You got to remind that we still have the rule of thumb in OSPF about loop prevention that states that Area 0 must be the center of the universe, all of the other areas need to connect to Area 0 (You can use a virtual-link to prevent this)
Now, what's up with The OSPF area Transit?
Well basically this feature (enabled by default on 12.3T and later) enables an OSPF area to transport traffic from different areas (including backbone areas or not) but you still need a virtual-link if want to do it for non-backbone areas.
If you disable this capability you will be basically telling this router that a non-backbone area cannot be used to transport traffic between diff areas.
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...