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11.
公开(公告)号:US20240348559A1
公开(公告)日:2024-10-17
申请号:US18357029
申请日:2023-07-21
Applicant: Cisco Technology, Inc.
Inventor: Christian Schmutzer , Francois Clad , Stephane Litkowski
IPC: H04L47/726 , H04L45/50 , H04L45/52
CPC classification number: H04L47/726 , H04L45/50 , H04L45/52
Abstract: Techniques for enabling a resource reservation routing protocol (e.g., the Resource Reservation Protocol-Traffic Engineering (RSVP-TE) protocol) to perform routing operations based at least in part on bandwidth reservations by a non-reservation protocol (e.g., the Segment Routing (SR) protocol) are described herein. In some cases, the techniques described herein enable an example network to use both a resource reservation protocol and a non-reservation protocol. In some cases, one or more bandwidth reservation measures associated with a label-switched path (LSP) associated with a non-reservation protocol (e.g., an SR LSP) are used to create LSPs associated with a resource reservation protocol (e.g., RSVP-TE LSPs).
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公开(公告)号:US11997005B2
公开(公告)日:2024-05-28
申请号:US18166775
申请日:2023-02-09
Applicant: Cisco Technology, Inc.
Inventor: Mankamana Prasad Mishra , Ijsbrand Wijnands , Anuj Budhiraja , Ali Sajassi , Stephane Litkowski , Satya Ranjan Mohanty
CPC classification number: H04L45/16 , H04L12/185 , H04L12/1886 , H04L12/4641 , H04L45/02 , H04L45/586
Abstract: A method comprises, at a first router configured to perform Bit Index Explicit Replication (BIER) for forwarding of multicast packets in a network, storing configuration information that indicates that the first router belongs to multiple subdomains of a BIER domain, and is able to forward the multicast packets for a virtual private network on the multiple subdomains. The method further comprises, during an auto-discovery procedure, generating an auto-discovery message to include an auto-discovery route and route attributes that indicate the multiple subdomains, and sending the auto-discovery message to a second router of the virtual private network the network.
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公开(公告)号:US20230396486A1
公开(公告)日:2023-12-07
申请号:US18345246
申请日:2023-06-30
Applicant: Cisco Technology, Inc.
Inventor: Peter Psenak , Lester C. Ginsberg , Ketan Jivan Talaulikar , Clarence Filsfils , Francois Clad , Stephane Litkowski
IPC: H04L41/0654 , H04L41/0631 , H04L41/0686
CPC classification number: H04L41/0654 , H04L41/0631 , H04L41/0686
Abstract: The present technology is directed to signaling unreachability of a network device, more specifically, a prefix of the network device in network that utilizes route summarization. A pulse trigger agent can detect an unreachability of at least one Provider Edge (PE) device in a network domain of a network and determine that a route summarization is being used within the network where the unreachability of the at least one PE device is hidden by the route summarization. A pulse distribution agent can transmit a failure message informing other PE devices of the unreachability of the at least one PE device.
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公开(公告)号:US20220239585A1
公开(公告)日:2022-07-28
申请号:US17160508
申请日:2021-01-28
Applicant: Cisco Technology, Inc.
Inventor: Mankamana Prasad Mishra , Rajiv Asati , IJsbrand Wijnands , Stephane Litkowski , Nitin Kumar
IPC: H04L12/761 , H04L12/707 , H04L12/18 , H04L29/06 , H04L12/46
Abstract: A method is performed at a router configured to perform Bit Index Explicit Replication (BIER) for forwarding of multicast packets in a network. The method includes, upon receiving a multicast packet of a multicast flow, accessing flow mappings in which multicast flows are mapped to fixed accounting values corresponding to the multicast flows. The method further comprises generating a BIER header for the multicast packet by encoding a multi-segment entropy field of the BIER header with (i) a variable entropy value for equal-cost multi-path (ECMP) load balancing, and (ii) a fixed accounting value among the fixed accounting values that is mapped to the multicast flow in the flow mappings. The method also includes encapsulating the multicast packet with the BIER header to produce an encapsulated multicast packet, and forwarding the encapsulated multicast packet.
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公开(公告)号:US11102107B1
公开(公告)日:2021-08-24
申请号:US17090579
申请日:2020-11-05
Applicant: Cisco Technology, Inc.
Inventor: Mankamana Prasad Mishra , Ijsbrand Wijnands , Anuj Budhiraja , Ali Sajassi , Stephane Litkowski , Satya Ranjan Mohanty
IPC: G06F15/16 , H04L12/761 , H04L12/713 , H04L12/18 , H04L12/46 , H04L12/751
Abstract: A method comprises, at a first router configured to perform Bit Index Explicit Replication (BIER) for forwarding of multicast packets in a network, storing configuration information that indicates that the first router belongs to multiple subdomains of a BIER domain, and is able to forward the multicast packets for a virtual private network on the multiple subdomains. The method further comprises, during an auto-discovery procedure, generating an auto-discovery message to include an auto-discovery route and route attributes that indicate the multiple subdomains, and sending the auto-discovery message to a second router of the virtual private network the network.
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