How are TCP timestamps generated and why do they wrap 5 minutes after boot?

Solution Verified - Updated -

Issue

  • How are TCP timestamps generated?
  • What is the TCP timestamp generation scheme?
  • Are TCP Timestamps based on system uptime only?
  • Why does tsval wrap after 5 minutes of system boot on RHEL?

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5
  • TCP connection with TCP Timestamps enabled

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content