公开(公告)号：US20210021509A1

公开(公告)日：2021-01-21

申请号：US16514942

申请日：2019-07-17

申请人： Cisco Technology, Inc.

发明人： Ali SAJASSI ,  Mankamana P. MISHRA ,  Samir THORIA ,  Patrice BRISSETTE ,  Mei ZHANG ,  Tapraj SINGH

IPC分类号： H04L12/715 ,  H04L12/46 ,  H04L12/721 ,  H04L12/761 ,  H04L29/12

摘要： Techniques for routing traffic across different virtual local area networks (VLANs) within a single bridge domain are described. One technique includes receiving at a first network device a packet from a second network device on a first interface of multiple interfaces within a bridge domain at the first network device. Attachment circuit information associated with the packet is determined. An information element that includes an indication of the attachment circuit information is generated. The information element is transmitted to the third network device.

公开(公告)号：US20200099775A1

公开(公告)日：2020-03-26

申请号：US16697134

申请日：2019-11-26

申请人： Cisco Technology, Inc.

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

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

摘要： 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：US20220286395A1

公开(公告)日：2022-09-08

申请号：US17453353

申请日：2021-11-03

申请人： Cisco Technology, Inc.

发明人： Rakesh GANDHI ,  Clarence FILSFILS ,  Zafar ALI ,  Patrice BRISSETTE

IPC分类号： H04L12/741 ,  H04L12/733

摘要： In one embodiment, Segment Routing Internet Protocol Version 6 (SRv6) micro segments (“uSIDs”) are included in destination addresses, and possibly in other Segment Identifiers (“SIDs”), of packets transported through a network, and invoking corresponding network behavior, including, but not limited to, realization of corresponding network slices. In one embodiment, network nodes are configured to perform differential network slice realization functionality based on values slice-representative value(s) provided by global and/or local uSIDs of packets. This configuration may be defined by a controller in the network and/or routing protocol advertisements. Responsive to a received packet, a network node identifies and performs the corresponding network slice realization functionality based on slice-representative value(s) provided by one or more global and/or local uSIDs of the destination address of the received packet. Various encodings within an IPv6 Destination Address of the encapsulating packet are disclosed.

公开(公告)号：US20200274798A1

公开(公告)日：2020-08-27

申请号：US15929601

申请日：2020-05-12

申请人： Cisco Technology, Inc.

发明人： Clarence FILSFILS ,  Ahmed Refaat BASHANDY ,  Syed Kamran RAZA ,  Darren DUKES ,  Patrice BRISSETTE ,  Jisu BHATTACHARYA

IPC分类号： H04L12/721 ,  H04L12/755 ,  H04L12/741 ,  H04L12/749

摘要： In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.