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1. 发明申请

US20180331941A1 VARYING A PER-HOP-BANDWIDTH CONSTRAINT IN MULTI-PATH LABEL SWITCHED PATHS 审中-公开
公开(公告)号：US20180331941A1
公开(公告)日：2018-11-15
申请号：US15590711
申请日：2017-05-09
申请人： Juniper Networks, Inc.
发明人： Ravi Singh , Kireeti Kompella , Abhishek Deshmukh
IPC分类号： H04L12/733 , H04L12/751 , H04L12/761 , H04L12/775 , H04L12/721
CPC分类号： H04L45/20 , H04L45/10 , H04L45/16 , H04L45/24 , H04L45/58 , H04L45/66 , H04L47/125 , H04L47/726 , H04L47/748 , H04L47/825
摘要： Techniques are described for varying a bandwidth constraint at one or more hops along a path of a sub-label-switched path (sub-LSP) of a multi-path label-switched path (MP-LSP). The techniques include computing, by an ingress router, a plurality of paths for a plurality of sub-LSPs of a MP-LSP and outputting, by the ingress router, for each path of the plurality of paths, a respective resource reservation request message to establish a respective sub-LSP of the plurality of sub-LSPs, each respective resource reservation request message including an indication of an explicit route, a tunnel identifier indicating the MP-LSP, an identifier for the respective sub-LSP, an indication of a per-hop bandwidth constraint that corresponds to a respective incoming per-hop bandwidth constraint of the plurality of incoming per-hop bandwidth constraints, and one or more instructions to modify the indication of the per-hop bandwidth constraint.

2. 发明授权

US10541912B2 Detecting egresses of a point-to-multipoint label switched path in a ring network 有权
公开(公告)号：US10541912B2
公开(公告)日：2020-01-21
申请号：US15986476
申请日：2018-05-22
申请人： Juniper Networks, Inc.
发明人： Ravi Singh , Kireeti Kompella
IPC分类号： H04L12/723 , H04L12/933 , H04L12/755 , H04L12/761 , H04L12/18 , H04L12/42 , H04L12/913
摘要： Techniques are described for detecting egress network devices of a point-to-multipoint (P2MP) label switched path (LSP). For example, a network device may include one or more processors configured to identify a P2MP LSP for receiving multicast traffic from a multicast source for a specific multicast group for which the network device has an interested receiver, wherein the network device is to be an egress network device of the P2MP LSP; and send, to an ingress network device of the P2MP LSP, a P2MP egress identification message to add the network device as an egress network device of the P2MP LSP, wherein the one or more processors are further configured to output the P2MP egress identification message into a multipoint-to-point (MP2P) ring LSP for which the ingress network device of the P2MP LSP is a sole egress network device of the MP2P ring LSP.

3. 发明授权

US09660860B1 Path computation delay timer in multi-protocol label switched networks 有权
公开(公告)号：US09660860B1
公开(公告)日：2017-05-23
申请号：US14585303
申请日：2014-12-30
申请人： Juniper Networks, Inc.
发明人： Yakov Rekhter , Raveendra Torvi , Ravi Singh , Minjie Dai , John E. Drake , Vishnu Pavan Kumar Beeram , Yimin Shen , Harish Sitaraman , Chandrasekar Ramachandran
IPC分类号： H04L12/26 , H04L12/24 , H04L12/723
CPC分类号： H04L45/50 , H04L41/0631 , H04L41/0659 , H04L45/28
摘要： In general, techniques are described for a path computation delay timer for multi-protocol label switched networks. As an example, an ingress network device configured to act as an ingress for a label switched path (LSP) may perform the techniques. The ingress network device comprises an interface and a processor. The interface may receive a message indicating an error along the LSP. The processor may delay an operation performed to configure a replacement LSP to be used in place of the LSP in order to provide time during which a cause of the error along the LSP is able to be determined. When the cause of the error is determined to be a failure of a network device supporting operation of the LSP, the processor may further perform the operation to configure the replacement LSP with the ingress network device such that the replacement LSP avoids the failed network device.

