[ofa-general] OpensSM and Multiple Ports

[Hal Rosenstock]

On 8/4/07, Stanley Sufficool <stanleysufficool at roadrunner.com> wrote:
> On Sat, 2007-08-04 at 06:55 -0400, Hal Rosenstock wrote:
>
> On 8/3/07, Stanley Sufficool <stanleysufficool at roadrunner.com> wrote:
> I am
> trying to get opensm to manage two separate subnets, one per IB port on
> an
> Infinihost II PCIe HCA. I can specify PORT=1 and opensmd will start
>
> without error. On the second sm management node, I start with PORT=2 in
>
> opensm.conf and opensm fails with a timeout error.

Not sure what PORT is
> but you can start OpenSM on a specific port by
using the -g (or -guid)
> option. Something like:
opensm -g=0x12345678 where 0x12345678 is the port
> (not node) GUID
>
> There are 2 options for specifying the port in opensm.conf, one is the port
> GUID and one is the port number (PORT=1) . OpenSM seems to correctly derive
> the port GUID from the port number,

Looks to me like PORT_NUM (not PORT) is only used in a RedHat init
script. Vlad can better comment on both opensm.conf and the init
scripts in OFED for OpenSM.

> however I will try using the GUID
> instead.

Did this work ?

> I am using Gentoo Linux with the mlx HCA and MAD, UMAD, etc... built
> into
> kernel 2.6.20.
>
> My goal is to get ipoib working. IPoIB is being
> flakey with duplicated
> ethernet MAC addresses ( MAC: 02:00:00:00:01 & :02
> ) . This may be resolved
> when opensm is working?

IPoIB won't work until
> the ports are brought up by the SM. Not sure
about the duplicated MACs. I
> don't understand this.

>
> Ethernet MAC addresses as shown in Windows ipconfig for the IBoIP
> interfaces. They are duplicated because the LIDs are not being renumbered by
> the manager.

I don't know how Windows derives its fake ethernet MACs for IPoIB but
if it uses LIDs, this makes sense.

-- Hal

> I am also hoping to get SRP with Windows initiators and a Linux
> target using
> the SRPT kernel module. But failing that, I will regress to
> iSCSI with hopes
> of a future iSER target/initiator support.
>
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