公开(公告)号：US20200220745A1

公开(公告)日：2020-07-09

申请号：US16821965

申请日：2020-03-17

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：US20220014460A1

公开(公告)日：2022-01-13

申请号：US17448695

申请日：2021-09-23

Applicant: Cisco Technology, Inc.

Inventor： Clarence FILSFILS ,  Swadesh AGRAWAL ,  Zafar ALI ,  Pablo CAMARILLO GARVIA ,  Francois CLAD

IPC: H04L12/715 ,  H04L12/749

Abstract: In one embodiment, a network comprises a first forwarding domain using a first data plane forwarding protocol and a second forwarding domain using a second data plane forwarding protocol different than the first data forwarding plane forwarding protocol. The first forwarding domain includes a first path node and a particular border node. The second forwarding domain includes a second path node and the particular border node. The particular border node performs Segment Routing or other protocol interworking between the different data plane forwarding domains, such as for transporting packets through a different forwarding domain or translating a packet to use a different data forwarding protocol. These forwarding domains typically include Segment Routing (SR) and SR-Multiprotocol Label Switching (SR-MPLS). Paths through the network are determined by a Path Computation Engine and/or based on route advertisements such associated with Binding Segment Identifiers (BSIDs) (e.g., labels, Internet Protocol version 6 addresses).

公开(公告)号：US20200099775A1

公开(公告)日：2020-03-26

申请号：US16697134

申请日：2019-11-26

Applicant: Cisco Technology, Inc.

Inventor： Patrice BRISSETTE ,  Clarence FILSFILS ,  Darren DUKES ,  Gaurav DAWRA ,  Francois CLAD ,  Pablo CAMARILLO GARVIA

IPC: H04L29/06 ,  H04L29/08 ,  H04L12/721 ,  H04L12/46 ,  H04L12/741 ,  H04L29/12 ,  H04L12/931 ,  H04L12/749

Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.