https://app.kbone.net/vault/rfc/docid/4492
RFC4101: Writing Protocol Models
Network Working Group E. Rescorla Request for Comments: 4101 RTFM, Inc. Category: Informational IAB June 2005 ...
https://app.kbone.net/vault/rfc/docid/4995
RFC4577: OSPF as the Provider/Customer Edge Protocol for BGP/MPLS IP Virtual Private Networks (VPNs)
Network Working Group E. Rosen Request for Comments: 4577 P. Psenak Updates: 4364 P. Pillay-Esnault Category: Standards Track Cisco Systems, Inc. ...