Announcing IPv6 prefixes

Announcing IPv6 prefixes requires deploying a series of routing techniques and protocols as well as establishing BGP sessions with the different upstream providers in order to exchange Internet routing information. Here, Internet routing information refers to Autonomous System Numbers and IPv6 prefixes. Announcing IP prefixes is a technical process that involves developing the operator’s own edge routing architecture, which must be planned, designed, configured, deployed, and operated in an organized, efficient and secure manner.

It makes it possible for an ISP operator to have an active presence on the Internet:


it provides the different autonomous systems with the routing information needed to reach the ISP operator's autonomous system. Technically, downstream traffic from the Internet to the ISP operator's autonomous system is possible thanks to their prefix announcements.


the ISP operator can obtain the IPv6 routing information towards the different autonomous systems on the IPv6 Internet. This routing information can be: a) BGP full routing, b) partial routing (only part of all IPv6 Internet prefixes), and c) limited to the default IPv6 gateway.

What does an ISP operator need in order to publish its IPv6 prefixes?


An Autonomous System Number (ASN) assignment.


The IPv6 prefix(es) that need to be published.

For steps a) and b), the ISP operator must have completed or submit a number resource request to LACNIC. It is important to note that LACNIC will grant each ISP operator at least a /32 and each end user a /48.


A native IPv6 transit connection from an upstream provider.


The edge routers ready for the deployment.


The technical and/or engineering team to plan, design, configure, program, test, certify, and operate the edge routing to make the announcements.

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