simple ping; pinging 101

[Ow Mun Heng]

On Wed, 2005-07-06 at 04:40 -0700, 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.
> 

I seriously suspect it's a NIC issue. Dlink  is using realtek 8139
driver yes? This one has cause me un-due pain.

To be sure.. switch the cables or switch the IPs (better)

> 
> arrakis eth0           192.168.0.100
> arrakis eth1           192.168.0.101
> caladan eth0           192.168.0.102

> [root at 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


Why is there no default route?? 
>