公开(公告)号：US20190288873A1

公开(公告)日：2019-09-19

申请号：US15925731

申请日：2018-03-19

Applicant: Cisco Technology, Inc.

Inventor： Pablo Camarillo Garvia ,  Hendrikus G. P. Bosch ,  Clarence Filsfils

IPC: H04L12/46 ,  H04L12/741

Abstract: In one embodiment, a segment routing and tunnel exchange provides packet forwarding efficiencies in a network, including providing an exchange between a segment routing domain and a packet tunnel domain. One application includes the segment routing and tunnel exchange interfacing segment routing packet forwarding (e.g., in a Evolved Packet Core (EPC) and/or 5-G user plane) and packet tunnel forwarding in access networks (e.g., replacing a portion of a tunnel between an access node and a user plane function for accessing a corresponding data network). In one embodiment, a network provides mobility services using a segment routing data plane that spans segment routing and tunnel exchange(s) and segment routing-enabled user plane functions. One embodiment uses the segment routing data plane without any modification to a (radio) access network (R)AN (e.g., Evolved NodeB, Next Generation NodeB) nor to user equipment (e.g., any end user device).

公开(公告)号：US20180375764A1

公开(公告)日：2018-12-27

申请号：US15981232

申请日：2018-05-16

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Francois Clad ,  Pablo Camarillo Garvia

IPC: H04L12/741 ,  H04L12/46 ,  H04L29/12

Abstract: In one embodiment, a third-party client network access device sends Internet Protocol (IP) encapsulating packets with a predetermined destination address of a node of the network client service provider (NCSP), with these IP encapsulating packets encapsulating original data packets. These IP encapsulating packets are communicated through the ISP network being used by the NCSP in providing its network services. The predetermined destination address, which is typically also a segment identifier, causes network service processing (e.g., according to a corresponding segment routing function) of the received packet by the node of the NCSP. This processing typically includes creating a segment routing packet encapsulating the original packet (extracted from the received IP encapsulating packet) with its segment list(s) being populated with segment identifier(s) according to a current NCSP segment routing policy reflective of a sequence of forwarding and service chaining operations of the NCSP service offering.