Does the ASR9k support LNS configuration. From some old and new information I’ve found it looks like it only supports the LAC side of the L2tp tunnel, I hope that’s not the case.
This is a 3 year old discussion that says no
we are currently runing 6.4.2, in the 6.4.2 BNG manual it gives you configuration instruction on how to configure it as a LAC but just says the LNS is provided by the ISP
The hand-off task, from the carrier to the ISP, is implemented by Layer 2 Tunneling Protocol (L2TP)
or Layer 3 Virtual Private Networking (VPN). L2TP requires two distinct network components: