[c-nsp] cisco as pptp client

[ultramajestic]

Hi,

I have here a 1841 with IOS:

My schema here is:
VPN3000 <> DSL Router (doing NAT) <> Windows Server PC as PPTP client
(NAT) <> LAN

Yeah, I know 2 boxes doing NAT, some ports and gre protocol forwarded to
the windows server... no commments :-P

Well, the plan is to replace the DSL router and the windows pc with the
1841 working as PPTP client of the vpn3000.

I have this configuration loaded:

!
vpdn-group 1
 request-dialin
  protocol pptp
  rotary-group 0
 initiate-to ip 1.1.1.1
 pptp tunnel echo 10
!
interface Dialer0
 ip address 10.10.10.1 255.255.255.240
 ip pim dense-mode
 ip nat outside
 ip virtual-reassembly
 encapsulation ppp
 dialer in-band
 dialer idle-timeout 0
 dialer string 123
 dialer vpdn
 dialer-group 1
 keepalive 7200
 no cdp enable
 ppp pfc local request
 ppp pfc remote apply
 ppp encrypt mppe auto
 ppp chap hostname supervpn
 ppp chap password xxxxxxx

For some reason -no idea yet- the connection seems to run, but, after
the dialer0 is UP and the VI1 is UP, 2 or 3 seconds later, the VI1 comes
DOWN.

Is anyone here with experience with this configuration?

Thanks