Unable to ping gateway & other Linux boxes on same network

msessom · 01-02-2013, 04:56 PM

I have a few Linux boxes set up on a 10.45.89.x subnet with the gateway being 10.45.89.1. On all of these, I'm unable to ping anything except 127.0.0.1. I'm wondering if I need to modify any of the routing tables or hosts file.

netstat -r output:

Code:

10.45.89.0   *   255.255.255.0    U
10.112.0.0    *    255.255.0.0    U
169.254.0.0    *    255.255.0.0    U
default    10.45.89.1    0.0.0.0    UG

/etc/hosts

Code:

127.0.0.1 localhost.localdomain  localhost
127.0.0.1 localhost.localdomain  localhost
9.37.253.154 rpt.rhn.linux.ul.com

/etc/resolv.conf

Code:

domain demolotus.com
namserver 127.0.0.1

/etc/sysconfig/network

Code:

NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=st852.demolotus.com

ip route show dev eth0

Code:

10.45.89.0/24  proto  kernel  scope  link  src  10.45.89.138
default via 10.45.89.1

ifconfig

Code:

eth0    Link encap:Ethernet  HWaddr 00:0C:29:01:28:CD
inet addr:10.45.89.138  Bcast:10.45.89.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1



eth0:0 Link encap:Ethernet HWaddr 00:0C:29:01:28:CD
inet addr:10.45.89.139  Bcast:10.45.89.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1

ip addr show dev eth0

Code:

2: etho0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:0c:29:01:28:cd brd ff:ff:ff:ff:ff:ff
inet 10.45.89.138/24 brd 10.45.89.255 scope global eth0
inet 10.45.89.139/24 brd 10.45.89.255 scope global secondary eth0:0

Any suggestions are appreciated. Thanks!

custangro · 01-02-2013, 05:17 PM

Judging by your ifconfig; you have two interfaces with the same IP address.

msessom · 01-02-2013, 06:05 PM

Sorry, that was a typo. eth0 is .138 and eth0:0 is .139. I've updated my question.

Quote:

Originally Posted by custangro

Judging by your ifconfig; you have two interfaces with the same IP address.