Yesterday I walked into a problem that the Cisco ISR 897VA was rebooted due to a power failure in the building. There was a preload update of the IOS software. The Software which was preloaded were: c800-universalk9-mz.SPA.156-2.T1.bin.
After the reboot, the router came up. but there was not a proper connection. After checking that the software failure went into an authentication failure. I supposed it should be something with the compatibility of the software on the Cisco Device and the hardware of Orange France.
The only solution, in this case, was to downgrade back to the following software version: c800-universalk9-mz.SPA.156-3.M7.bin
Perhaps Orange FR is able to solve this issue. As customers want to have their own network device instead of the live box.
Notification of the problem there was a Carrier detect, but there was no PPP authentication possibility.
What does the config look like?
The configuration was working prior the update but after an software update the communication between the cisco device and orange authentication servers didn’t work.
there was a CD light green. but not PPP light which I was expecting.
controller VDSL 0
firmware filename flash:vdsl.bin-A2pv6C038k1
interface ATM0
no ip address
no atm ilmi-keepalive
pvc 8/35
encapsulation aal5snap
protocol ppp dialer
dialer pool-member 1
interface Dialer1
no cdp enable
ip address negotiated
no ip redirects
no ip unreachables
no ip proxy-arp
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap callin
ppp chap hostname
ppp chap password
just for the note there was no configuration change prior the update or after the upgrade was done.