US 11,811,720 B2
Efficient ARP packet propagation
Amit Dattatray Ranpise, San Jose, CA (US); Kamlesh Raghuvanshi, Saratoga, CA (US); Kallol Mandal, Sausalito, CA (US); Rajesh Kumar Semwal, Sunnyvale, CA (US); and Alton Lo, Fremont, CA (US)
Assigned to ARISTA NETWORKS, INC., Santa Clara, CA (US)
Filed by Arista Networks, Inc., Santa Clara, CA (US)
Filed on Feb. 4, 2022, as Appl. No. 17/665,419.
Application 17/665,419 is a continuation of application No. 16/749,846, filed on Jan. 22, 2020, granted, now 11,252,125.
Prior Publication US 2022/0231986 A1, Jul. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 61/103 (2022.01); G06F 9/54 (2006.01); H04L 45/745 (2022.01); H04L 12/46 (2006.01); H04L 101/622 (2022.01)
CPC H04L 61/103 (2013.01) [G06F 9/546 (2013.01); H04L 12/4641 (2013.01); H04L 45/745 (2013.01); H04L 2101/622 (2022.05)] 20 Claims
OG exemplary drawing
 
1. A method for providing address resolution reply messages, the method comprising:
receiving, at a first router in a first network, an address resolution request message from a second router in a second network via a layer 2 data center interconnect link;
generating, for a pending address resolution requests table, an entry for the address resolution request message, the entry including an identifier of the layer 2 data center interconnect link;
receiving a route advertisement;
extracting a network layer address from the route advertisement;
determining the pending address resolution requests table includes an entry including the network layer address; and
in response to determining that the pending address resolution requests table includes an entry including the network layer address:
extracting a link layer address from the route advertisement;
generating an address resolution reply message, of the address resolution reply messages, comprising the network layer address and the link layer address; and
sending the address resolution reply message to the second router via the layer 2 data center interconnect link.