Cisco2610撥號問題？

ot0827

我的cisco2610撥號后訪問局域網很正常，但不能訪問internet，訪問internet是通過10.185.16.253路由的。不知什么原因？2610的配置如下：

Current configuration:
!
version 11.3
service timestamps debug datetime
service timestamps log datetime
no service password-encryption
!
hostname 2610
!
enable secret 5 $1$76CX$R5h2oB/QI7qbX8tcWiJ63/
enable password 65421
!
username cd_2610 password 0 cisco2610
username user password 0 passwd
!
!
process-max-time 200
!
interface Ethernet0/0
ip address 10.185.16.14 255.255.254.0
ip access-group 101 in
!
interface Serial0/0
ip address 10.185.255.10 255.255.255.252
!
interface Serial0/1
ip address 10.185.255.10 255.255.255.252
!
interface Group-Async1
ip unnumbered Ethernet0/0
encapsulation ppp
ip tcp header-compression passive
async mode interactive
peer default ip address pool setup_pool
ppp authentication chap pap
group-range 33 48
!
router rip
version 2
network 10.0.0.0
!
router igrp 1
redistribute connected
network 10.0.0.0
!
router igrp 15
redistribute connected
network 10.0.0.0
!
ip local pool setup_pool 10.185.16.15 10.185.16.30
ip classless
ip route 0.0.0.0 0.0.0.0 10.185.16.253
!
access-list 101 permit ip host 10.185.16.6 any
access-list 101 permit ip host 10.185.16.99 any
access-list 101 deny   tcp 10.185.16.0 0.0.0.255 any eq www
access-list 101 deny   tcp 10.185.17.0 0.0.0.255 any eq www
access-list 101 permit ip 10.185.16.0 0.0.0.255 any
access-list 101 permit ip 10.185.17.0 0.0.0.255 any
dialer-list 1 protocol ip permit
dialer-list 1 protocol ipx permit
!
line con 0
line 33 48
autoselect during-login
autoselect ppp
login local
modem InOut
modem autoconfigure discovery
transport input all
flowcontrol hardware
line aux 0
line vty 0 4
password 65878
login
!
no scheduler allocate
end

never1984

10.185.16.253 ，這個缺省路由的網關從你的2600上可達嗎？