Direct links to fixes
Interim fix for IBM MQ Appliance 9.2.1 with APAR(s) IT35457 IT33213 IT35199. Build ID: p921-L201112.1-IT35457_P
Interim fix for IBM MQ Appliance 9.2.0.1 with APAR(s) IT35457 IT33213 IT35199. Build ID: p920-001-200918-IT35457A_P
Interim fix for IBM MQ Appliance 9.1.0.7 with APAR(s) IT35457 IT33213. Build ID: p910-007-201126-IT35457A_P
Interim fix for IBM MQ Appliance 9.2.1 with APAR(s) IT34178 IT33213. Build ID: p921-L201112.1-IT34178_P
APAR status
Closed as program error.
Error description
After a firmware upgrade the following errors were reported for interfaces that belong to a link aggregation interface. The link on interface 'eth22' went down outside of an administrator initiated change window. ...[network][error] The appliances are no longer replying to LLDP request causing the switch interfaces to go in error-disable mode. After disabling LLDP on those impacted interfaces on switch side brought the situation back to normal.
Local fix
Disable LLDP on the switch side for the affected interfaces.
Problem summary
**************************************************************** USERS AFFECTED: MQ appliance users with Link Aggregation Interface(s) configured using 10 GB Ethernet ports and upgrading to MQ version 9.1.0.6 or 9.2.0.0 or a firmware version which contains the fix for the APAR IT32866. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: The 10 GB network card in the appliance has an integrated LLDP Engine. which processes LLDP frames and hence does not forward them to the operating system. However the appliance operating system requires the LLDP information when LCAP is configured. The APAR IT32866 upgrades NVM firmware for 10GB Ethernet. The new firmware enabled the LLDP agent on the 10 GB Network card by default and because of that LLDP frames were not forwarded to the OS, causing in failures in Link Aggregation.
Problem conclusion
** Please note that following the inclusion of this APAR in the MQ 9.2.0.2 release, the property name was changed for consistency with other IBM appliance products and versions. The change of property name in the 9.2 release is documented under IT33213. The text below is also updated accordingly to describe the version differences. ** The IBM MQ Appliance code has been modified to provide an option to disable/enable LLDP hardware offload on the 10 GB network cards. If the connected network switch is LLDP-enabled and the interface is used in a link aggregation, then LLDP hardware offload should be disabled on the 10GB interface(s) as described below: IBM MQ Appliance 9.2.0.2 firmware only: On CLI - link-layer-discovery-protocol (from config; ethernet [interface]) On WebUI - Link Layer Discovery Protocol (from the interface settings page) IBM MQ Appliance 9.1.0.8 / 9.2.0.3 / 9.2.3 and later firmwares: On CLI - lldp-hardware-offload (from config; ethernet [interface]) On WebUI - Offload LLDP to hardware (from the interface settings page) --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.1 LTS 9.1.0.8 v9.2 LTS 9.2.0.2 v9.x CD 9.2.3 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT33213
Reported component name
MQ APPLIANCE M2
Reported component ID
5737H4700
Reported release
915
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-06-16
Closed date
2021-02-25
Last modified date
2021-05-12
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
MQ APPLIANCE M2
Fixed component ID
5737H4700
Applicable component levels
[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS5K6E","label":"IBM MQ Appliance"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"915"}]
Document Information
Modified date:
13 May 2021