On Friday 12 April 2013 02:13, Or Gerlitz wrote:
> Klaus Wacker <[email protected]> wrote:
> > Hi all, we are doing a project on IBM x-blades using Mellanox/RoCE. I have
> > some
> > difficulties to get RoCE based VLANs to run.
> > We are currently on Linux 3.8. No OFED material involved.
> > While non-VLAN devices work ok, i experience the following on VLAN devs
> > - a GID for the VLAN is created and we use the proper index for gid source
> > addr.
> > - a ping on the VLAN-device runs ok
> > - rdma/roce traffic fails in that the sender overruns the send retry count.
>
> Do you have any evidence that the packets are actually crossing the
> switch? the way we debug RoCE connectivity issues is configuring port
> mirroring on the switch and
> capture the mirrored packets on the host where packets are mirrored,
> and feed them to wireshark (the official/latest versions support
> parsing of RoCE/IB packets), on that host you can also observe L2
> mac/vlan header of the packets to see if it matches what you expected.
> But even before that, I would check the switch counters to see the
> packets aren't dropped.
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Thanks, Or!
Klaus,
In addition, please provide us with the following information:
1. Which ConnectX FW version are you using?
2. Are you using RC or UD qp? (I assume RC if you have a retry count failure,
but I would like to be sure).
3. Can you successfully run ucmatose? (tests rdma library for RC connections).
To run ucmatose:
on server: ucmatose
on client: ucmatose -s <IP of desired Mellanox ETH device
(ethXX)>
-Jack
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