pinging problem on 2NIC machine

Hello,
I have Local interfaces are configured as
[root@localhost root]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:08:A1:43:61:F5
inet addr:10.0.1.100 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:240 (240.0 b)
Interrupt:9 Base address:0xbc00

eth1 Link encap:Ethernet HWaddr 00:80:48:C3:11:94
inet addr:10.0.1.200 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:915 (915.0 b) TX bytes:420 (420.0 b)
Interrupt:11 Base address:0xdc00

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:784 (784.0 b) TX bytes:784 (784.0 b)


and Routing table
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
Use Iface
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0
0 eth1
10.0.0.0 0.0.0.0 255.0.0.0 U 0 0
0 eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0
0 lo
0.0.0.0 10.0.1.100 0.0.0.0 UG 0 0
0 eth0


When i ifdown eth1 at start in rc.local so that it will not start by
default my configuration for kernel routing table is
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
Use Iface
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0
0 lo
0.0.0.0 10.0.1.100 0.0.0.0 UG 0 0
0 eth0

I want to make eth0 alone work by successfully pinging to
another pc which is connected by crossover wire. what cheages shoul i
do? I tried with
route add -net 0.0.0.0 netmask 0.0.0.0 gw 10.0.1.100
but it fails with error
SIOCADDRT: Network is unreachable

Then i up eth1 and my routing table is as given above. then i
give following commands
route del -net 0.0.0.0 netmask 0.0.0.0 gw 10.0.1.100
route add -net 0.0.0.0 netmask 0.0.0.0 gw 10.0.2.100 //10.0.2.100 is
eth0 of other pc

but besides that i get following erorros
ping 10.0.2.100
PING 10.0.2.100 (10.0.2.100) 56(84) bytes of data.
From 10.0.1.200 icmp_seq=1 Destination Host Unreachable
From 10.0.1.200 icmp_seq=2 Destination Host Unreachable
From 10.0.1.200 icmp_seq=3 Destination Host Unreachable

On 2005-04-06, kernel.lover <(E-Mail Removed)> wrote:
> eth0 Link encap:Ethernet HWaddr 00:08:A1:43:61:F5
> inet addr:10.0.1.100 Bcast:10.255.255.255 Mask:255.0.0.0

> eth1 Link encap:Ethernet HWaddr 00:80:48:C3:11:94
> inet addr:10.0.1.200 Bcast:10.255.255.255 Mask:255.0.0.0

So, both interfaces are in the same subnet.

> 10.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 eth1

But only eth1 is used for 10.x.x.x network

> 0.0.0.0 10.0.1.100 0.0.0.0 UG 0 0 0 eth0

And you configured your own interface to be the gateway.

> When i ifdown eth1 at start in rc.local so that it will not start by
> default my configuration for kernel routing table is

> 0.0.0.0 10.0.1.100 0.0.0.0 UG 0 0 0 eth0

Like before, but now you don't have a LAN anymore.

> I want to make eth0 alone work by successfully pinging to
> another pc which is connected by crossover wire.

Then tell him that _there_is_ a network over there. Get rid of the
gateway (that is incorrect)

route del default gw 10.0.1.100

And re-enable the LAN

route add -net 10.0.0.0 netmask 255.0.0.0 eth0

Davide

--
Q: What is the difference between Jurassic Park and Microsoft?
A: One is an over-rated high tech theme park based on prehistoric information
and populated mostly by dinosaurs, the other is a Steven Spielberg movie.

In comp.os.linux.networking Davide Bianchi <(E-Mail Removed)>:
> On 2005-04-06, kernel.lover <(E-Mail Removed)> wrote:
>> eth0 Link encap:Ethernet HWaddr 00:08:A1:43:61:F5
>> inet addr:10.0.1.100 Bcast:10.255.255.255 Mask:255.0.0.0

>> eth1 Link encap:Ethernet HWaddr 00:80:48:C3:11:94
>> inet addr:10.0.1.200 Bcast:10.255.255.255 Mask:255.0.0.0

> So, both interfaces are in the same subnet.

Looks like and that's the problem, it doesn't work out until you
setup the bonding driver for the devices. Looking for bonding.txt
in the kernel "Documentation" dir should tell how to utilize.

[..]


--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
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