[openib-general] [Bug 266] IPoIB multicast does not work with RHEL4 U4

[Scott Weitzenkamp (sweitzen)]

The OFED 1.1 IPoIB release notes state "5. On RedHat EL 4 up4, ipoib
multicast group membership does not work due to missing code in the
kernel which was available in u3 and removed in u4.", which is a good
hint, but I just want to clarify that U4 can only receive multicast from
U4, and U4 sends multicast to all nodes.

Scott Weitzenkamp
SQA and Release Manager
Server Virtualization Business Unit
Cisco Systems
 

> -----Original Message-----
> From: Michael S. Tsirkin [mailto:mst at mellanox.co.il] 
> Sent: Friday, December 08, 2006 3:08 AM
> To: Scott Weitzenkamp (sweitzen)
> Cc: openib-general at openib.org
> Subject: Re: [Bug 266] IPoIB multicast does not work with RHEL4 U4
> 
> This is a bug in RHEL4 U4.
> The issue is documented in OFED release notes, the solution is
> is to stay with U3.
> 
> Quoting r. bugzilla-daemon at openib.org <bugzilla-daemon at openib.org>:
> Subject: [Bug 266] IPoIB multicast does not work with RHEL4 U4
> 
> http://openib.org/bugzilla/show_bug.cgi?id=266
> 
> 
> 
> 
> 
> ------- Comment #4 from sweitzen at cisco.com  2006-12-07 16:41 -------
> What OS and kernel are you using?  I just took a closer look 
> on RHEL4 U4
> 2.6.9-42.Elsmp x86_64, and I am seeting the same problem with 
> OFED 1.1,
> where sending IP multicast traffic causes the data to go to all hosts.
> I do not see this problem when the sender is SLES10 i686 or RHEL4 U3.
> 
> 
> > -----Original Message-----
> > From: openib-general-bounces at openib.org 
> > [mailto:openib-general-bounces at openib.org] On Behalf Of Sean Hubbell
> > Sent: Wednesday, December 06, 2006 9:53 AM
> > To: openib-general at openib.org
> > Subject: [openib-general] Multicast Group Routing Question
> > 
> > Hello,
> > 
> >   I was testing our code and noticed that when I send data using 
> > multicast over our ib0 interface, all of the infiniband 
> > switches route 
> > the data to each switch and each node instead of a node that has an 
> > application listening to the interface like Ethernet. Is this 
> > by design?
> > 
> > Thanks in advance,
> > 
> > Sean
> 
> 
> 
> 
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