4. 发明授权

US10715428B2 Resource reservation techniques for point-to-multipoint tunnels on a ring network 有权
公开(公告)号：US10715428B2
公开(公告)日：2020-07-14
申请号：US16018708
申请日：2018-06-26
申请人： Juniper Networks, Inc.
发明人： Zhaohui Zhang , Abhishek Deshmukh , Ravi Singh
IPC分类号： H04L12/723 , H04L12/42 , H04L12/761
摘要： Techniques are described for signaling a resource reservation point-to-multipoint (P2MP) label switched path (LSP) in a ring network. For example, the techniques include sending a single resource reservation request message without the ingress needing to send multiple resource reservation request messages, one for each leaf network device of the P2MP ring LSP. The resource reservation request message includes a leaf identification object from which network devices of a P2MP ring LSP may explicitly or implicitly identify themselves as prospective leaf network devices of the P2MP ring LSP. A network device determined to be a leaf network device may send a resource reservation response message back to the ingress network device of the P2MP ring LSP and send a modified resource reservation request message (if explicit) and/or the same resource reservation request message (if implicit) to a next hop network device along the P2MP ring LSP.

5. 发明申请

US20190394122A1 RESOURCE RESERVATION TECHNIQUES FOR POINT-TO-MULTIPOINT TUNNELS ON A RING NETWORK 审中-公开
公开(公告)号：US20190394122A1
公开(公告)日：2019-12-26
申请号：US16018708
申请日：2018-06-26
申请人： Juniper Networks, Inc.
发明人： Zhaohui Zhang , Abhishek Deshmukh , Ravi Singh
IPC分类号： H04L12/723 , H04L12/42 , H04L12/761
摘要： Techniques are described for signaling a resource reservation point-to-multipoint (P2MP) label switched path (LSP) in a ring network. For example, the techniques include sending a single resource reservation request message without the ingress needing to send multiple resource reservation request messages, one for each leaf network device of the P2MP ring LSP. The resource reservation request message includes a leaf identification object from which network devices of a P2MP ring LSP may explicitly or implicitly identify themselves as prospective leaf network devices of the P2MP ring LSP. A network device determined to be a leaf network device may send a resource reservation response message back to the ingress network device of the P2MP ring LSP and send a modified resource reservation request message (if explicit) and/or the same resource reservation request message (if implicit) to a next hop network device along the P2MP ring LSP.

6. 发明申请

US20190363978A1 DETECTING EGRESSES OF A POINT-TO-MULTIPOINT LABEL SWITCHED PATH IN A RING NETWORK 有权
公开(公告)号：US20190363978A1
公开(公告)日：2019-11-28
申请号：US15986476
申请日：2018-05-22
申请人： Juniper Networks, Inc.
发明人： Ravi Singh , Kireeti Kompella
IPC分类号： H04L12/723 , H04L12/755 , H04L12/933
摘要： Techniques are described for detecting egress network devices of a point-to-multipoint (P2MP) label switched path (LSP). For example, a network device may include one or more processors configured to identify a P2MP LSP for receiving multicast traffic from a multicast source for a specific multicast group for which the network device has an interested receiver, wherein the network device is to be an egress network device of the P2MP LSP; and send, to an ingress network device of the P2MP LSP, a P2MP egress identification message to add the network device as an egress network device of the P2MP LSP, wherein the one or more processors are further configured to output the P2MP egress identification message into a multipoint-to-point (MP2P) ring LSP for which the ingress network device of the P2MP LSP is a sole egress network device of the MP2P ring LSP.

7. 发明授权

US09178810B1 Handling entropy labels when stitching label-switched paths 有权
标题翻译：在拼接标签交换路径时处理熵标签
公开(公告)号：US09178810B1
公开(公告)日：2015-11-03
申请号：US13952254
申请日：2013-07-26
申请人： Juniper Networks, Inc.
发明人： Ravi Singh , John E. Drake , Adrian Farrel , Yimin Shen
IPC分类号： H04L12/723 , H04L12/803 , H04L29/08
CPC分类号： H04L45/50 , H04L12/4633 , H04L47/125 , H04L67/1002 , H04L69/22
摘要： In one example, a stitching point routing device, which stitches a previous segment of an end-to-end label-switched path (LSP) to a next segment of the end-to-end LSP, includes network interfaces configured to receive packets via the previous segment and send packets via the next segment, and one or more processors configured to determine whether the next segment supports entropy labels, determine whether a packet received from the previous segment is encapsulated by a label stack including an entropy label, when the next segment does not support entropy labels and when the packet is encapsulated by the label stack including the entropy label, remove the entropy label from the label stack, when the next segment supports entropy labels and when the packet is not encapsulated by the label stack including the entropy label, add an entropy label to the label stack, and forward the packet along the next segment.
摘要翻译：在一个示例中，将端到端标签交换路径（LSP）的先前段缝合到端到端LSP的下一段的拼接点路由设备包括被配置为经由前一段并经由下一段发送数据包，以及一个或多个处理器，被配置为确定下一个段是否支持熵标签，确定从前一段接收到的数据包是否被包含熵标签的标签栈封装，当下一个段段不支持熵标签，并且当分组被包括熵标签的标签栈封装在一起时，从标签堆栈中移除熵标签，当下一个段支持熵标签时，并且当该分组未被标签栈封装时，包括熵标签，向标签栈添加熵标签，并沿着下一个段转发数据包。

