[ixp1200] packet loss on IXF440 ports

[Koert Vlaeminck]

Hi,

Recently, we configured a Radisys ENP-2505 Intel IXP1200 evaluation board
(revision C0) running the linux kernel (2.3.99) provided by the Intel IXA
SDK. When trying to run the example count application from the Intel IXA SDK
2.01, we noticed the following problems:
1/ when using a 10 mbit hub between the IXF440 ports and the traffic
generator (linux host), no data is received in the ENP-2505. Seems like the
10/100 mbit half-/full-duplex autonegotiation does not work properly (10mbit
link LED is lit however).
2/ when using a crossover cable between the traffic generator and one of the
ports of the ENP-2505 (thus 100 mbit full-duplex), the application seems to
work (on that one port of course), but we notice a packet loss (about 20%).
The cable is tested between two regular PCs and is fine. Generating packets
with ping (without parameters) or with ping -f (more intensive) does not
influence the packet loss rate, so sending one or hundred packets each
second does not seem to matter. The same problem is encountered with the
more advanced examples such as the L3-forwarder, which makes me think the
IXA SDK provided Ingress ACEs are not suitable for the ENP boards.

Has anyone encountered (and solved) one of these problems?

Any help would be greatly appreciated.

Kind regards,

Tim & Koert