公开(公告)号：US20220224410A1

公开(公告)日：2022-07-14

申请号：US17145862

申请日：2021-01-11

Applicant: Cisco Technology, Inc.

Inventor： Raghunandan Annavajjala ,  Sudhir Kayamkulangara ,  Christian Schmutzer ,  Luca Della Chiesa ,  Rayen Mohanty

IPC: H04B10/032 ,  H04L12/707 ,  H04Q11/00

Abstract: In one example, a first Provider Edge (PE) node is configured to communicate with a second PE node through a packet-switched network and with a third PE node through the packet-switched network. The first PE node communicates with a fourth PE node via the second PE node. The fourth PE node is configured to communicate with the second PE node over a working path through a time-division multiplexing transport network. The first PE node exchanges, with the fourth PE node, protection information. Based on exchanging the protection information, the first PE node communicates with the fourth PE node via the third PE node. The fourth PE node is further configured to communicate with the third PE node over a protection path through the time-division multiplexing transport network.

公开(公告)号：US11595119B2

公开(公告)日：2023-02-28

申请号：US17145862

申请日：2021-01-11

Applicant: Cisco Technology, Inc.

Inventor： Raghunandan Annavajjala ,  Sudhir Kayamkulangara ,  Christian Schmutzer ,  Luca Della Chiesa ,  Rayen Mohanty

IPC: H04B10/032 ,  H04L45/00 ,  H04Q11/00

Abstract: In one example, a first Provider Edge (PE) node is configured to communicate with a second PE node through a packet-switched network and with a third PE node through the packet-switched network. The first PE node communicates with a fourth PE node via the second PE node. The fourth PE node is configured to communicate with the second PE node over a working path through a time-division multiplexing transport network. The first PE node exchanges, with the fourth PE node, protection information. Based on exchanging the protection information, the first PE node communicates with the fourth PE node via the third PE node. The fourth PE node is further configured to communicate with the third PE node over a protection path through the time-division multiplexing transport network.

公开(公告)号：US11239932B2

公开(公告)日：2022-02-01

申请号：US16230849

申请日：2018-12-21

Applicant: Cisco Technology, Inc.

Inventor： Raghunandan Annavajjala ,  Anand B. Agarwal ,  Onkar R. Deshpande ,  Christian Schmutzer

IPC: H04J3/06 ,  H04J3/16 ,  H04J3/14

Abstract: Techniques for emulating a time division multiplexed (TDM) circuit using a packet switched network are described. First and second packet nodes are installed in a communication network. The first TDM node and second TDM node form a first span in the TDM circuit. First and second fiber connections are disconnected from the first and second TDM nodes, and connected to the first and second packet nodes. A portion of TDM data transmission across the first span is emulated using a packet connection formed by the first packet node and the second packet node. The TDM data transmission includes transport overhead data, and the packet connection emulates the transport overhead data.