Infiniband Multicast join not working anymore with Melanox cards
Issue
- After updating the Infiniband machines to RHEL6.4 IB multicast join is not working any longer
- After Upgrading some machines to MRG-R 2.3 IB multicast join is not working any more. After downgrading to MRG-R 2.2 or after upgrading the remaining machines to MRG-R 2.3 everything works again.
ibping
was always working, but the MC join did not work anymore.- IPoIB is not affected by this.
Environment
- Red Hat Enterprise Linux (RHEL) 6.4
- Red Hat Enterprise MRG Realtime (MRG-R) 2.3 with
kernel-rt-3.6.11-rt28.20.el6rt.x86_64
or newer - Melanox Cards using the
mlx4_ib
driver
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.