Harald, try this:
Fe0/0 -> for example IP LAN 10.0.1.254/24
Fe0/1 -> for example IP LAN 172.16.0.254/24
Configuring DHCP in Cisco 2612 for FE0/0:
ip dhcp excluded-address 10.0.1.X 10.0.1.X'
ip dhcp excluded-address 10.0.1.Y 10.0.1.Y'
!
ip dhcp pool HERALD1 network 10.0.1.0 255.255.255.0
default-router 10.0.1.254
lease 30
!
interface FastEthernet0/0
ip address 10.0.1.254 255.255.255.0
For the F0/1 is the same.
Fe0/0 -> for example IP LAN 10.0.1.254/24
Fe0/1 -> for example IP LAN 172.16.0.254/24
Configuring DHCP in Cisco 2612 for FE0/0:
ip dhcp excluded-address 172.16.0.X 172.16.0.X'
ip dhcp excluded-address 172.16.0.Y 172.16.0.Y'
!
ip dhcp pool HERALD2 network 172.16.0.0 255.255.255.0
default-router 172.16.0.254
lease 30
!
interface FastEthernet0/1
ip address 172.16.0.254 255.255.255.0