In standard discussions regarding networking, "Layer-3" is presumed to mean Layer-3 (Network) within the ISO OSI Reference Model (Defined by the ISO in ISO/IEC 10731:1994) Layer-3 is the first layer with Network (in this case IP) Addresses. OSPF "rides" on IP, it uses IP addresses. OSPF is a layer-3 protocol.
If the tone of your message was not intended to be as hostile as it came out, I appoligize, otherwise possibly you should check the quality of the posts by others (eg deilert) before you post. If the quality of their previous posts has been high, you may want to consider double checking your facts before disagreeing.
I can't see any "hostile" remarks from anyone in this thread. Dave wrote it is a L3 protocol, Xiao disagreed saying it is L4, and I wrote saying it is protocol 89 (and from the link you can see it's running on IP), not TCP port 89. Hence I was agreeing with Dave.
I fail to see where the hostile remarks that you mention are coming from.
I agree OSPF is a Layer 3 'routing' protocol as opposed to 'routed' (IP Protocol #89). The OSPF will use the Layer 3 link cost calculated from your reference bandwidth. Although when using Native IOS & Layer 3 Port channels it does dynamicaly adjust the cost dependant on how many links are Layer 3 up etc
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...