Troubleshooting guide
•  Have you tried using a different riser card and/or a different brand of riser 
card? 
•  Have you tried using a newer BIOS for this motherboard? 
Installation of the Myrinet switch and cables 
Once the Myrinet NIC(s) have been installed and correctly detected in your host(s), you 
can now proceed to install the switch(es) and connect the cables. Separate instructions 
are included below for M3-E* Switches and M3-CLOS-ENCL or M3-SPINE-ENCL 
Switches. 
M3-E* Switches 
The installation of the M3-E* switch and cables involves the following steps: 
1.  Plug in the power cord of the switch and verify that all of the switch line cards 
are properly seated. If a switch line card is properly seated, you will see the 
Status LED, located on the far left of each front panel, illuminated. If your 
switch contains a monitoring line card, do not yet seat the monitoring line card 
or connect ethernet to the monitoring line card. Installation of the monitoring 
line card will be performed after all of the fiber cables have been connected. 
2.  A cable should then be connected between the fiber port on each NIC and a 
port on a switch line card. 
If more than one Myrinet switch is being used in your configuration, refer 
to the provided network diagram for cabling details. 
If you have M3F2-PCIXE NICs, you can connect both ports of each NIC 
to one switch or to different switches in a dual-rail configuration. Refer to 
the FAQ entry http://www.myri.com/cgi-bin/fom?file=326 for details. 
If you have M3-SW16-8E GbE switch line cards, refer to the FAQ entry 
"Are there any special installation instructions for the M3-SW16-8E GbE 
switch line cards?" (
http://www.myri.com/cgi-bin/fom?file=357) for 
installation troubleshooting details. 
3.  You should next install the monitoring line card (located in the top-slot) in the 
switch. The presence of a monitoring line card in the switch is optional. If 
your switch does not contain a monitoring line card, you can skip this step of 
the hardware installation. To install a monitoring line card in your Myrinet-
2000 switch, do the following: 
Step 1. Read the MAC address from the faceplate of the monitoring line 
card, and register this MAC address with a static IP address in the 
reservation table of the DHCP server on the local network. The DHCP 
© 2007 Myricom, Inc. DRAFT 
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