US 12,452,171 B2
Enhanced service node network infrastructure for L2/L3 GW in cloud
Xurui Huang, Shanghai (CN); Bo Sun, Shanghai (CN); and Yuefeng Jiang, Shanghai (CN)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Apr. 10, 2024, as Appl. No. 18/631,389.
Application 18/631,389 is a continuation of application No. 18/344,381, filed on Jun. 29, 2023, granted, now 12,015,555.
Claims priority of provisional application 63/494,413, filed on Apr. 5, 2023.
Prior Publication US 2024/0340240 A1, Oct. 10, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 45/745 (2022.01); H04L 45/28 (2022.01); H04L 45/76 (2022.01); H04L 49/00 (2022.01)
CPC H04L 45/745 (2013.01) [H04L 45/28 (2013.01); H04L 45/76 (2022.05); H04L 49/70 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for managing Layer 2 (L2) and Layer 3 (L3) policies comprising:
routing traffic from a first virtual machine (VM) to a first centralized gateway (CGW) through an L2 overlay fabric, wherein the first CGW is included within at least one Service Node, wherein the at least one Service Node includes a centralized policy for both L2 functions and L3 functions;
translating a source Internet Protocol (IP) address of the traffic from a private IP address of the first VM to a floating IP address;
routing, based on the floating IP address, the traffic within the at least one Service Node;
translating the floating IP address to a private IP address of a destination VM; and
routing the traffic from a second CGW that integrates both L2 gateways and L3 gateways to the destination VM.