The LSA-6 is not bad, it is just unsupported on Cisco routers.
There is an extension to the OSPF so that it can provide multicast routing capabilities. These extensions are called MOSPF (Multicast OSPF) and a new LSA type, the LSA-6, was introduced to allow a router to indicate its membership in selected multicast groups.
Multicast routing extensions to OSPF, described in RFC 1584, were not widely implemented because of relatively high complexity of the overall mechanism. Today, multicast routing is provided by the PIM multicast routing protocol. I believe Cisco never had a working implementation of the MOSPF. However, Cisco's OSPF implementation does recognize LSA-6 although it does not act upon them. If an LSA-6 is received by a Cisco router, it just prints out a warning message on the console. You can configure it to ignore the LSA-6 completely using the ignore lsa mospf command.
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...