Multi NIC and Multi IP problem

[he ccjj]

I have tow NIC eth0 and eth1,and two ip: a.b.c.d and a.b.c.e,with the
same gateway a.b.c.254
in my  /etc/network/interfaces:

auto lo
iface lo inet loopback

iface eth0 inet static
address a.b.c.d
netmask 255.255.255.0
gateway a.b.c.254


auto eth1
iface eth1 inet static
address a.b.c.e
netmask 255.255.255.0
gateway a.b.c.254

After reboot,It does'n work,

#route -n
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
202.114.71.0    0.0.0.0         255.255.255.0   U     0      0        0 eth0
202.114.71.0    0.0.0.0         255.255.255.0   U     0      0        0 eth1
0.0.0.0         202.114.71.254  0.0.0.0         UG    0      0        0 eth0
0.0.0.0         202.114.71.254  0.0.0.0         UG    0      0        0 eth1

I can't visit the internet and internet can't visit me!Why?How should
I write my /etc/network/interfaces?