[c-nsp] Help! I seem to have a problem.....

[Melvin C. Etheridge]

I'm using radius to assign an IP of x.x.156.254 to a PPPoA modem router.

I'm using

Cisco-avpair lcp:interface-config=ip unnumbered ethernet 1/0 (x.x.156.3)
Cisco-avpair ip:route=0.0.0.0 0.0.0.0 x.x.156.1
Framed-Address x.x.156.254

My core router has a IP of x.x.156.1 on Fast0/1

My Adsl router (nas box a 3640) has a IP of x.x.156.3 on e1/0
and x.x.31.3 on E0/0

Everything works fine for about 2-3 three hours then no traffic can pass yet 
the connection is still active.
I have do a reconnect with the PPPoA modem and everything starts fowing 
again.

Everything works fine if I use the default virtual-template interface which 
is set to ip unnumber looback1 (12.x.101.1) and assign the connection a ip 
of x.x.101.254.

Here's a clip of the config.


ip cef
ip address-pool dhcp-pool
virtual-profile virtual-template 1
vpdn enable
vpdn history failure table-size 50
!
vpdn-group 1
!
vpdn-group enia.net
 accept-dialin
  protocol l2tp
  virtual-template 1
 terminate-from hostname xxxxxxxxx
 source-ip 192.168.200.1
 lcp renegotiation always
 l2tp tunnel password 7 xxxxxxxxxxxxxx
!
!
interface Loopback1
 ip address x.x.101.1 255.255.255.0
!
interface Ethernet0/0
 ip address x.x.84.3 255.255.254.0
 ip access-group 131 in
 ip access-group 131 out
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip nbar protocol-discovery
 service-policy input p2p
 service-policy output p2p
 ip route-cache flow
 no ip mroute-cache
 ip policy route-map nachi-worm
 half-duplex
 no cdp enable
!
interface Ethernet1/0
 ip address x.x.156.3 255.255.254.0
 ip access-group 131 in
 ip access-group 131 out
 no ip redirects
 no ip unreachables
 ip directed-broadcast
 no ip proxy-arp
 ip route-cache flow
 no ip mroute-cache
 ip policy route-map nachi-worm
 half-duplex
 no cdp enable
!
 !
!
interface Virtual-Template1
 ip unnumbered Loopback1
 peer default ip address dhcp-pool adsl
 ppp authentication pap
 ppp ipcp dns x.x.84.2 x.x.84.5
 ppp ipcp mask 255.255.255.0
!

no ip classless
ip route 0.0.0.0 0.0.0.0 x.x.84.1

I puzzled????

Mel