If you are defining backup interface command under the serial interface then you wont be able to manually dial out the isdn interface.
Also when doing a normal routine test by making the serial interface manually shutdown you wont be able to test the bri coz the BRI interface will also go down (because of the command configured under the primary interface)..
I would suggest to change the ip route pointing towards your Bri interface instead of pointing towards the next hop ip.
once you are done with that then remove the backup command under the serial interface and check..
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...