Patents by Inventor Markus Jork
Markus Jork has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230198848Abstract: Techniques are disclosed for promulgating service information and topology information in a network in a high availability manner. An example device is configured to create a first service and topology exchange protocol (STEP) document. The first STEP document includes service information and topology information. The example device is configured to send the first STEP document to a first STEP repository for forwarding to at least one subscribing network device. The example device is also configured to send the first STEP document to a second STEP repository for forwarding to the at least one subscribing network device.Type: ApplicationFiled: March 29, 2022Publication date: June 22, 2023Inventors: Tong Jiang, Chaohui Zhang, Abilash Menon, John M. Peterson, Markus Jork, Pranav Kethe-Sai
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Patent number: 11456955Abstract: A network device is configured to associate a tenant of a plurality of tenants with a virtual routing and forwarding (VRF) instance of a plurality of VRF instances. The network device receives a packet comprising metadata specifying a tenant identifier for the tenant. The network device identifies, based on the tenant identifier specified by the metadata, the VRF instance associated with the tenant. The network device retrieves one or more routes from a routing information base (RIB) of the VRF instance associated with the tenant and forwards the packet toward a destination via the one or more routes.Type: GrantFiled: April 16, 2021Date of Patent: September 27, 2022Assignee: Juniper Networks, Inc.Inventors: Abilash Menon, Markus Jork, John M. Peterson
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Publication number: 20220200887Abstract: Techniques are described for a router providing metric-based multi-hop path selection. For example, a first router of a plurality of routers receives a plurality of network performance metrics for a plurality of links interconnecting the plurality of routers. The plurality of links form a plurality of multi-hop paths through the plurality of routers to a service instance. The router determines, based on the plurality of network performance metrics for the plurality of links, an end-to-end performance of each of the plurality of multi-hop paths. The router selects a multi-hop path over which to forward traffic associated with the session based on the end-to-end performance of each of the plurality of multi-hop paths and one or more performance requirements for a service associated between a session between a client device and the service instance. The router forwards the traffic to the service instance along the selected multi-hop path.Type: ApplicationFiled: December 23, 2021Publication date: June 23, 2022Inventors: Abilash Menon, Markus Jork, John M. Peterson
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Publication number: 20220021600Abstract: Techniques are described for a router providing metric-based multi-hop path selection. For example, a first router of a plurality of routers receives a plurality of network performance metrics for a plurality of links interconnecting the plurality of routers. The plurality of links form a plurality of multi-hop paths through the plurality of routers to a service instance. The router determines, based on the plurality of network performance metrics for the plurality of links, an end-to-end performance of each of the plurality of multi-hop paths. The router selects a multi-hop path over which to forward traffic associated with the session based on the end-to-end performance of each of the plurality of multi-hop paths and one or more performance requirements for a service associated between a session between a client device and the service instance. The router forwards the traffic to the service instance along the selected multi-hop path.Type: ApplicationFiled: September 30, 2021Publication date: January 20, 2022Inventors: Abilash Menon, Markus Jork, John M. Peterson
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Publication number: 20210328917Abstract: A network device is configured to associate a tenant of a plurality of tenants with a virtual routing and forwarding (VRF) instance of a plurality of VRF instances. The network device receives a packet comprising metadata specifying a tenant identifier for the tenant. The network device identifies, based on the tenant identifier specified by the metadata, the VRF instance associated with the tenant. The network device retrieves one or more routes from a routing information base (RIB) of the VRF instance associated with the tenant and forwards the packet toward a destination via the one or more routes.Type: ApplicationFiled: April 16, 2021Publication date: October 21, 2021Inventors: Abilash Menon, Markus Jork, John M. Peterson
