公开(公告)号：US11283906B2

公开(公告)日：2022-03-22

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 ,  H04L69/22 ,  H04L69/324 ,  H04L45/00 ,  H04L67/10 ,  H04L45/50 ,  H04L12/46 ,  H04L45/74 ,  H04L61/5007 ,  H04L49/35 ,  H04L67/63 ,  H04L45/741 ,  H04L101/659 ,  H04L61/2503 ,  H04L43/028 ,  H04L45/745

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.

公开(公告)号：US10892967B2

公开(公告)日：2021-01-12

申请号：US16229983

申请日：2018-12-21

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Amila Pradeep Kumara Tharaperiya Gamage ,  Rakesh Gandhi ,  Darren Dukes

IPC: H04W72/04 ,  H04L12/26 ,  H04L12/721

Abstract: Techniques are provided for determining end-to-end path delay measurements. In one embodiment, a method includes identifying equal-cost multi-path (ECMP) sections comprising at least two different ECMP paths in a network comprising a plurality of nodes. In response to receiving a request to determine a delay measurement for end-to-end paths from an ingress node to an egress node through the network, the method includes determining sets of ECMP sections that are between the ingress node and the egress node and determining a plurality of paths through each set of ECMP sections. The method includes measuring delay for each of the plurality of paths using probe packets and determining delay measurements for all end-to-end paths. The delay measurements for end-to-end paths include a first subset including measured delays from the probe packets and a second subset calculated using combinations of measured delays.