Did you rebuild the drivers for the new kernel ?? try not using the
distribution-ofed.


On Thu, Jul 4, 2013 at 10:31 AM, Semi <[email protected]> wrote:

> It not depends, I got this message if ipv6 is switched off or on. Only in
> SL6.4!
>
> On 04-Jul-13 16:00, Sandy Philpott wrote:
>
>> Have you recently turned on IPv6?  We stumbled across the same error and
>> after investigating, found this info...
>>
>>  From the QLogic Fabric Manager user manual:
>>
>>      "Most IB switches have a limitation of 1024 multicast LIDs (MLIDs).
>> However IPv6 (and possibly other applications) can create numerous
>> multicast groups. In the case of IPv6, there is one Solicited-Node
>> multicast group per Channel Adapter port. This results in an excessively
>> large number of multicast groups.
>>
>>
>> Furthermore, while OpenSM simply maxes out available MLIDs, the QLogic
>> Fabric Manager will allow the first 500 groups to be distinct, after which
>> it will start sharing groups in order to prevent multicast join failures:
>>
>>      "By default the SM will share a pool of 500 LIDs among all IPv6
>> solicited-node multicast groups. Thus in fabrics of 500 nodes or less, a
>> unique LID will be used for every multicast group. However in larger
>> fabrics, LIDs will be shared so that there are still over 500 unique LIDs
>> available for other multicast groups, such as the IPoIB broadcast group and
>> other multicast groups which may be used by applications.
>>
>> ----- Original Message -----
>> From: "Semi" <[email protected]>
>> To: 
>> "SCIENTIFIC-LINUX-USERS@**LISTSERV.FNAL.GOV<[email protected]>"
>> <SCIENTIFIC-LINUX-USERS@**listserv.fnal.gov<[email protected]>
>> >
>> Sent: Thursday, July 4, 2013 5:10:26 AM
>> Subject: Infiniband errors on SL6.4
>>
>> This error I got only on SL6.4. (6.1-6-3 OK). Any idea?
>> ib0: multicast join failed for ff12:401b:ffff:0000:0000:0000:**ffff:ffff,
>> status -22
>>
>

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