how to configure a router

Hello everybody,
 
I have an ADSL connection. Yesterday i've bought a USRobotics ADSL2+Ethernet/USB Router and now i'm using it via Ethernet under Vista. I've configured it through the Web (by typing 192.168.2.1) and under Windows Vista it works great,but not with FreeBSD,because this ip address is not reachable.When i use the ppp -ddial to call the connection,it works good and it builds a tun0 interface,but there is no ip address associated with it,as you can see :

ppp -ddial name_connection

loading /lib/libalias_cuseeme.so
loading /lib/libalias_ftp.so
loading /lib/libalias_irc.so
loading /lib/libalias_nbt.so
loading /lib/libalias_pptp.so
loading /lib/libalias_skinny.so
loading /lib/libalias_smedia.so
working in ddial mode
using interface: tun0

ifconfig

bge0 : flags=8843<up,broadcast,running,simplex,multicast> metric 0 mtu 1500
           options=9b<rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum>
           ether 0 0:16:17:ac:e5:57
           media : ethernet autoselect (100 basetx <full-duplex>)
           status : active

plip0: flags=108810 <pointtopoint,simplex,multicast,needsgiant> metric 0 mtu 1500

lo0 : flags=8049 <up,loopback,running,multicast> metric 0 mtu 16384
       inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
       inet ::1 prefix len 128
       inet 127.0.0.1 netmask 0xff000000

tun0 : flags=805: <up,pointtopoint,running,multicast> metric 0 mtu 1500
         opened by pid 1057
 
what should i do to use this router under FreeBSD ? Thanks.Start Free Trial