A fix is available
APAR status
Closed as program error.
Error description
Linux guests using the HiperSockets Bridge on a VSwitch lose connectivity after relocation and source system is SHUTDOWN. The issue relates to moving the Active Bridgeport Controller and Take-Over activity on the Global VSwitch when shutting down the source system.
Local fix
Apply PTF
Problem summary
**************************************************************** * USERS AFFECTED: All users of Global VSwitches with * * HiperSockets Bridgeports connected * * during SHUTDOWN processing. * **************************************************************** * PROBLEM DESCRIPTION: * **************************************************************** * RECOMMENDATION: APPLY PTF * **************************************************************** In preparation for a shutdown of an SSI member, all guests using HiperSockets connected to a VSwitch via a HiperSockets Bridge were relocated to a second SSI member and maintained connectivity. When the first member was shutdown, there was no connectivity to the HiperSockets guests on the second member. To restore connectivity, the first member had to be brought back up or the VSwitch had to be detached and recreated.
Problem conclusion
In the case of a shutdown, there is an abnormal termination of the OSA uplink devices associated with a Global VSwitch. This failure caused the OSA to go into a "MAC Address take-over" operation and a remaining active network connection sharing the same LAG port will take over data transfer operations through the IVL data plane. This remains until the failing OSA is restored. It is the interaction of the take-over operation with the movement of the Active HiperSockets bridgeport controller that leads to the connectivity loss. To address this, shutdown processing is updated to gracefully terminate the network connections for the uplinks associated with Global VSwitches and any Bridge Ports.
Temporary fix
Comments
APAR Information
APAR number
VM66522
Reported component name
VM CP CP
Reported component ID
568411202
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-04-07
Closed date
2021-08-27
Last modified date
2022-12-13
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UM35900 UM35901
Modules/Macros
HCPLAN HCPMSS HCPSLMBK HCPSWM HCPSWU HCPVNS HCPWRP HCPWRPBK
Fix information
Fixed component name
VM CP CP
Fixed component ID
568411202
Applicable component levels
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
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Document Information
Modified date:
13 December 2022