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Status Not under consideration
Workspace PowerVM VIOS
Created by Guest
Created on Dec 8, 2015

PowerVM - Add MTU check to LPM Verification

System: PowerVM
Actor: Add MTU check to LPM verification

The verification phase of PowerVM serves to provide a method of determining if a LPM will be successful

Description: We recently had a series of systems fail after LPM due to MTU mismatch. We are looking to get MTU checked as a part of the LPM Verification for each virtual adapter at the LPAR level and at the SEA/Physical level on the VIO servers between systems.

Idea priority Low
  • Guest
    May 3, 2016

    .We cannot look to LPM validation to solve all networking misconfiguration.

  • Guest
    Dec 12, 2015

    There are two issues.

    1) When the SEA on the source server is configured with Jumbo mtu, but the SEA on the destination server is not enabled with Jumbo mtu, you don't just have LPM problem, there is a network configuration problem overall. The clients on the two servers cannot communicate reliably.

    2) The fact a SEA is enabled with Jumbo mtu, it doesn't mean that every client served by the SEA requires Jumbo mtu. Some of the clients served by the SEA may very well use standard mtu.

  • Guest
    Dec 9, 2015

    Creating a new RFE based on Community RFE #81296 in product PowerVM VIOS.