公开(公告)号：US20200328968A1

公开(公告)日：2020-10-15

申请号：US16911794

申请日：2020-06-25

Applicant: Cisco Technology, Inc.

Inventor： Mitesh Mukesh Kanjariya ,  Ashutosh Gupta ,  Manoj Kumar Pandey

IPC: H04L12/723 ,  H04L12/46 ,  H04L12/18 ,  H04L12/755 ,  H04L12/751

Abstract: Embodiments of the present disclosure relate to assisting forwarding of multicast traffic over Ethernet Virtual Private Network (EVPN) from a multicast source to a host multi-homed to multiple provider edge (PE) devices. Embodiments are based on the inclusion of an Ethernet Segment Identification (ESI) to EVPN type-6 routes advertised by PE devices which received a multicast Join message. Other PE devices receiving such routes are able to determine whether they belong to the ES identified by the ESI and to determine whether they are designated forwarders (DFs) for the host. Furthermore, PE devices which are the DFs are configured to re-originate the EVPN type-6 routes, i.e. re-send the advertisements, indicating themselves as DFs. This ensures that a remote PE device associated with the multicast source will also send multicast traffic to such DF PE devices, which, in turn, would allow the multicast traffic to successfully reach the host.

公开(公告)号：US20240430227A1

公开(公告)日：2024-12-26

申请号：US18826319

申请日：2024-09-06

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Samir Thoria ,  Lukas Krattiger ,  Manoj Kumar Pandey

IPC: H04L61/5053 ,  H04L9/40 ,  H04L61/5014 ,  H04L101/622

Abstract: Systems and techniques are provided for synchronizing DHCP snoop information. In some examples, a method can include, performing, by a first PE device from a plurality of PE devices, DHCP snooping of a first plurality of DHCP messages between a DHCP client and a DHCP server, wherein the plurality of PE devices is part of an ethernet segment for multihoming the DHCP client. In some aspects, the method includes determining, based on snooping the first plurality of DHCP messages, an association between an IP address corresponding to the DHCP client and a MAC address corresponding to the DHCP client. In some examples, the method includes sending, by the first PE device to at least one other PE device from the plurality of PE devices, a first route advertisement that includes the association between the IP address corresponding to the DHCP client and the MAC address corresponding to the DHCP client.

公开(公告)号：US11606333B1

公开(公告)日：2023-03-14

申请号：US17686797

申请日：2022-03-04

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Samir Thoria ,  Lukas Krattiger ,  Manoj Kumar Pandey

IPC: H04L61/5053 ,  H04L9/40 ,  H04L61/5014 ,  H04L101/622

Abstract: Systems and techniques are provided for synchronizing DHCP snoop information. In some examples, a method can include, performing, by a first PE device from a plurality of PE devices, DHCP snooping of a first plurality of DHCP messages between a DHCP client and a DHCP server, wherein the plurality of PE devices is part of an ethernet segment for multihoming the DHCP client. In some aspects, the method includes determining, based on snooping the first plurality of DHCP messages, an association between an IP address corresponding to the DHCP client and a MAC address corresponding to the DHCP client. In some examples, the method includes sending, by the first PE device to at least one other PE device from the plurality of PE devices, a first route advertisement that includes the association between the IP address corresponding to the DHCP client and the MAC address corresponding to the DHCP client.

公开(公告)号：US20230283589A1

公开(公告)日：2023-09-07

申请号：US18172225

申请日：2023-02-21

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Samir Thoria ,  Lukas Krattiger ,  Manoj Kumar Pandey

IPC: H04L61/5053 ,  H04L9/40 ,  H04L61/5014

CPC classification number: H04L61/5053 ,  H04L63/101 ,  H04L63/0236 ,  H04L61/5014 ,  H04L2101/622

Abstract: Systems and techniques are provided for synchronizing DHCP snoop information. In some examples, a method can include, performing, by a first PE device from a plurality of PE devices, DHCP snooping of a first plurality of DHCP messages between a DHCP client and a DHCP server, wherein the plurality of PE devices is part of an ethernet segment for multihoming the DHCP client. In some aspects, the method includes determining, based on snooping the first plurality of DHCP messages, an association between an IP address corresponding to the DHCP client and a MAC address corresponding to the DHCP client. In some examples, the method includes sending, by the first PE device to at least one other PE device from the plurality of PE devices, a first route advertisement that includes the association between the IP address corresponding to the DHCP client and the MAC address corresponding to the DHCP client.

