https://blog.vitalvas.com/tags/cloudrouter/Recent content in Cloudrouter on Blog NotesHugoen_USSun, 19 Jul 2026 01:29:08 -0400https://blog.vitalvas.com/post/2026/07/19/jump-into-crdp-aka-cloudrouter-discovery-protocol/Sun, 19 Jul 2026 01:29:08 -0400https://blog.vitalvas.com/post/2026/07/19/jump-into-crdp-aka-cloudrouter-discovery-protocol/<p>Every router needs to answer a simple operator question: &ldquo;what else is on this link?&rdquo; LLDP already solves neighbour discovery on wired ethernet, but it rides a reserved layer-2 multicast destination that many bridges and virtual switches filter or consume, so the frames never reach the peer. CRDP (CloudRouter Discovery Protocol) keeps LLDP&rsquo;s well-understood TLV payload and simply carries it inside ordinary IPv6 link-local multicast UDP, so the beacon traverses bridges like any other multicast packet while staying decodable by any LLDP-aware tool.</p>