Howto activate multicast for NW 7.40 kernel?

[Former Member]

Hi experts,

Dispatcher is not stating after the kernel upgarde to 741.

Sat Apr  5 07:28:05 2014

NiDgSendToMulticastAddrLocalCheck: NiPeek for hdl2 failed with rc = -5

***LOG Q0I=> NiISetSockOpt: setsockopt (126: Cannot assign requested address) [/bas/741_REL/src/base/ni/nixxi.cpp 9154]

*** ERROR => NiISetSockOpt: SiSetSockOpt failed for hdl 19/sock 8

    (SI_EADDR_NAVAIL/126; I6; DG; IPPROTO_IPV6-IPV6_JOIN_GROUP) [nixxi.cpp    9154]

*** ERROR => NiIDgHdlGroupAdm: failed to join ff01::e000:82 on interface 0.0.0.0 [nixxi.cpp    9572]

NiDgSendToMulticastAddrLocalCheck: NiDgHdlJoinGroup for hdl1 to ff01::e000:82 failed with rc = -10

*** ERROR => DpCheckMulticast: NiDgSendToMulticastAddrLocalCheck failed (-10) [dpInit.c     4046]

*** Fatal Error

***

*** Multicast datagrams do not work properly on this host.

***

*** Description

***

*** Multicast datagrams are needed for the server internal communication.

***

Any valuable input will be highly appreciable

Regards...JK

[Former Member]

We Patched AIX to 7100-03 that it works ! (oslevel -r)

[Sriram2009]

Hi Nair

Could you check this SAP Note

1932555 - Dispatcher startup issue with SAP Kernel 740

Regards

Sriram

[ACE-SAP]

Hello

You should find a solution in the here under note.

Regards

1931675 - IP multicast configuration for dispatcher wakeup mechanism

If needed (because IP addresses from this range are occupied by other applications or network devices in the subnet),

the base address and the offset can be configured with the profile parameters:

rdisp/request_queue_mc_address_base

rdisp/request_queue_mc_address_offset