My problem is when i connected to the internet the internet is not connecting .
It will make down the whole network internet connection.
when i plug the ethernet cable to my centos 6.6 pc the whole network cannot access the internet.internet will down to whole network .but can be ping with my system but no internet connection.
Before a week i had beed using my system without any problem.
from a last 4 days this problem is happening.
I have given the configuration details of my system
[root@dhcppc0 Desktop]# ip a
Code:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 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,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 4c:72:b9:21:ba:e4 brd ff:ff:ff:ff:ff:ff
inet 192.168.5.15/24 brd 192.168.5.255 scope global eth0
inet6 fe80::4e72:b9ff:fe21:bae4/64 scope link
valid_lft forever preferred_lft forever
[root@dhcppc0 Desktop]# ip route
Code:
192.168.5.0/24 dev eth0 proto kernel scope link src 192.168.5.15
169.254.0.0/16 dev eth0 scope link metric 1002
default via 192.168.5.2 dev eth0
[root@dhcppc0 Desktop]# ping -I eth0 169.254.0.0
Code:
PING 169.254.0.0 (169.254.0.0) from 192.168.5.15 eth0: 56(84) bytes of data.
From 192.168.5.15 icmp_seq=2 Destination Host Unreachable
From 192.168.5.15 icmp_seq=3 Destination Host Unreachable
From 192.168.5.15 icmp_seq=4 Destination Host Unreachable
From 192.168.5.15 icmp_seq=6 Destination Host Unreachable
From 192.168.5.15 icmp_seq=7 Destination Host Unreachable
From 192.168.5.15 icmp_seq=8 Destination Host Unreachable
From 192.168.5.15 icmp_seq=10 Destination Host Unreachable
From 192.168.5.15 icmp_seq=11 Destination Host Unreachable
From 192.168.5.15 icmp_seq=12 Destination Host Unreachable
^Z
[3]+ Stopped ping -I eth0 169.254.0.0
[root@dhcppc0 Desktop]# traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
1 * * *
2 * * *
3 * * *
4 * * *
[root@localhost ~]# service network restart
Code:
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: Determining if ip address 192.168.5.15 is already in use for device eth0...
[ OK ]
[root@localhost ~]#vi /etc/resolv.conf
Code:
# Generated by NetworkManager
# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com
#vi /etc/sysconfig/network-scripts/ifcfg-eth0
Code:
DEVICE=eth0
TYPE=Ethernet
BOOTPROTO=none
NM_CONTROLLED=no
ONBOOT=yes
IPADDR=192.168.5.15
NETMASK=255.255.255.0
GATEWAY=192.168.5.2
HWADDR=4c:72:b9:21:ba:e4
IPV6INIT=no
USERCTL=no
[root@localhost ~]# vi /etc/sysconfig/network
Code:
NETWORKING=yes
HOSTNAME=localhost
my network manager configuration is
Code:
[root@localhost ~]# service NetworkManager start
Setting network parameters... [ OK ]
Starting NetworkManager daemon:
[root@localhost ~]# service NetworkManager status
NetworkManager (pid 1835) is running...
[root@localhost ~]# chkconfig network on
[root@localhost ~]# chkconfig --list | grep Network
NetworkManager 0:off 1:off 2:on 3:on 4:on 5:on 6:off
[root@localhost ~]#
please someone help me .....
I cannot analyze what is the problem..
please.