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1. (WO2018022731) MULTI-DESTINATION PACKET FORWARDING FOR A MULTI-HOMED DEVICE IN A VIRTUAL NETWORK

Pub. No.:    WO/2018/022731    International Application No.:    PCT/US2017/043908
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Thu Jul 27 01:59:59 CEST 2017
IPC: H04L 1/22
H04L 12/70
H04L 12/703
H04L 12/931
H04L 12/46
Applicants: BROCADE COMMUNICATIONS SYSTEMS, INC.
Inventors: NGUYEN, Lisa Hong
VASANTHA, Vijay Kumar
Title: MULTI-DESTINATION PACKET FORWARDING FOR A MULTI-HOMED DEVICE IN A VIRTUAL NETWORK
Abstract:
One embodiment of the present invention provides a switch. The switch includes a virtualization module, an update module, an acknowledgment module, and an election module. The virtualization module establishes a forwarding segment for an end device multi-homed with the switch and a second switch. The forwarding segment can be identified by a segment identifier persistent in the switch and the second switch. The update module constructs, for the second switch, a first route update message comprising an indicator value for the forwarding segment. The acknowledgment determines the indictor value in a second route update message from the second switch as an acknowledgment for the first route update message. If the switch receives the acknowledgment from a respective switch participating in the forwarding segment, the election module initiates a designated forwarder election for the forwarding segment. The designated forwarder is responsible for forwarding multi-destination traffic in the forwarding segment.