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:
MESSAGE TO SUBMITTER:
|
