Encapsulating IPsec ESP in UDP for Load-balancing

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual)
Authors Xiaohu Xu  , Shraddha Hegde  , Dacheng Zhang  , Liang Xia 
Last updated 2020-09-12 (latest revision 2020-03-11)
Stream (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Additional Resources
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


IPsec Virtual Private Network (VPN) is widely used by enterprises to interconnect their geographical dispersed branch office locations across the Wide Area Network (WAN) or the Internet, especially in the Software-Defined-WAN (SD-WAN) era. In addition, IPsec is also increasingly used by cloud providers to encrypt IP traffic traversing data center interconnect WAN so as to meet the security and compliance requirements, especially in financial cloud and governmental cloud environments. To fully utilize the bandwidth available in the WAN or the Internet, load balancing of IPsec traffic over Equal Cost Multi-Path (ECMP) and/or Link Aggregation Group (LAG) is much attractive to those enterprises and cloud providers. This document defines a method to encapsulate IPsec Encapsulating Security Payload (ESP) packets over UDP tunnels for improving load-balancing of IPsec ESP traffic.


Xiaohu Xu (xiaohu.xxh@alibaba-inc.com)
Shraddha Hegde (shraddha@juniper.net)
Dacheng Zhang (dacheng.zhang@huawei.com)
Liang Xia (frank.xialiang@huawei.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)