公开(公告)号：US12088552B2

公开(公告)日：2024-09-10

申请号：US18172225

申请日：2023-02-21

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Samir Thoria ,  Lukas Krattiger ,  Manoj Kumar Pandey

IPC: H04L61/5053 ,  H04L9/40 ,  H04L61/5014 ,  H04L101/622

CPC classification number: H04L61/5053 ,  H04L61/5014 ,  H04L63/0236 ,  H04L63/101 ,  H04L2101/622

Abstract: Systems and techniques are provided for synchronizing DHCP snoop information. In some examples, a method can include, performing, by a first PE device from a plurality of PE devices, DHCP snooping of a first plurality of DHCP messages between a DHCP client and a DHCP server, wherein the plurality of PE devices is part of an ethernet segment for multihoming the DHCP client. In some aspects, the method includes determining, based on snooping the first plurality of DHCP messages, an association between an IP address corresponding to the DHCP client and a MAC address corresponding to the DHCP client. In some examples, the method includes sending, by the first PE device to at least one other PE device from the plurality of PE devices, a first route advertisement that includes the association between the IP address corresponding to the DHCP client and the MAC address corresponding to the DHCP client.

公开(公告)号：US11381500B2

公开(公告)日：2022-07-05

申请号：US16911794

申请日：2020-06-25

Applicant: Cisco Technology, Inc.

Inventor： Mitesh Mukesh Kanjariya ,  Ashutosh Gupta ,  Manoj Kumar Pandey

IPC: H04L12/26 ,  H04L45/50 ,  H04L12/46 ,  H04L12/18 ,  H04L45/021 ,  H04L45/02

Abstract: Embodiments of the present disclosure relate to assisting forwarding of multicast traffic over Ethernet Virtual Private Network (EVPN) from a multicast source to a host multi-homed to multiple provider edge (PE) devices. Embodiments are based on the inclusion of an Ethernet Segment Identification (ESI) to EVPN type-6 routes advertised by PE devices which received a multicast Join message. Other PE devices receiving such routes are able to determine whether they belong to the ES identified by the ESI and to determine whether they are designated forwarders (DFs) for the host. Furthermore, PE devices which are the DFs are configured to re-originate the EVPN type-6 routes, i.e. re-send the advertisements, indicating themselves as DFs. This ensures that a remote PE device associated with the multicast source will also send multicast traffic to such DF PE devices, which, in turn, would allow the multicast traffic to successfully reach the host.

公开(公告)号：US20190075047A1

公开(公告)日：2019-03-07

申请号：US16174713

申请日：2018-10-30

Applicant: Cisco Technology, Inc.

Inventor： Mitesh Mukesh Kanjariya ,  Ashutosh Gupta ,  Manoj Kumar Pandey

IPC: H04L12/723 ,  H04L12/751 ,  H04L12/46

CPC classification number: H04L45/50 ,  H04L12/185 ,  H04L12/462 ,  H04L12/4633 ,  H04L12/4641 ,  H04L12/4662 ,  H04L45/02 ,  H04L45/021

Abstract: Embodiments of the present disclosure relate to assisting forwarding of multicast traffic over Ethernet Virtual Private Network (EVPN) from a multicast source to a host multi-homed to multiple provider edge (PE) devices. Embodiments are based on the inclusion of an Ethernet Segment Identification (ESI) to EVPN type-6 routes advertised by PE devices which received a multicast Join message. Other PE devices receiving such routes are able to determine whether they belong to the ES identified by the ESI and to determine whether they are designated forwarders (DFs) for the host. Furthermore, PE devices which are the DFs are configured to re-originate the EVPN type-6 routes, i.e. re-send the advertisements, indicating themselves as DFs. This ensures that a remote PE device associated with the multicast source will also send multicast traffic to such DF PE devices, which, in turn, would allow the multicast traffic to successfully reach the host.

