AWS Direct Connect Adds Support for 4-Byte AS Numbers
🌐 AWS Direct Connect now supports 4-byte Autonomous System (AS) numbers for virtual interfaces, extending the usable ASN range to the full RFC 6793 limit of 4,294,967,294. The change addresses constraints imposed by the legacy 2-byte ASN space (max 65,536), which can complicate complex or multi-tenant network topologies. Support is available in all AWS regions and across all Direct Connect virtual interface types. To provision, use the Direct Connect Console or the updated APIs to specify 4-byte ASNs when creating virtual interfaces.