8. 发明授权

US11425022B1 Service-based tunnel selection scheme for mapping services to tunnels 有权
公开(公告)号：US11425022B1
公开(公告)日：2022-08-23
申请号：US16779426
申请日：2020-01-31
申请人： Juniper Networks, Inc.
发明人： Ravi Singh , Yimin Shen , Junan Chen , Shraddha Hegde , Ahmed R. Darwish
IPC分类号： H04L45/00 , H04L45/02 , H04L12/46 , H04L69/00 , H04L41/12 , H04L61/251
摘要： Techniques are disclosed for service-based tunnel selection for forwarding network traffic. In one example, a network device obtains, based on service parameters associated with a network service, a service-specific tunnel selection scheme. The tunnel selection scheme identifies a primary mapping mode for mapping the network service to a primary transport tunnel and fallback mapping modes for mapping the network service to fallback transport tunnels. The primary mapping mode is categorized according to a first type comprising tunnel colorization, while the fallback mapping modes are categorized according to types other than tunnel colorization. In response to determining that the network service cannot be mapped to the primary transport tunnel according to the primary mapping mode, the network device, maps, based on the fallback mapping modes, the network service to the fallback transport tunnels. The network device forwards network traffic associated with the network service via the fallback transport tunnels.

9. 发明授权

US11190461B2 Mapping services to tunnels in order to forward packets using a network device 有权
公开(公告)号：US11190461B2
公开(公告)日：2021-11-30
申请号：US16588387
申请日：2019-09-30
申请人： Juniper Networks, Inc.
发明人： Ravi Singh , Junan Chen
IPC分类号： H04L12/937 , H04L12/851 , H04L29/06
摘要： This disclosure is related to devices, systems, and techniques for controlling a flow of network traffic between two or more devices. For example, a network device includes a control unit, a forwarding unit including a forwarding manager including a server configured to store a tunnel hierarchy structure, and a packet processor. The packet processor is configured to receive, via an interface card of a set of interface cards, a packet including a packet header. The forwarding manager is configured to parse the packet header in order to identify a service corresponding to the packet, wherein the service is associated with a service color, identify, based on the tunnel hierarchy structure, a set of tunnels, wherein each tunnel of the set of tunnels is associated with a tunnel color, and determine whether at least one tunnel of a set of tunnels associated with the tunnel color is in an online state.

10. 发明授权

US10382326B1 Detecting egresses of a point-to-multipoint label switched path in a ring network 有权
公开(公告)号：US10382326B1
公开(公告)日：2019-08-13
申请号：US15986476
申请日：2018-05-22
申请人： Juniper Networks, Inc.
发明人： Ravi Singh , Kireeti Kompella
IPC分类号： H04L12/723 , H04L12/933 , H04L12/755
CPC分类号： H04L45/50 , H04L12/185 , H04L12/422 , H04L45/021 , H04L45/16 , H04L47/724 , H04L49/102
摘要： Techniques are described for detecting egress network devices of a point-to-multipoint (P2MP) label switched path (LSP). For example, a network device may include one or more processors configured to identify a P2MP LSP for receiving multicast traffic from a multicast source for a specific multicast group for which the network device has an interested receiver, wherein the network device is to be an egress network device of the P2MP LSP; and send, to an ingress network device of the P2MP LSP, a P2MP egress identification message to add the network device as an egress network device of the P2MP LSP, wherein the one or more processors are further configured to output the P2MP egress identification message into a multipoint-to-point (MP2P) ring LSP for which the ingress network device of the P2MP LSP is a sole egress network device of the MP2P ring LSP.

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