my config as follows
interface Tunnel5
description "" xxxxxx ""
bandwidth 1024
ip address a.a.a.a 255.255.255.252
ip mtu 1500
tunnel source b.b.b.b
tunnel destination k.k.k.k
!
interface FastEthernet0/0
ip address y.y.y.y 255.255.255.128
ip address b.b.b.b 255.255.255.240 secondary
ip nat inside
interface Serial1/0
description *** 2MBPS Link ***
bandwidth 2048
ip address z.z.z.z 255.255.255.252
ip accounting output-packets
ip nat outside
ip route 0.0.0.0 0.0.0.0 y.y.y.y-1
ip route w.w.w.w 255.255.255.224 Tunnel5
ip nat inside source static w.w.w.w y.y.y.y extendable
this static nat translations not working.Please help me to resolv this