公开(公告)号：US10164876B2

公开(公告)日：2018-12-25

申请号：US15374648

申请日：2016-12-09

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Mitesh Mukesh Kanjariya ,  Ashutosh Gupta ,  Manoj Kumar Pandey

IPC: H04L12/26 ,  H04L12/723 ,  H04L12/46 ,  H04L12/18 ,  H04L12/755

Abstract: Embodiments of the present disclosure relate to assisting forwarding of multicast traffic over Ethernet Virtual Private Network (EVPN) from a multicast source to a host multi-homed to multiple provider edge (PE) devices. Embodiments are based on the inclusion of an Ethernet Segment Identification (ESI) to EVPN type-6 routes advertised by PE devices which received a multicast Join message. Other PE devices receiving such routes are able to determine whether they belong to the ES identified by the ESI and to determine whether they are designated forwarders (DFs) for the host. Furthermore, PE devices which are the DFs are configured to re-originate the EVPN type-6 routes, i.e. re-send the advertisements, indicating themselves as DFs. This ensures that a remote PE device associated with the multicast source will also send multicast traffic to such DF PE devices, which, in turn, would allow the multicast traffic to successfully reach the host.

公开(公告)号：US20180167315A1

公开(公告)日：2018-06-14

申请号：US15374648

申请日：2016-12-09

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Mitesh Mukesh Kanjariya ,  Ashutosh Gupta ,  Manoj Kumar Pandey

IPC: H04L12/723 ,  H04L12/46 ,  H04L12/18 ,  H04L12/755

CPC classification number: H04L45/50 ,  H04L12/185 ,  H04L12/462 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/021

Abstract: Embodiments of the present disclosure relate to assisting forwarding of multicast traffic over Ethernet Virtual Private Network (EVPN) from a multicast source to a host multi-homed to multiple provider edge (PE) devices. Embodiments are based on the inclusion of an Ethernet Segment Identification (ESI) to EVPN type-6 routes advertised by PE devices which received a multicast Join message. Other PE devices receiving such routes are able to determine whether they belong to the ES identified by the ESI and to determine whether they are designated forwarders (DFs) for the host. Furthermore, PE devices which are the DFs are configured to re-originate the EVPN type-6 routes, i.e. re-send the advertisements, indicating themselves as DFs. This ensures that a remote PE device associated with the multicast source will also send multicast traffic to such DF PE devices, which, in turn, would allow the multicast traffic to successfully reach the host.

公开(公告)号：US10757017B2

公开(公告)日：2020-08-25

申请号：US16174713

申请日：2018-10-30

Applicant: Cisco Technology, Inc.

Inventor： Mitesh Mukesh Kanjariya ,  Ashutosh Gupta ,  Manoj Kumar Pandey

IPC: H04L12/28 ,  H04L12/723 ,  H04L12/46 ,  H04L12/18 ,  H04L12/755 ,  H04L12/751

Abstract: Embodiments of the present disclosure relate to assisting forwarding of multicast traffic over Ethernet Virtual Private Network (EVPN) from a multicast source to a host multi-homed to multiple provider edge (PE) devices. Embodiments are based on the inclusion of an Ethernet Segment Identification (ESI) to EVPN type-6 routes advertised by PE devices which received a multicast Join message. Other PE devices receiving such routes are able to determine whether they belong to the ES identified by the ESI and to determine whether they are designated forwarders (DFs) for the host. Furthermore, PE devices which are the DFs are configured to re-originate the EVPN type-6 routes, i.e. re-send the advertisements, indicating themselves as DFs. This ensures that a remote PE device associated with the multicast source will also send multicast traffic to such DF PE devices, which, in turn, would allow the multicast traffic to successfully reach the host.