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公开(公告)号：US20190288940A1
公开(公告)日：2019-09-19
申请号：US15922860
申请日：2018-03-15
IPC分类号： H04L12/741 , H04L29/06 , H04L12/781
摘要： In one embodiment, segment routing network processing of packets is performed on segment routing packets to use engineered segment routing reverse reply paths which provide efficiencies in communicating packets in a network. In one embodiment, a source node selects a segment identifier of a destination node, with the segment identifier specifying a function value of a dynamic return path segment routing function in order to invoke this function on the destination node. The source node then sends a segment routing packet to the destination address of this segment identifier. Reacting to receipt of this packet and the function value of the dynamic return path segment routing function in the destination address or current segment identifier of the packet, a receiving node generates a responding segment routing packet including the segment identifiers from the received packet in reverse traversal order.
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公开(公告)号：US20190215267A1
公开(公告)日：2019-07-11
申请号：US15866176
申请日：2018-01-09
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
CPC分类号： H04L45/566 , H04L45/021 , H04L45/34 , H04L45/741 , H04L45/745
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.
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公开(公告)号：US10270664B2
公开(公告)日：2019-04-23
申请号：US15388938
申请日：2016-12-22
IPC分类号： H04L12/723 , H04L12/24 , H04L12/721 , H04L12/715 , H04L12/741 , H04L12/931 , H04L12/46 , H04L12/913
摘要： An apparatus and method is disclosed for segment routing (SR) over label distribution protocol (LDP). In one embodiment, the method includes a node receiving a packet with an attached segment ID. In response, the node may attach a label to the packet. Thereafter, the node may forward the packet with the attached label and segment ID to another node via a label switched path (LSP).
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公开(公告)号：US20190097925A1
公开(公告)日：2019-03-28
申请号：US16203877
申请日：2018-11-29
IPC分类号： H04L12/723 , H04L12/741
CPC分类号： H04L45/507 , H04L45/50 , H04L45/74
摘要： Disclosed is an apparatus and method for segment routing using a remote forwarding adjacency identifier. In one embodiment, a first node in a network receives a packet, wherein the packet is received with a first segment-ID and another segment ID attached thereto. The first node detaches the first and the other segment IDs from the packet. Then the first node attaches a first label to the packet. Eventually, the first node forwards the packet with the attached first label directly to a second node in the network. In one embodiment, the other segment ID corresponds to a forwarding adjacency or tunnel label switched path between the first node and another node.
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公开(公告)号：US20190081887A1
公开(公告)日：2019-03-14
申请号：US16185239
申请日：2018-11-09
IPC分类号： H04L12/707 , H04L12/815 , H04L12/46 , H04L12/721
CPC分类号： H04L45/22 , H04L12/4633 , H04L45/12 , H04L47/22
摘要： A method is described and in one embodiment includes receiving a packet of a traffic flow at an ingress node of a communications network; routing the packet to an egress node of the communications network via a first path comprising a tunnel if the packet was received from a node external to the communications network; and routing the packet to the egress node of the communications network via a second path that does not traverse the tunnel if the packet was received from a node internal to the communications network. The first path is identified by a first Forwarding Information Base (“FIB”) entry corresponding to the flow and the second path is identified by a second FIB entry corresponding to the flow.
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36.发明授权公开(公告)号：US10230605B1
公开(公告)日：2019-03-12
申请号：US16121535
申请日：2018-09-04
发明人： Clarence Filsfils , Rakesh Gandhi , Tarek Saad , Sagar Soni , Patrick Khordoc
摘要： The present technology is directed to a scalable solution for end-to-end performance delay measurement for Segment Routing Policies on both SR-MPLS and SRv6 data planes. The scalability of the solution stems from the use of distributed PM sessions along SR Policy ECMP paths. This is achieved by dividing the SR policy into smaller sections comprised of SPT trees or sub-paths, each of which is associated with a Root-Node. Downstream SID List TLVs may be used in Probe query messages for signaling SPT information to the Root-Nodes Alternatively, this SPT signaling may be accomplished by using a centralized controller. Root-Nodes are responsible for dynamically creating PM sessions and measuring delay metrics for their associated SPT tree section. The root-nodes then send the delay metrics for their local section to an ingress PE node or to a centralized controller using delay metric TLV field of the response message.
