a two interfaces. SuSE 9.3

Hello. My PC have a two ethernet interfaces. Both are connected to one network (/24) by two ports of Catalyst. The eth0 have IP-address 1.1.1.1 and eth1 - 1.1.1.2 I need to see ALL packets from and to 1.1.1.1 address in eth0, also ALL packets from|to 1.1.1.2 in eth1. Now, many packets from|to 1.1.1.2 I can see by "tcpdump -i eth0" (not in eth1). Do you know special setting in network configuration of SuSE_9.3 to separate a traffic by interfaces? Thank you. Oss.