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Patent number: 10728143Abstract: The disclosed computer-implemented method may include (1) receiving, at a network node within a network, a packet from another network node within the network, (2) identifying, within the packet, a label stack that includes a plurality of labels that collectively represent at least a portion of an LSP within the network, (3) popping, from the label stack, a label that corresponds to a specific link to a further network node, and then upon popping the label from the label stack, (4) forwarding the packet to the further network node by way of the specific link. Various other methods, systems, and apparatuses are also disclosed.Type: GrantFiled: June 7, 2019Date of Patent: July 28, 2020Assignee: Juniper Networks, Inc.Inventors: Harish Sitaraman, Raveendra Torvi, Markus Jork, Kireeti Kompella, Vishnu Pavan Beeram, Chandrasekar Ramachandran
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Patent number: 10659290Abstract: In one example, a merge point network device (MP) receives a plurality of resource reservation request messages for establishing a plurality of label switched paths (LSPs), wherein each of the plurality of LSPs has a common point of local repair network device (PLR) and has the MP as a common MP, wherein each of the resource reservation request messages identifies a common bypass tunnel that extends between the PLR and the MP and avoids a protected resource. The MP stores an association between the bypass tunnel and each of the plurality of LSPs. The MP receives a single message to trigger creation at the merge point network device of backup LSP state information for all of the plurality of LSPs. In response to receiving the single message, the MP installs state information for all of the LSPs that correspond to the bypass tunnel according to the stored association.Type: GrantFiled: July 9, 2018Date of Patent: May 19, 2020Assignee: Juniper Networks, Inc.Inventors: Markus Jork, Abhishek Deshmukh, Alia K. Atlas, Raveendra Torvi
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Patent number: 10469365Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.Type: GrantFiled: December 30, 2014Date of Patent: November 5, 2019Assignee: Juniper Networks, Inc.Inventors: Chandrasekar Ramachandran, Markus Jork, Yakov Rekhter, Harish Sitaraman
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Publication number: 20190297008Abstract: The disclosed computer-implemented method may include (1) receiving, at a network node within a network, a packet from another network node within the network, (2) identifying, within the packet, a label stack that includes a plurality of labels that collectively represent at least a portion of an LSP within the network, (3) popping, from the label stack, a label that corresponds to a specific link to a further network node, and then upon popping the label from the label stack, (4) forwarding the packet to the further network node by way of the specific link. Various other methods, systems, and apparatuses are also disclosed.Type: ApplicationFiled: June 7, 2019Publication date: September 26, 2019Inventors: Harish Sitaraman, Raveendra Torvi, Markus Jork, Kireeti Kompella, Vishnu Pavan Beeram, Chandrasekar Ramachandran
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Patent number: 10361949Abstract: The disclosed computer-implemented method may include (1) receiving, at a network node within a network, a packet from another network node within the network, (2) identifying, within the packet, a label stack that includes a plurality of labels that collectively represent at least a portion of an LSP within the network, (3) popping, from the label stack, a label that corresponds to a specific link to a further network node, and then upon popping the label from the label stack, (4) forwarding the packet to the further network node by way of the specific link. Various other methods, systems, and apparatuses are also disclosed.Type: GrantFiled: April 20, 2017Date of Patent: July 23, 2019Assignee: Juniper Networks, IncInventors: Harish Sitaraman, Raveendra Torvi, Markus Jork, Kireeti Kompella, Vishnu Pavan Beeram, Chandrasekar Ramachandran
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Patent number: 10313234Abstract: Techniques are described for reusing downstream-assigned labels when establishing a new instance of a label switched path (LSP) prior to tearing down an existing instance of the LSP using make-before-break (MBB) procedures for RSVP. The techniques enable a routing engine of any non-ingress router along a path of the new LSP instance to reuse a previously allocated label for the existing LSP instance as the downstream assigned label for the new LSP instance when the paths of the existing LSP instance and the new LSP instance overlap. In this way, the non-ingress router does not need to update a label route in its forwarding plane for the reused label. When the new LSP instance completely overlaps the existing LSP instance, an ingress router of the LSP may avoid updating an ingress route in its forwarding plane for applications that use the LSP.Type: GrantFiled: December 7, 2017Date of Patent: June 4, 2019Assignee: Juniper Networks, Inc.Inventors: Minjie Dai, Yimin Shen, Raveendra Torvi, Markus Jork, Yakov Rekhter, Natrajan Venkataraman
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Patent number: 10187301Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.Type: GrantFiled: March 6, 2017Date of Patent: January 22, 2019Assignee: Juniper Networks, Inc.Inventors: Chandrasekar Ramachandran, Markus Jork, Yakov Rekhter, Harish Sitaraman
