TOS refers to Type of Service, which used to be a field in the IP header. That field has now been superceded by the DSCP field.
Older versions of OSPF used to support routing based on different values of the TOS bits. The current version of OSPF does not support that and uses zero in the fields which required a TOS value. That is why you see the TOS0 in the output of sh ip ospf.
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...