[ofa-general] IPoIB connections falling off

[Moni Shoua]

Ira Weiny wrote:
> Check your multicast group membership and forwarding tables on the switches.
> 
> We have had similar issues and have found that some nodes fail to join the multicast groups for various reasons.
> 
> Ira
I think that a good start would be to send the following 
1. kernel neigh table
ip neigh show

2. ipoib path cache
cat /sys/kernel/debug/ipoib/ib0_path
(you probably need to mount debugfs first with 'mount -t debugfs none /sys/kernel/debug')

2. ipoib mcast joins
cat /sys/kernel/debug/ipoib/ib0_mcg