поднял PPPoE канал до прова как написано здесь http://www.cisco.com/en/US/tech/tk175/tk15/technologies_configuration_example09186a0080093fbf.shtml

канал поднимается, но через некоторое время падает наглухо и поднимается только если перезагрузить циску по питанию
deb pppoe error показывает следующее:

Unable to change if_input to Vi2,dropping packet R:0019.a951.0c1b L:000d.28dc.b628 Et0/0

#deb pppoe event
002662: .Aug 18 17:48:29.465:  Sending PADI: Interface = Ethernet0/0
002663: .Aug 18 17:48:29.465: PPPoE 0: I PADO  R:001c.0ec4.b019 L:000d.28dc.b628 Et0/0
002664: .Aug 18 17:48:29.465: PPPoE 0: I PADO  R:0019.a951.0c1b L:000d.28dc.b628 Et0/0
002665: .Aug 18 17:48:29.465: PPPoE 0: I PADO  R:001a.e38a.b819 L:000d.28dc.b628 Et0/0
002666: .Aug 18 17:48:29.465: PPPoE 0: I PADO  R:0014.f176.7419 L:000d.28dc.b628 Et0/0
002667: .Aug 18 17:48:29.501: PPPoE 0: I PADO  R:0019.0767.2419 L:000d.28dc.b628 Et0/0
002668: .Aug 18 17:48:31.516:  PPPOE: we've got our pado and the pado timer went off
002669: .Aug 18 17:48:31.516: OUT PADR from PPPoE Session
002670: .Aug 18 17:48:31.516: PPPoE 31280: I PADS  R:001c.0ec4.b019 L:000d.28dc.b628 Et0/0
002671: .Aug 18 17:48:31.520: IN PADS from PPPoE Session
002672: .Aug 18 17:48:31.524: %DIALER-6-BIND: Interface Vi2 bound to profile Di1
002673: .Aug 18 17:48:31.524: Vi2 Debug: Condition 3, interface Di1 triggered, count 1
002674: .Aug 18 17:48:31.524: PPPoE: Virtual Access interface obtained.
002675: .Aug 18 17:48:31.524: PPPoE : encap string prepared
002676: .Aug 18 17:48:31.524: [0]PPPoE 31280: data path set to Virtual Acess
002677: .Aug 18 17:48:31.528: %LINK-3-UPDOWN: Interface Virtual-Access2, changed state to up
002678: .Aug 18 17:48:51.649: PPPoE 31280: I PADT  R:001c.0ec4.b019 L:000d.28dc.b628 Et0/0
002679: .Aug 18 17:48:51.649:  PPPoE : Shutting down client session
002680: .Aug 18 17:48:51.649: [0]PPPoE 31280: O PADT  R:001c.0ec4.b019 L:000d.28dc.b628 Et0/0
002681: .Aug 18 17:48:51.653: %DIALER-6-UNBIND: Interface Vi2 unbound from profile Di1
002682: .Aug 18 17:48:51.657: %LINK-3-UPDOWN: Interface Virtual-Access2, changed state to down

а вот конфиг

vpdn enabled

interface Ethernet0/0
no ip address
ip virtual-reassembly
half-duplex
pppoe enable
pppoe-client dial-pool-number 2
no cdp enable
!
interface FastEthernet0/0
ip address 10.126.9.254 255.255.255.0
ip nat inside
ip virtual-reassembly
no ip mroute-cache
speed auto
no cdp enable
h323-gateway voip bind srcaddr 10.126.9.254
!
interface Dialer1
mtu 1492
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 2
dialer-group 2
no cdp enable
ppp authentication chap callin
ppp chap hostname v40879134
ppp chap password 7 095E57511F0816060D
crypto map remoto
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
no ip http server
ip http secure-server
ip http path flash:
!
ip nat inside source list nat interface Dialer1 overload

вот я и думаю - проблема в моем конфиге или у прова? (у него тоже циска стоит)