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Patent number: 10187298Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.Type: GrantFiled: December 30, 2014Date of Patent: January 22, 2019Assignee: Juniper Networks, Inc.Inventors: Chandrasekar Ramachandran, Markus Jork, Yakov Rekhter, Harish Sitaraman
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Patent number: 10182003Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.Type: GrantFiled: March 6, 2017Date of Patent: January 15, 2019Assignee: Juniper Networks, Inc.Inventors: Chandrasekar Ramachandran, Markus Jork, Yakov Rekhter, Harish Sitaraman
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Publication number: 20180262425Abstract: The disclosed computer-implemented method may include (1) receiving, at a network node within a network, a packet from another network node within the network, (2) identifying, within the packet, a label stack that includes a plurality of labels that collectively represent at least a portion of an LSP within the network, (3) popping, from the label stack, a label that corresponds to a specific link to a further network node, and then upon popping the label from the label stack, (4) forwarding the packet to the further network node by way of the specific link. Various other methods, systems, and apparatuses are also disclosed.Type: ApplicationFiled: April 20, 2017Publication date: September 13, 2018Inventors: Harish Sitaraman, Raveendra Torvi, Markus Jork, Kireeti Kompella, Vishnu Pavan Beeram, Chandrasekar Ramachandran
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Patent number: 10020984Abstract: In one example, a merge point network device (MP) receives a plurality of resource reservation request messages for establishing a plurality of label switched paths (LSPs), wherein each of the plurality of LSPs has a common point of local repair network device (PLR) and has the MP as a common MP, wherein each of the resource reservation request messages identifies a common bypass tunnel that extends between the PLR and the MP and avoids a protected resource. The MP stores an association between the bypass tunnel and each of the plurality of LSPs. The MP receives a single message to trigger creation at the merge point network device of backup LSP state information for all of the plurality of LSPs. In response to receiving the single message, the MP installs state information for all of the LSPs that correspond to the bypass tunnel according to the stored association.Type: GrantFiled: January 10, 2014Date of Patent: July 10, 2018Assignee: Juniper Networks, Inc.Inventors: Markus Jork, Abhishek Deshmukh, Alia K. Atlas, Raveendra Torvi
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Publication number: 20180097726Abstract: Techniques are described for reusing downstream-assigned labels when establishing a new instance of a label switched path (LSP) prior to tearing down an existing instance of the LSP using make-before-break (MBB) procedures for RSVP. The techniques enable a routing engine of any non-ingress router along a path of the new LSP instance to reuse a previously allocated label for the existing LSP instance as the downstream assigned label for the new LSP instance when the paths of the existing LSP instance and the new LSP instance overlap. In this way, the non-ingress router does not need to update a label route in its forwarding plane for the reused label. When the new LSP instance completely overlaps the existing LSP instance, an ingress router of the LSP may avoid updating an ingress route in its forwarding plane for applications that use the LSP.Type: ApplicationFiled: December 7, 2017Publication date: April 5, 2018Inventors: Minjie Dai, Yimin Shen, Raveendra Torvi, Markus Jork, Yakov Rekhter, Natrajan Venkataraman
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Patent number: 9843508Abstract: Techniques are described for reusing downstream-assigned labels when establishing a new instance of a label switched path (LSP) prior to tearing down an existing instance of the LSP using make-before-break (MBB) procedures for RSVP. The techniques enable a routing engine of any non-ingress router along a path of the new LSP instance to reuse a previously allocated label for the existing LSP instance as the downstream assigned label for the new LSP instance when the paths of the existing LSP instance and the new LSP instance overlap. In this way, the non-ingress router does not need to update a label route in its forwarding plane for the reused label. When the new LSP instance completely overlaps the existing LSP instance, an ingress router of the LSP may avoid updating an ingress route in its forwarding plane for applications that use the LSP.Type: GrantFiled: April 9, 2015Date of Patent: December 12, 2017Assignee: Juniper Networks, Inc.Inventors: Minjie Dai, Yimin Shen, Raveendra Torvi, Markus Jork, Yakov Rekhter, Natrajan Venkataraman
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Publication number: 20170195216Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.Type: ApplicationFiled: March 6, 2017Publication date: July 6, 2017Inventors: Chandrasekar Ramachandran, Markus Jork, Yakov Rekhter, Harish Sitaraman
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Publication number: 20170180248Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.Type: ApplicationFiled: March 6, 2017Publication date: June 22, 2017Inventors: Chandrasekar Ramachandran, Markus Jork, Yakov Rekhter, Harish Sitaraman