各位看看我的2501配置错在哪里，很奇怪的。...

各位看看我的2501配置错在哪里
ping以太网口通，ping s0就不通而且不认ip nat inside和ip nat outside命令大虾帮看看哪有问题，多谢：


Using 802 out of 32762 bytes                           
!
version 11.2            
service config              
no service password-encryption                              
no service udp-small-servers
no service tcp-small-servers
!
hostname zj
!
enable secret 5 $1$oF6/$.Gpc7DDdHTGSRowzYIhlP0
enable password 2501
!
ip subnet-zero
no ip domain-lookup
!
interface Ethernet0
description connected to ethernetlan
ip address 172.17.50.5 255.255.255.0
no cdp enable
!
interface Serial0
description connected to internet
ip address 219.159.69.6 255.255.255.248
bandwidth 1024
!
interface Serial1
no ip address
shutdown
no cdp enable
!
router rip
version 2
passive-interface Serial0
network 172.17.0.0
network 219.159.69.0
no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0
snmp-server community public RO
!
line con 0
exec-timeout 15 0
line aux 0
line vty 0 4
password 2501
login
!
end