公开(公告)号：US20210029026A1

公开(公告)日：2021-01-28

申请号：US16588556

申请日：2019-09-30

Applicant: Juniper Networks, Inc.

Inventor： Abhishek Deshmukh ,  Raveendra Torvi ,  Tarek Saad ,  Vishnu Pavan Beeram

IPC: H04L12/721 ,  H04L12/935

Abstract: The same prefix segment identifier (SID) may be configured and/or used for either (A) more than one prefix within an interior gateway protocol (IGP) domain, or (B) one prefix with more than one path computation algorithm within the IGP domain by: (a) receiving, by a node in the IGP domain, an IGP advertisement including both (1) a prefix SID and a segment routing global block (SRGB) slice identifier; (b) determining whether or not the SRGB slice identified by the SRGB slice identifier is provisioned on the node; and (c) responsive to a determination that the SRGB slice identified by the SRGB slice identifier is not provisioned on the node, not processing the prefix SID included in the received IGP advertisement, and otherwise responsive to a determination that the SRGB slice identified by the SRGB slice identifier is provisioned on the node, (1) processing the prefix SID and SRGB slice to generate a unique, per SRGB slice, MPLS label for the prefix, and (2) updating a label forwarding information base (LFIB) for the node using the unique, per SRGB slice, label for the prefix and the prefix.

公开(公告)号：US10715428B2

公开(公告)日：2020-07-14

申请号：US16018708

申请日：2018-06-26

Applicant: Juniper Networks, Inc.

Inventor： Zhaohui Zhang ,  Abhishek Deshmukh ,  Ravi Singh

IPC: H04L12/723 ,  H04L12/42 ,  H04L12/761

Abstract: 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.

公开(公告)号：US10659290B1

公开(公告)日：2020-05-19

申请号：US16030211

申请日：2018-07-09

Applicant: Juniper Networks, Inc.

Inventor： Markus Jork ,  Abhishek Deshmukh ,  Alia K. Atlas ,  Raveendra Torvi

IPC: H04L12/24 ,  H04L12/723

Abstract: 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.

公开(公告)号：US20190394122A1

公开(公告)日：2019-12-26

申请号：US16018708

申请日：2018-06-26

Applicant: Juniper Networks, Inc.

Inventor： Zhaohui Zhang ,  Abhishek Deshmukh ,  Ravi Singh

IPC: H04L12/723 ,  H04L12/42 ,  H04L12/761

Abstract: 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.

公开(公告)号：US10020984B1

公开(公告)日：2018-07-10

申请号：US14152164

申请日：2014-01-10

Applicant: Juniper Networks, Inc.

Inventor： Markus Jork ,  Abhishek Deshmukh ,  Alia K. Atlas ,  Raveendra Torvi

IPC: G01R31/08 ,  H04L12/24 ,  H04L12/723

CPC classification number: H04L41/0668 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50

Abstract: 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.