US 11,855,887 B2
Data flow redirection method and system, network device, and control device
Haibo Wang, Beijing (CN); Shunwan Zhuang, Beijing (CN); Yuan Rao, Beijing (CN); and Ruiqing Cao, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Jun. 17, 2020, as Appl. No. 16/904,129.
Application 16/904,129 is a continuation of application No. 16/195,103, filed on Nov. 19, 2018, granted, now 10,715,430.
Application 16/195,103 is a continuation of application No. PCT/CN2017/084373, filed on May 15, 2017.
Claims priority of application No. 201610332658.1 (CN), filed on May 18, 2016.
Prior Publication US 2020/0389395 A1, Dec. 10, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 45/00 (2022.01); H04L 45/02 (2022.01); H04L 47/122 (2022.01); H04L 45/64 (2022.01); H04L 69/329 (2022.01)
CPC H04L 45/54 (2013.01) [H04L 45/02 (2013.01); H04L 45/22 (2013.01); H04L 45/38 (2013.01); H04L 47/122 (2013.01); H04L 45/64 (2013.01); H04L 69/329 (2013.01)] 35 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving a control message from a control device, wherein the control message carries redirection routing information of a data flow and a redirection routing indication, wherein the redirection routing information comprises destination address information of the data flow and redirection next hop information of a network device, wherein the redirection routing indication comprises a conversion indication and a conversion description, wherein the redirection routing indication instructs the network device to redirect the data flow and instructs the network device to convert the redirection routing information of the data flow into a forwarding entry in a target forwarding table, wherein the control message is a Border Gateway Protocol (BGP) Flow Specification (FlowSpec) message, wherein a traffic action field in an extended community attribute of the BGP FlowSpec message carries the conversion indication, and wherein a community field in a wide community attribute of the BGP FlowSpec message carries the conversion description; and
installing the redirection routing information into the forwarding entry in the target forwarding table.