[ofa-general] opensm: bad multicast forwarding table entries

[Sasha Khapyorsky]

On 15:54 Wed 12 Nov     , akepner at sgi.com wrote:
> > ..... 
> > > So far, so good. But we also have r4i2n10, connected to the switch with
> > > lid 1533 port 7:
> > >
> > > switchguid=0x800690000002e50(800690000002e50)
> > > Switch  24 "S-0800690000002e50"         # "MT47396 Infiniscale-III Mellanox Technologies" base port 0 lid 1533 lmc 0
> > > ......
> > > [7]     "H-003048c2438a0000"[1](3048c2438a0001)                 # "r4i2n10 HCA-1" lid 771 4xDDR
> > >
> > > with this mft entry:
> > >
> > > Multicast mlids [0xc000-0xc3ff] of switch Lid 1533 guid 0x0800690000002e50 (MT47396 Infiniscale-III Mellanox Technologies):
> > >            0                   1                   2
> > >     Ports: 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4
> > >  MLid
> > > .....
> > > 0xc069                    x
> > >
> > > Any idea why "r4i2n10", with PortGid fe80::3048c2438a0001 would have a
> > > mft entry for the multicast group with MGID ff12601bffff::1ff26d289?

Any chance that port "r4i2n10" joins MGID ff12601bffff::1ff26d289 as
non-member?

You can run OpenSM with -V flag and track all joins.

Sasha