problems about network settings

[loody]

Hi all:

2009/10/4 loody <miloody at gmail.com>:
> Dear all:
> I got 2 machines on the same switch.
> Everything, except ip and distributions, one is mythubuntu and another
> is Ubuntu with Gnome, is the same on these 2 machines, at least in my
> mind.
> But one can connect to the gatway but another cannot.
> I don't think it is due to different distribution, but I have compare
> everything I could on these 2 machines.
> ( I list ifconfig and route table at the end of letter)
>
> is there any tool or command could help me to know where the problem is?
> appreciate your help,
> miloody
>
> the setting of the fail one:
> eth0      Link encap:Ethernet  HWaddr 00:11:25:d3:8c:11
>          inet addr:172.20.87.209  Bcast:172.20.87.255  Mask:255.255.254.0
>          inet6 addr: fe80::211:25ff:fed3:8c11/64 Scope:Link
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          RX packets:163 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:178 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:10919 (10.9 KB)  TX bytes:89622 (89.6 KB)
>          Interrupt:16
>
> $ route
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
> 172.20.86.0     *               255.255.254.0   U     1      0        0 eth0
> link-local      *               255.255.0.0     U     1000   0        0 eth0
> default         172.20.87.254   0.0.0.0         UG    0      0        0 eth0
>
> the setting of the passing one
> eth0      Link encap:Ethernet  HWaddr 00:11:09:3f:c4:96
>          inet addr:172.20.87.211  Bcast:172.20.87.255  Mask:255.255.254.0
>          inet6 addr: fe80::211:9ff:fe3f:c496/64 Scope:Link
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          RX packets:4504 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:327 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:384149 (384.1 KB)  TX bytes:49258 (49.2 KB)
>          Interrupt:22
> $ route
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
> 172.20.86.0     *               255.255.254.0   U     1      0        0 eth0
> link-local      *               255.255.0.0     U     1000   0        0 eth0
> default         172.20.87.254   0.0.0.0         UG    0      0        0 eth0
>
Is it possible to save one network setting as some file format, like
txt, then restore it back on the other machine?
appreciate your help,
miloody