VM Host Has No Connectivity When Point to Point Host is Stopped.

 
 APAR Identifier ...... PQ60532      Last Changed ........ 02/08/12
 VM HOST HAS NO CONNECTIVITY WHEN POINT TO POINT HOST IS STOPPED.
 
 Symptom ...... IN INCORROUT         Status ........... CLOSED  PER
 Severity ................... 3      Date Closed ......... 02/08/08
 Component .......... 5735FAL00      Duplicate of ........
 Reported Release ......... 420      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   : UQ68842 not available yet
 Release 410   : UQ68843 not available yet
 Release 420   : UQ68844 not available yet
 Release 430   : UQ68845 not available yet
 
 Parent APAR:
 Child APAR list:
 
 ERROR DESCRIPTION:
 When a device is deleted or stopped, MPROUTE drops
 multicast group membership on all interfaces with the same
 IP Address.
 VM TCPIP no longer has connectivity to any host.
 
 LOCAL FIX:
 All LINKs defined in the HOME statements of the PROFILE TCPIP
 must have their own I/P address.
 
 PROBLEM SUMMARY:
 ****************************************************************
 * USERS AFFECTED: All users of MPRoute                         *
 ****************************************************************
 * PROBLEM DESCRIPTION: When an interface is stopped or         *
 *                      deleted, MPROUTE drops multicast group  *
 *                      membership on all devices with the      *
 *                      same IP address.                        *
 ****************************************************************
 * RECOMMENDATION: APPLY PTF                                    *
 ****************************************************************
 When a device is stopped or dropped, MPROUTE tells the TCP/IP
 stack to remove that device from its multicast groups.  Since
 the removal is based on the IP address of the device, all
 devices that share the same IP address will be dropped from
 the multicast group.
 
 PROBLEM CONCLUSION:
 MPRoute code was modified to keep track of how many devices
 with the same IP address join a multicast group, and to only
 drop multicast membership for an IP address when the last
 device was deleted or stopped.
 The TCP/IP stack was also changed to ensure that all devices
 that share IP address are correctly joined to multicast groups.
 
 TEMPORARY FIX:
 
 COMMENTS:
 
 MODULES/MACROS:   H390MCAS INTBL    MPROUTE  MSMPROUT TCPIP
 TCSOCKRE
 
 SRLS:      NONE
 
 RTN CODES:
 
 CIRCUMVENTION:
 
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