AJUDA MULTILINK

Boa noite a todos, esout com um grade problema aqui, tenho 2 links da oi de 2mbps cada e comprei um roteador cisco 1751v, pedi a oi para balancear os links por multilink ppp. Segundo a oi os links estao balanceados mas minha multilink so fica down, se alguem puder me ajudar, segue a conf do meu roter.
Building configuration...
Current configuration : 3117 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
resource policy
!
memory-size iomem 15
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
no ip source-route
!
no ip dhcp use vrf connected
!
no ip cef
no ip bootp server
no ip ips deny-action ips-interface
ip multicast-routing
!
!
interface Multilink1
ip address 200.xxx.xxx.246 255.255.255.252
no ip mroute-cache
no cdp enable
ppp multilink
ppp multilink group 1
!
interface FastEthernet0/0
ip address 200.xxx.xxx.25 255.255.255.248
no ip redirects
ip nat inside
ip virtual-reassembly
speed auto
no cdp enable
!
interface Serial0/0
bandwidth 2048
no ip address
no ip redirects
no ip unreachables
encapsulation ppp
no ip mroute-cache
no fair-queue
no cdp enable
ppp multilink
ppp multilink group 1
!
interface Serial0/1
bandwidth 2048
no ip address
no ip redirects
no ip unreachables
encapsulation ppp
no ip mroute-cache
no fair-queue
no cdp enable
ppp multilink
ppp multilink group 1
!
interface Serial1/0
no ip address
shutdown
!
interface Serial1/1
no ip address
shutdown
!
no ip classless
ip route 0.0.0.0 0.0.0.0 200.xxx.xxx.245
no ip http server
no ip http secure-server
!
no cdp run
!
control-plane
!
gateway
timer receive-rtp 1200
!

Deu certo aqui, a confg. estava certo so faltava reiniciar o router.

Iria lhe retornar dizendo que não via problema na conf e sim se houvesse seriam nas rotas, mas como já funcionou beleza