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Date: Mon, 21 Jul 2008 15:01:16 -0700
From: Andrew Sharp <andy.sharp@onstor.com>
To: Paul Negus <paul.negus@onstor.com>
Cc: Brian Stark <brian.stark@onstor.com>, Abdallah Harb
 <abdallah.harb@onstor.com>
Subject: numerous issues with SSC ethernet ports and direct connect
Message-ID: <20080721150116.42d5b1c6@ripper.onstor.net>
Organization: Onstor
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Howdy all,

We're seeing numerous issues with SSC ports, and direct connecting two
ports.  We are digging into this to get all the salient data, but
suffice it to say that I think we need to add a test to the AT that Ops
does before shipping a cougar where we direct connect the sc0 and sc1
ports of the two cougar blades and test for link and no packet loss
during ping.

I've done a bunch of testing so far on a cougar, and I cannot
successfully ping between two sc1 ports connected together, whether
with our cable kit cable, two other cables of differing lengths that I
have tested separately, as well as connected through a switch.  Rendell
tells me that he was able to reverse the configuration of the same
cougar, where the sc1 ports had the traditional network configuration,
and the sc0 ports were directly connected, and was able to ping between
the sc0 ports but with roughly 85% packet loss.  Adding a switch to
that equation did not change the packet loss.  Networking functionality
on the sc1 ports at that time was normal and lossless.

This is g{6,7}r5, which is from the latest build batch:

Rev. 4.0
S/N: 804050006

We've seen several similar issues in the field as well.

Please let me know what you think.

Thanks,

a