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公开(公告)号：US20180219982A1
公开(公告)日：2018-08-02
申请号：US15794334
申请日：2017-10-26
IPC分类号： H04L29/06 , H04L12/931 , G06F9/455
CPC分类号： H04L69/22 , G06F9/45558 , G06F2009/45583 , G06F2009/45595 , H04L41/5054 , H04L41/509 , H04L49/70
摘要： Aspects of the disclosed technology provide virtualized solutions for processing media frames. A process of the disclosed technology can include steps for receiving unprocessed media packets, de-packetizing the unprocessed media packets to produce unprocessed media frames, and sending the unprocessed media frames to a virtual media application. In some aspects, the process may further include steps for processing the unprocessed media frames, using the virtual media application, to produce processed media frames. Systems and machine-readable media are also provided.
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公开(公告)号：US20180083871A1
公开(公告)日：2018-03-22
申请号：US15827973
申请日：2017-11-30
IPC分类号： H04L12/723 , H04L29/06 , H04L12/721 , H04L12/775 , H04L12/24 , H04L12/717 , H04L12/751
CPC分类号： H04L45/50 , H04L41/00 , H04L45/02 , H04L45/26 , H04L45/34 , H04L45/38 , H04L45/42 , H04L45/44 , H04L45/58 , H04L45/66 , H04L69/166
摘要： An apparatus and method is disclosed for segment routing (SR). In one embodiment, the method includes a node creating a segment stack that identifies one segment calculated using a first algorithm and a second segment calculated using a second, different algorithm. The node then attaches this header to a packet and sends it to another node.
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公开(公告)号：US20180034728A1
公开(公告)日：2018-02-01
申请号：US15728177
申请日：2017-10-09
IPC分类号： H04L12/703 , H04L12/707 , H04L12/715 , H04L12/721 , H04L12/46
CPC分类号： H04L45/28 , H04L12/4645 , H04L45/04 , H04L45/22 , H04L45/66
摘要： A method, apparatus, and computer-readable storage medium are disclosed for processing shared risk group (SRG) information in communications networks. The method includes processing, at a domain in a network, first network information comprising a plurality of SRG identifiers. The processing includes producing second network information comprising a smaller number of SRG identifiers than that of the plurality of SRG identifiers. The method further includes sending at least a portion of the second network information to a second domain in the network. The apparatus includes a network interface adapted to send network information comprising SRG information, a processor coupled to the network interface, and a memory coupled to the processor and adapted to store program instructions operable to carry out steps of the method. The storage medium is configured to store program instructions that when executed are configured to cause a processor to carry out steps of the method.
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公开(公告)号：US09832110B2
公开(公告)日：2017-11-28
申请号：US15197971
申请日：2016-06-30
IPC分类号： H04L12/703 , H04L12/707 , H04L12/715 , H04L12/46 , H04L12/721
CPC分类号： H04L45/28 , H04L12/4645 , H04L45/04 , H04L45/22 , H04L45/66
摘要： A method, apparatus, and computer-readable storage medium are disclosed for processing shared risk group (SRG) information in communications networks. The method includes processing, at a first network layer, first network information comprising a plurality of SRG identifiers. The processing includes producing second network information comprising a smaller number of SRG identifiers than that of the plurality of SRG identifiers. The method further includes sending at least a portion of the second network information to the second network layer. The apparatus includes a network interface adapted to send network information comprising SRG information, a processor coupled to the network interface, and a memory coupled to the processor and adapted to store program instructions operable when executed to carry out steps of the method. The storage medium is configured to store program instructions that when executed are configured to cause a processor to carry out steps of the method.
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