US Patent 9929940 Update of MAC routes in EVPN single-active topology
Patent 9929940 was granted and assigned to Juniper Networks on March, 2018 by the United States Patent and Trademark Office.
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In general, techniques are provided for described herein that extend existing Ethernet Virtual Private Network (EVPN) protocol signaling mechanisms so that local, multi-homing PEs couple to an Ethernet segment can definitively convey their primary/backup designated forwarder (DF) status to any remote PE of the EVPN. In one example, this is accomplished by utilizing a new extended community attribute to each Ethernet A-D per EVI route advertised by each of the multi-homing PEs to specifically carry the advertising PE's primary or backup status. As such, any receiving remote PE need not rely on the arrival of individual MAC routes from a new primary PE and withdrawal of MAC routes from a former primary PE to update its forwarding information.
US Patent 09929940 Update of MAC routes in EVPN single-active topology US Patent 9929940 Update of MAC routes in EVPN single-active topology
US Patent 09929940 Update of MAC routes in EVPN single-active topology
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