How are you selecting to ping via eth0 or eth1? It seems to be that in
both cases your ping would have chosen eth0. Yet the 2nd case fails.
Are you selectively pulling out physically the network cable to "select"
the network interface to use? This is not going to work!
Regards,
.lzs
--
http://zitseng.com/
THUFIR HAWAT wrote:
two computers, arrakis and caladan, are
connected with some standard RJ45 Cat 5e cable
and a hub. arrakis can ping caladan from eth0.
arrakis cannot ping caladan from eth1.
what's wrong with arrakis eth1, please?
I'm 99.999% sure it's not a hardware problem.
eth0 is built-in to the motherboard,
eth1 is a D-Link NIC.
arrakis eth0 192.168.0.100
arrakis eth1 192.168.0.101
caladan eth0 192.168.0.102
terminal stuff from arrakis:
[root@arrakis init.d]# echo "arrakis eth0 pinging caladan eth0"
arrakis eth0 pinging caladan eth0
[root@arrakis init.d]# ./network restart
Shutting down interface eth0: [ OK ]
Shutting down interface eth1: [ OK ]
Shutting down loopback interface: [ OK ]
Disabling IPv4 packet forwarding: [ OK ]
Setting network parameters: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
Bringing up interface eth1: [ OK ]
[root@arrakis init.d]# ping 192.168.0.102
PING 192.168.0.102 (192.168.0.102) 56(84) bytes of data.
64 bytes from 192.168.0.102: icmp_seq=0 ttl=128 time=1.33 ms
64 bytes from 192.168.0.102: icmp_seq=1 ttl=128 time=0.465 ms
64 bytes from 192.168.0.102: icmp_seq=2 ttl=128 time=0.464 ms
64 bytes from 192.168.0.102: icmp_seq=3 ttl=128 time=0.472 ms
64 bytes from 192.168.0.102: icmp_seq=4 ttl=128 time=0.466 ms
--- 192.168.0.102 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4028ms
rtt min/avg/max/mdev = 0.464/0.641/1.339/0.349 ms, pipe 2
[root@arrakis init.d]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# built-in
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
HOSTNAME=arrakis
#HWADDR=00:0D:88:37:FA:22
NETMASK=255.255.255.0
IPADDR=192.168.0.100
USERCTL=yes
PEERDNS=yes
TYPE=Ethernet
IPV6INIT=yes
[root@arrakis init.d]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
# D-Link System Inc RTL8139 Ethernet
DEVICE=eth1
ONBOOT=yes
BOOTPROTO=none
HOSTNAME=arrakis
HWADDR=00:0D:88:37:FA:22
NETMASK=255.255.255.0
IPADDR=192.168.0.101
USERCTL=yes
PEERDNS=yes
TYPE=Ethernet
IPV6INIT=yes
[root@arrakis init.d]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0A:E6:A0:24:27
inet addr:192.168.0.100 Bcast:192.168.0.255
Mask:255.255.255.0
inet6 addr: fe80::20a:e6ff:fea0:2427/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:123 errors:6 dropped:0 overruns:0 frame:6
TX packets:62 errors:0 dropped:0 overruns:0 carrier:0
collisions:21 txqueuelen:1000
RX bytes:15378 (15.0 KiB) TX bytes:4144 (4.0 KiB)
Interrupt:5 Base address:0xd400
eth1 Link encap:Ethernet HWaddr 00:0D:88:37:FA:22
inet addr:192.168.0.101 Bcast:192.168.0.255
Mask:255.255.255.0
inet6 addr: fe80::20d:88ff:fe37:fa22/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:45 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:3090 (3.0 KiB)
Interrupt:5 Base address:0xd000
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:108 errors:0 dropped:0 overruns:0 frame:0
TX packets:108 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:8528 (8.3 KiB) TX bytes:8528 (8.3 KiB)
[root@arrakis init.d]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.0.0 * 255.255.255.0 U 0 0 0
eth0
192.168.0.0 * 255.255.255.0 U 0 0 0
eth1
169.254.0.0 * 255.255.0.0 U 0 0 0
eth1
[root@arrakis init.d]#
[root@arrakis init.d]# echo "arrakis eth1 pinging caladan eth0"
arrakis eth1 pinging caladan eth0
[root@arrakis init.d]# ./network restart
Shutting down interface eth0: [ OK ]
Shutting down interface eth1: [ OK ]
Shutting down loopback interface: [ OK ]
Disabling IPv4 packet forwarding: [ OK ]
Setting network parameters: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
Bringing up interface eth1: [ OK ]
[root@arrakis init.d]# ping 192.168.0.102
PING 192.168.0.102 (192.168.0.102) 56(84) bytes of data.
From 192.168.0.100 icmp_seq=1 Destination Host Unreachable
From 192.168.0.100 icmp_seq=2 Destination Host Unreachable
From 192.168.0.100 icmp_seq=3 Destination Host Unreachable
From 192.168.0.100 icmp_seq=5 Destination Host Unreachable
From 192.168.0.100 icmp_seq=6 Destination Host Unreachable
From 192.168.0.100 icmp_seq=7 Destination Host Unreachable
--- 192.168.0.102 ping statistics ---
8 packets transmitted, 0 received, +6 errors, 100% packet loss, time
6999ms
, pipe 4
[root@arrakis init.d]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# built-in
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
HOSTNAME=arrakis
#HWADDR=00:0D:88:37:FA:22
NETMASK=255.255.255.0
IPADDR=192.168.0.100
USERCTL=yes
PEERDNS=yes
TYPE=Ethernet
IPV6INIT=yes
[root@arrakis init.d]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
# D-Link System Inc RTL8139 Ethernet
DEVICE=eth1
ONBOOT=yes
BOOTPROTO=none
HOSTNAME=arrakis
HWADDR=00:0D:88:37:FA:22
NETMASK=255.255.255.0
IPADDR=192.168.0.101
USERCTL=yes
PEERDNS=yes
TYPE=Ethernet
IPV6INIT=yes
[root@arrakis init.d]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0A:E6:A0:24:27
inet addr:192.168.0.100 Bcast:192.168.0.255
Mask:255.255.255.0
inet6 addr: fe80::20a:e6ff:fea0:2427/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:123 errors:6 dropped:0 overruns:0 frame:6
TX packets:76 errors:0 dropped:0 overruns:0 carrier:0
collisions:21 txqueuelen:1000
RX bytes:15378 (15.0 KiB) TX bytes:4900 (4.7 KiB)
Interrupt:5 Base address:0xd400
eth1 Link encap:Ethernet HWaddr 00:0D:88:37:FA:22
inet addr:192.168.0.101 Bcast:192.168.0.255
Mask:255.255.255.0
inet6 addr: fe80::20d:88ff:fe37:fa22/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:54 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:3708 (3.6 KiB)
Interrupt:5 Base address:0xd000
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:114 errors:0 dropped:0 overruns:0 frame:0
TX packets:114 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9200 (8.9 KiB) TX bytes:9200 (8.9 KiB)
[root@arrakis init.d]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.0.0 * 255.255.255.0 U 0 0 0
eth0
192.168.0.0 * 255.255.255.0 U 0 0 0
eth1
169.254.0.0 * 255.255.0.0 U 0 0 0
eth1
[root@arrakis init.d]#
links:
arrakis mother board:
<http://www.ecsusa.com/downloads/manual_k7s.html>
eth1 NIC on arrakis:
<http://www.dlink.ca/product.php?PID=124>
thanks,
Thufir
