Skip to main content
NetApp Knowledge Base

CONTAP-475236: IPsec can refuse new negotiations due to a negative count of half open connections

  1. Last updated
  2. Save as PDF
Views:
16
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
core
Last Updated:

Issue

  • strongSwan maintains a count of the number of half open connections it has during IPsec negotiations.
  • Each node has its own strongSwan task and thus has its own count.
  • In some situations, the counter (an unsigned integer) can go negative which is then treated as a very large number of half open connections.
  • strongSwan refuses any new negotiations if the half open connection counter is greater than 200.

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.