Invention Grant
- Patent Title: EVPN multihoming optimizations for ethernet segment connection interruptions
-
Application No.: US16774519Application Date: 2020-01-28
-
Publication No.: US11438193B2Publication Date: 2022-09-06
- Inventor: Amit Dattatray Ranpise , Rajesh Kumar Semwal
- Applicant: Arista Networks, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: Arista Networks, Inc.
- Current Assignee: Arista Networks, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Fountainhead Law Group P.C.
- Main IPC: H04L45/50
- IPC: H04L45/50 ; H04L12/46 ; H04L9/40 ; H04W76/11 ; H04L45/00

Abstract:
Techniques described herein provide for expediting routing convergence in EVPN with multihomed ethernet segment when one of the redundant devices loses connection to the ethernet segment. When a first redundant device receives EVPN auto discovery (AD) route advertising an ethernet segment from a second redundant device, it creates an entry for a forwarding table. The entry has, for an advertised MAC address, a local identifier of the ethernet segment (marked as active next hop) and the identifier of the second network device (marked as backup next hop). When a packet for that MAC address is received, the first redundant device routes the data using data from the entry. In particular, the first redundant device uses the local identifier of the ethernet segment as next hop when the ethernet segment link is active; and uses the identifier of the second network device as next hop when the ethernet segment is down.
Public/Granted literature
- US20210234727A1 EVPN MULTIHOMING OPTIMIZATIONS FOR ETHERNET SEGMENT CONNECTION INTERRUPTIONS Public/Granted day:2021-07-29
Information query