an ethernet cable showed nothing.

I am having another issue now in that I cannot get the computer to assign any IP...not sure what happened.

To provide some more information on the scenario here are some outputs:

$ip addr show
Code:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
    link/ether 00:15:b7:d8:60:52 brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 00:19:d2:42:5e:ac brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.111/24 brd 192.168.1.255 scope global wlan0
    inet6 fe80::219:d2ff:fe42:5eac/64 scope link 
       valid_lft forever preferred_lft forever
4: sit0: <NOARP> mtu 1480 qdisc noop state DOWN 
    link/sit 0.0.0.0 brd 0.0.0.0

$cat /etc/sysconfig/networking/devices/ifcfg-eth0
Code:
DEVICE="eth0"
BOOTPROTO="static"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
IPADDR=10.0.0.1
NETMASK=255.255.255.0
BROADCAST=192.168.1.255
NETWORK=192.168.1.0
GATEWAY=10.0.0.250
PEERDNS="no"

$cat /etc/sysconfig/network-scripts/ifcfg-eth0
Code:
DEVICE="eth0"
BOOTPROTO="static"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
IPADDR=10.0.0.1
NETMASK=255.255.255.0
BROADCAST=192.168.1.255
NETWORK=192.168.1.0
GATEWAY=10.0.0.250
PEERDNS="no"

I have configured my program to run a server application that opens a socket and listens for incoming connections on a given port.

The client onthe other computer trying to connect to an IP on that port. Now, I am assuming that I want to be trying to connect to 10.0.0.1?

Thanks

---------- Post updated at 08:51 AM ---------- Previous update was at 08:46 AM ----------

Oh and one more ouput that may be helpful:

$/sbin/ifconfig -a

Code:
eth0      Link encap:Ethernet  HWaddr 00:15:B7:D8:60:52  
          BROADCAST MULTICAST  MTU:1500  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:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:16 Memory:ffce0000-ffd00000 

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:48 errors:0 dropped:0 overruns:0 frame:0
          TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:3760 (3.6 KiB)  TX bytes:3760 (3.6 KiB)

sit0      Link encap:IPv6-in-IPv4  
          NOARP  MTU:1480  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)

wlan0     Link encap:Ethernet  HWaddr 00:19:D2:42:5E:AC  
          inet addr:192.168.1.111  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::219:d2ff:fe42:5eac/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4403 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3475 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2156150 (2.0 MiB)  TX bytes:770728 (752.6 KiB)

Last edited by Corona688; 05-21-2014 at 12:09 PM..
 

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