[cisco-nas] problem with pptp to c827

[Bob Arthurs]

hello

i wonder if someone can help - i am trying to setup pptp tunnel to a cisco 
827 but it seems like the c827 does not recognize extended gre! any help is 
very much appreciated.

here is my debug-

cisco827#
5d10h: Vi2 PPP: Phase is DOWN, Setup
5d10h: %LINK-3-UPDOWN: Interface Virtual-Access2, changed state to up
5d10h: Vi2 PPP: Using set call direction
5d10h: Vi2 PPP: Treating connection as a callin
5d10h: Vi2 PPP: Phase is ESTABLISHING, Active Open
5d10h: Vi2 LCP: O CONFREQ [Closed] id 1 len 15
5d10h: Vi2 LCP:    AuthProto MS-CHAP (0x0305C22380)
5d10h: Vi2 LCP:    MagicNumber 0xCCDAC683 (0x0506CCDAC683)
5d10h: Vi2 PPTP/xGRE: O, dest 10.2.1.1, len 35, seq 1, ack 0
5d10h: IP: s=10.1.1.1 (local), d=10.2.1.1 (Dialer1), len 55, sending,
proto=47
5d10h: IP: s=10.2.1.1 (Dialer1), d=10.1.1.1 (Dialer1), len 57, rcvd 3,
proto=47
5d10h: IP: s=10.2.1.1 (Dialer1), d=10.1.1.1, len 57, unknown protocol,
proto=47
5d10h: IP: s=10.2.1.1 (Dialer1), d=10.1.1.1 (Dialer1), len 55, rcvd 3,
proto=47
5d10h: IP: s=10.2.1.1 (Dialer1), d=10.1.1.1, len 55, unknown protocol,
proto=47
5d10h: Vi2 LCP: TIMEout: State REQsent


please notice the 'unknown protocol' for prot 47 in icoming packets above. 
the client is a windows box - it has no problems setting up with other 
servers. also i have the same problem even if i change the ios on the c827.


here is my configuration-

vpdn enable
!
vpdn-group 1
! Default PPTP VPDN group
accept-dialin
  protocol pptp
  virtual-template 1
!



!
interface Virtual-Template1
ip unnumbered Loopback1
peer default ip address pool PPTP
ppp authentication ms-chap
!
interface ATM0
no ip address
no atm ilmi-keepalive
pvc 0/38
  encapsulation aal5mux ppp dialer
  dialer pool-member 1
!
bundle-enable
dsl operating-mode auto
!
interface Dialer1
ip address 10.1.1.1 255.255.255.248
ip nat outside
encapsulation ppp
dialer pool 1
no cdp enable
ppp authentication chap callin optional
ppp chap hostname cisco827
ppp chap password cisco
!


i guess it may be a problem with terminating a pptp on a dialer interface?

any help on this problem is much appreciated

bob

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