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Red Hat Bringing Multipath TCP To RHEL 8.3 As A Tech Preview

Written by Michael Larabel in Red Hat on 19 August 2020 at 06:49 AM EDT. 7 Comments

Red Hat confirmed today it is bringing Multipath TCP (MPTCP) to Red Hat Enterprise Linux 8.3 as a "tech preview" feature.

Multipath TCP is an extension of TCP to allow end-to-end delivery over multiple simultaneous TCP paths. Multipath TCP was upstreamed for Linux 5.6 as a means of greater TCP performance/efficiency and redundancy. MPTCP has been around for years and the reference implementation for Linux remained out-of-tree but this year is finally all in mainline. In kernels since Linux 5.6 there has continued to be more tuning/additions around MPTCP.

Red Hat engineers are back-porting the Multipath TCP code to their RHEL8 kernel for distributing as a tech preview option beginning in RHEL 8.3.

Making use of MPTCP and the setup steps involved are outlined in this Red Hat Developer blog post.

7 Comments

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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.