Methods and apparatus to route traffic in a virtual private network

摘要

Methods and apparatus disclosed herein include receiving, at a first provider router that is not an edge router, first route information from a provider edge router. The first route information identifies a customer address in a customer network coupled to the provider edge router. The methods also include replacing, at the first provider router, a first next hop address included in the first route information with a second next hop address. The first next hop address identifies the provider edge router and the second next hop address identifies the first provider router. The methods also include advertising the first route information to a second provider router located in a different region than the first provider router.

主权项

1. A method to route traffic in a virtual private network, the method comprising:
receiving, at a first provider router in a first region, first route information from a first provider edge router of a plurality of provider edge routers in the first region, the first provider router not being at an edge of a provider network included in the virtual private network, the first route information identifying a first route to a customer address in a customer network coupled to the first provider edge router; replacing, at the first provider router, a first next hop address included in the first route information with a second next hop address, the first next hop address identifying the provider edge router and the second next hop address identifying the first provider router; after the replacing of the first next hop address, advertising the first route information to the plurality of provider edge routers in response to determining data traffic to traverse the first route is to access a service; and after the replacing of the first next hop address, advertising the first route information to a second provider router in a second region remote from the first region.