MPROUTE Routing Table Not Updated When CTC Link is Started
APAR Identifier ...... PQ52180 Last Changed ........ 01/10/31
MPROUTE ROUTING TABLE NOT UPDATED WHEN CTC LINK IS STARTED
Symptom ...... IN INOUT Status ........... CLOSED PER
Severity ................... 3 Date Closed ......... 01/10/23
Component .......... 5735FAL00 Duplicate of ........
Reported Release ......... 3A0 Fixed Release ............ 999
Component Name TCP/IP V2 FOR V Special Notice
Current Target Date .. Flags
SCP ...................
Platform ............
Status Detail: SHIPMENT - Packaged solution is available for
shipment.
PE PTF List:
PTF List:
Release 3A0 : UQ59103 available 01/10/30 (1000 )
Release 410 : UQ59104 available 01/10/30 (1000 )
Release 420 : UQ59105 available 01/10/30 (1000 )
Parent APAR:
Child APAR list:
ERROR DESCRIPTION:
Customer has a CTC connection defined between a Linux guest
and a VM host, which is connected to a remaining network by
two OSA QDIO adapters.
The VM TCP/IP host is first initialized, after which the Linux
guest is initialized. Following this, PINGs between the Linux
and VM hosts succeed, while those between the Linux guest and
hosts elsewhere in the network fail.
Recycling the VM MPROUTE server machine resolves this
situation. Investigating the problem reveals that the VM
TCP/IP server is not updating MPROUTE once an ERROR-STATUS
condition for the CTC connection has been cleared.
LOCAL FIX:
PROBLEM SUMMARY:
****************************************************************
* USERS AFFECTED: All users of MPRoute *
****************************************************************
* PROBLEM DESCRIPTION: The VM TCP/IP stack does not send a *
* status update to the MPRoute server *
* when an Error-Status condition for *
* a CTC connection has been cleared. *
****************************************************************
* RECOMMENDATION: APPLY PTF *
****************************************************************
The VM TCP/IP stack sends information to the MPRoute server
whenever interfaces change state. For most devices, a state
change is reflected in the DeviceStatus field of the DCB. For
CTC devices, however, the DeviceStatus may indicate that the
device is ready but the ErrorStatus flag in the LCB is set
to indicate that there is still a problem.
PROBLEM CONCLUSION:
TCTOCTC has been updated to call the CTCLinkStateChange
routine whenever the ErrorStatus changes. This will invoke
a call to the LinkStateChange routine in TCMIB.
LinkStateChange will check the new ErrorStatus against the
old ErrorStatus. If there is a change, an update will be
sent to the MPRoute server.
TEMPORARY FIX:
COMMENTS:
MODULES/MACROS: TCPIP TCTOCTC
SRLS: NONE
RTN CODES:
CIRCUMVENTION:
MESSAGE TO SUBMITTER:
|
