Tapraj Singh, 5010 Meadow Lake Dr, Danville, CA 94506

2021002, Jan 21, 2021

Jul 17, 2019

16/514942

- San Jose CA, US
Samir THORIA - Saratoga CA, US
Patrice BRISSETTE - Gatineau, CA
Mei ZHANG - Cary NC, US
Tapraj SINGH - Danville CA, US

H04L 12/715
H04L 12/46
H04L 12/721
H04L 12/761
H04L 29/12

Techniques for routing traffic across different virtual local area networks (VLANs) within a single bridge domain are described. One technique includes receiving at a first network device a packet from a second network device on a first interface of multiple interfaces within a bridge domain at the first network device. Attachment circuit information associated with the packet is determined. An information element that includes an indication of the attachment circuit information is generated. The information element is transmitted to the third network device.

2020023, Jul 23, 2020

Apr 8, 2020

16/843297

- San Jose CA, US
Samir Thoria - Saratoga CA, US
Tapraj Singh - San Ramon CA, US

H04N 21/6405
H04L 12/46
H04L 29/06
H04N 21/24
H04N 21/222

A method is performed by a first provider edge (PE) of a redundancy group including provider edges configured with an Ethernet virtual private network (EVPN) segment identifier (EVI) and an Ethernet segment identifier (ESI) and that are multi-homed to a customer edge (CE). The method includes, upon receiving from the CE a join request including a group address for a multicast stream, electing a designated forwarder (DF) for the multicast stream. The electing includes: computing for each PE a respective affinity for the DF as a function of a respective address of the PE, the EVI, and the group address; and determining which PE has a largest affinity. The method further includes, if the first PE has the largest affinity or does not have the largest affinity, configuring the first PE as the designated forwarder or not configuring the first PE as the designated forwarder for the multicast stream, respectively.

2019022, Jul 18, 2019

Mar 5, 2019

16/293133

- Sunnyvale CA, US
Tapraj Singh - San Ramon CA, US
Sunesh Rustagi - San Jose CA, US

H04L 12/26
H04L 12/24
H04L 12/703
H04L 12/46

A method and network device to execute an Ethernet Virtual Private Network (EVPN) protocol to configure the network device to participate as one of a plurality of customer edge (CE) routers that provide an active-active configuration for an Ethernet segment coupling the CE routers to a plurality of provider edge (PE) routers, wherein the processor is configured to determine whether a packet that is to be forwarded is an operations, administration, and management (OAM) packet; in response to determining that the packet comprises an OAM packet, replicate the OAM packet for one or more interface links of an Ethernet segment associated with the CE router; configure forwarding instructions to the one or more interface links of the Ethernet segment associated with the CE router; and forward the OAM packet and the replicated OAM packets to the PE routers.

2019016, May 30, 2019

Nov 30, 2017

15/827376

- San Jose CA, US
Samir Thoria - Saratoga CA, US
Tapraj Singh - San Ramon CA, US

H04N 21/6405
H04W 8/00
H04L 12/46

A method is performed by a first provider edge (PE) of a redundancy group including provider edges configured with an Ethernet virtual private network (EVPN) segment identifier (EVI) and an Ethernet segment identifier (ESI) and that are multi-homed to a customer edge (CE). The method includes, upon receiving from the CE a join request including a group address for a multicast stream, electing a designated forwarder (DF) for the multicast stream. The electing includes: computing for each PE a respective affinity for the DF as a function of a respective address of the PE, the EVI, and the group address; and determining which PE has a largest affinity. The method further includes, if the first PE has the largest affinity or does not have the largest affinity, configuring the first PE as the designated forwarder or not configuring the first PE as the designated forwarder for the multicast stream, respectively.

