Invention Grant
- Patent Title: Dynamic designated forwarder election per multicast stream for EVPN all-active homing
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Application No.: US16843297Application Date: 2020-04-08
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Publication No.: US11381883B2Publication Date: 2022-07-05
- Inventor: Ali Sajassi , Samir Thoria , Tapraj Singh , Mankamana Prasad Mishra
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Edell, Shapiro & Finnan, LLC
- Main IPC: H04N21/6405
- IPC: H04N21/6405 ; H04N21/24 ; H04N21/222 ; H04L12/46 ; H04L65/611 ; H04W8/00

Abstract:
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.
Public/Granted literature
- US20200236444A1 DYNAMIC DESIGNATED FORWARDER ELECTION PER MULTICAST STREAM FOR EVPN ALL-ACTIVE HOMING Public/Granted day:2020-07-23
Information query
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