ISR4321 VDSL couldn't detect when configure mode auto

[Looi Siew Key]

Hi,

We have 1 router ISR 4321 which add ATM module into it.

Deploy with "controller vdsl 0/2/0" as virtual DSL interface referring to dialer 1 (to ISP).

When configure "operating mode auto" inside "controller vdsl 0/2/0" interface, it doesn't able to detect which ISP protocol is using.

Whenever configured using manual way can work, example like "operating mode adsl2+"

Only 1 of the branch causing this issue and temporary running using manual protocol configured. Other branch using auto mode works fine.

Configuration syntax in ISR 4321;

controller vdsl 0/2/0

     operating mode auto (this command will not appear after configured)

Firmware:

IOS XE v03.16.05.S - extended support release

[keglass · Accepted solution]

Looi Siew Key,

I recommend you also post this to the Cisco Support Community for more information and access to technical support.

https://supportforums.cisco.com/

I hope this helps.

Kelli Glass

Moderator for Cisco Customer Communities

[Looi Siew Key]

Hi Kelly,

Thanks for your update.