[openib-general] Multicast Group Routing Question

[Sean Hubbell]

Hal Rosenstock wrote:
> Hi Sean,
>
> On Wed, 2006-12-06 at 12:52, Sean Hubbell wrote:
>   
>> 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?
>>     
>
> It depends on what multicast group is being used and which end nodes
> have registered for that group as to where the data is routed.
>
> -- Hal
>   
Hey Hal,

  The multicast group I am sending data to is 224.10.10.x (not 
224.0.0.x) and I have no clients / nodes listening but the data is still 
being sent. I am using wwtop from warewulf to view the network load for 
each node. Does this make sense?

Sean