this message appears because the auto-configuration of ATM addresses (NSAP) is failing.
By default a router has no network prefix but only the host specific part. So in order to have a complete NSAP address it tries to "ask" the switch through ILMI about the prefix (configured per ATM switch).
Obviously there is no ILMI PVC defined so the request can not be sent.
We have the exact same issue with an 877 router connected to a Telefonica ADSL2+ line in Spain.
After searching, it appear other people have the same issue but nobody seems to have an answer. We tried the "disable-ilmi-enterprise-traps" hidden command but it doesnt appear to be supported on the 877.
When Telefonica sent us the configuration details of the new line they included a gestión IP address which is management IP in English.
We then shutdown the ilmi completely since it simply wasnt working in any modes and added the management IP address as a secondary on ATM0. We then did a ping to the management IP addresses broadcast range. We got a response back from a previously unknown IP address.
We then added that IP address to the protocol of the atm pvc and set it as the default route as such
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...