[c-nsp] Packet reordering and flow-control on 6509

[Christopher J. Pilkington]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

We're seeing a significant amount of reordering on a 6509
with a Sup1A running 7.6(5) box with traffic between hosts
on different WS-6148-GE-TXes.  This is all layer 2, no MSFC is
involved.

The customer claims their application is sensitive to 
reordering, and they claim to see over 40% of packets reordered,
yet still seeing >600Mb/s throughput.

We have noticed that the 6509 is sending TxPauses quite a bit,
which concerns us.  This suggests to me that we are overrunning
buffers, true?  But would this cause reordering?  Perhaps from
retransmits?

Anyone have any input/advice/suggestions of what to look at?

- -- 
Christopher J. Pilkington <cjp at 0x1.net>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (OpenBSD)

iEYEARECAAYFAkRiGrgACgkQEbYCi28Z3+4P+wCdHBTU76g3888JJ/6VZVtizn48
DEgAmQF8KnFU4X3T1hOs666/+k5ZPggQ
=pgt8
-----END PGP SIGNATURE-----