It would likely be common with Hurricane Electric as a peer. They peer freely and their good value means they're in many BGP mixes. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com ----- Original Message ----- From: "Kotikalapudi Sriram (Fed) via NANOG" <nanog@lists.nanog.org> To: nanog@nanog.org Cc: "Kotikalapudi Sriram (Fed)" <kotikalapudi.sriram@nist.gov> Sent: Monday, April 7, 2025 8:14:55 AM Subject: [NANOG] question about peering relationships Does the following ever happen in reality? Do you think it is strange and unlikely? The lateral (i.e., non-transit) peer of an AS is also the transit provider of the AS's transit provider. Example: AS A has AS B as a transit provider and AS C as a lateral peer, and AS C is a transit provider of AS B. Thank you. Sriram _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog@lists.nanog.org/message/NSV3GXEZ...