2018022, Aug 9, 2018

Apr 4, 2018

15/945671

- Sunnyvale CA, US
Zhaohui Zhang - Westford MA, US
Wen Lin - Andover MA, US
Tapraj Singh - San Ramon CA, US

H04L 12/18
H04L 12/761
H04L 12/46

Techniques are described for utilizing Protocol Independent Multicast Sparse Mode (PIM-SM) to transport BUM (broadcast, unknown unicast, and multicast) traffic in a Virtual Extensible LAN (VXLAN) underlay of a data center, where the BUM traffic is received on active-active, multi-homed Ethernet virtual private network (EVPN) interconnects between multiple physical data centers. For example, the techniques may readily be applied to support usage of PIM-SM where provider edge (PE) routers of the EVPN operate as gateways between the EVPN and the VXLAN spanning the data center interconnect.

2018017, Jun 21, 2018

Feb 19, 2018

15/898856

- Sunnyvale CA, US
Tapraj Singh - San Ramon CA, US
Sunesh Rustagi - San Jose CA, US
Arijit Paul - Cupertino CA, US
Vikas Vidyalal Patel - San Jose CA, US
Himanshu Agarwal - Bangalore, IN
Suneel Kumar Pentala - Santa Clara CA, US

Juniper Networks, Inc. - Sunnyvale CA

H04L 12/18
H04L 12/721
H04L 29/12
H04L 12/741
H04L 12/751

In one example, a method includes performing L2 learning of a C-MAC address included in a first L2 data message by a first provider edge (PE) router included in an Ethernet Segment of a Provider-Backbone Bridging Ethernet Virtual Private Network (PBB-EVPN); sending to a second PE router within the Ethernet Segment an L2 control message comprising the C-MAC address and a B-MAC address corresponding to the Ethernet Segment of the PBB-EVPN, wherein the L2 control message informs the second PE router of the reachability of the C-MAC address through the first PE router; receiving, by the first PE router and from the second PE router, a second L2 data message as unicast traffic destined for the C-MAC address; and forwarding the second L2 data message to the first CE router.

2018003, Feb 1, 2018

Aug 14, 2017

15/676181

- Sunnyvale CA, US
Shrinivasa Kini - Santa Clara CA, US
Siddharth A. Tuli - Sunnyvale CA, US
Tapraj Singh - San Ramon CA, US
Sunesh Rustagi - San Jose CA, US

H04L 12/46

A provider edge (PE) device may receive an indication to perform a designated forwarder (DF) election associated with a network segment that includes the PE device, one or more other PE devices, and a client edge (CE) device. The PE device, the one or more other PE devices, and the CE device may be associated with an Ethernet virtual private network (EVPN) that includes a group of EVPN instances (EVIs). The PE device may perform the DF election in order to determine election information associated with the PE device. The election information may include information associated with a particular EVI, of the group of EVIs, for which the PE device is to act as a DF. The PE device may provide the election information to the CE device to cause the CE device to provide traffic, associated with a particular VLAN included in the particular EVI, to the PE device.

2017025, Aug 31, 2017

Feb 26, 2016

15/055061

- Sunnyvale CA, US
Tapraj Singh - San Ramon CA, US
Vikas Vidyalal Patel - San Jose CA, US
Swamy Sadashivaiah Renu Kananda - Sunnyvale CA, US

H04L 12/721
H04L 12/707
H04L 12/46

Techniques are described to provide split-horizon packet forwarding so as to ensure that packets from the customer network that are injected into the provider backbone bridging Ethernet Virtual Private Network (PBB-EVPN) by one of the provider edge (PE) devices of the multi-homed Ethernet segment are not forwarded back toward the customer network by a different PE device connected to the same multi-homed Ethernet segment. For example, a method may comprise receiving a packet via a core-facing interface of a first PE device, determining the Ethernet segment associated with the PE devices by a lookup operation based on keys of the packet; in response to determining the Ethernet segment, supplanting the core-facing interface of the first PE device with a virtual interface associated with the keys, and forwarding the packet to a second CE device without forwarding the received packet back to the Ethernet segment associated with the first PE device.