Skip to main content
NetApp Knowledge Base

Path MTU black holes can result in network performance/connectivity issues

  1. Last updated
  2. Save as PDF
Views:
720
Visibility:
Public
Votes:
2
Category:
clustered-data-ontap-8
Specialty:
hw
Last Updated:

Applies to

Environments where endpoints support a larger MTU(Maximum Transition Unit) than the smallest MTU in the path.

Issue

  • User environments where Path MTU is not successfully discovered can experience issues with both network performance as well as general connectivity issues.
  • The performance issues might stem from intermediate devices performing IP fragmentation on large MTU packets, or endpoints having to reassemble.
  • Connectivity issues usually occur when a large MTU frame fails to traverse the network, leading to the re-transmission of this packet until one of the endpoints gives up and resets the connection.

 

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.