Invention Grant
- Patent Title: Failure handling for active-standby redundancy in EVPN data center interconnect
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Application No.: US15085533Application Date: 2016-03-30
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Publication No.: US10666500B2Publication Date: 2020-05-26
- Inventor: Tapraj Singh , Wen Lin , SelvaKumar Sivaraj , Rukesh Dorai , Sunesh Rustagi
- Applicant: Juniper Networks, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Juniper Networks, Inc.
- Current Assignee: Juniper Networks, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Shumaker & Sieffert, P.A.
- Main IPC: H04L12/24
- IPC: H04L12/24 ; H04L12/723 ; H04L12/741 ; H04L12/721 ; H04L12/703 ; H04L12/46 ; H04L12/707 ; H04L12/26

Abstract:
Techniques are described for avoiding traffic black-holing in a multi-homed Ethernet virtual private networks (EVPNs) in which a customer device (CE) is multi-homed to a plurality of multi-homing provider edge devices (PEs) via respective links of an Ethernet segment. An overlay network is created over the Ethernet segment, and the multi-homing PEs of the EVPN are configured with a common anycast IP address for respective virtual network interfaces. Upon election as active designated forwarder (DF) for the EVPN, the DF PE of the multi-homing PEs advertises toward the customer network an IGP metric for the anycast IP address that is lower than the IGP metric(s) advertised by any of the non-DF standby PE routers segment to direct the CE to forward network packets from the customer network to the DF PE over the respective link of the Ethernet segment.
Public/Granted literature
- US20170288948A1 FAILURE HANDLING FOR ACTIVE-STANDBY REDUNDANCY IN EVPN DATA CENTER INTERCONNECT Public/Granted day:2017-10-05
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