Specifications

56
High Performance Trading/Algo Speed with Wombat Design and Implementation Guide
OL-15617-01
Appendix B—Building and Configuring Switches
• Fabric module
• Return material authorization (RMA) the offending device
This means that there are bad links and the port is turned off.
Q. In the case of a 120: is it the port on the switch, the port on the HCA, or the cable?
Q. How do I tell what’s bad?
A. Swap the switch port. Swap the HCA port.
A. Review the problem symptoms (from Step 15).
A. Re-enable the port that you shut down in step 15.
A. Verify that the problem recurs.
A. Start swapping components and track the component that the error follows.
If it was an internal link inside a 270g, follow these troubleshooting steps:
Troubleshooting Task Details
1. Re-seat the cable on
both ends.
If the error disappears,, you have fixed a faulty physical cable connection, and the problem is
solved.
2. Move cable to a
different switch
port
If the error disappears, you have identified a faulty switch port.
3. Move cable to a
different HCA port.
This step assumes that you have two HCA ports on your host or that you have an additional host
with an HCA available. If the problem disappears, you have identified a faulty HCA port.
4. Remove cable If the problem persisted through the previous 2 steps, you have identified a faulty cable. Replace
the cable. (If possible, try a different cable between the same two ports.)
Note Most cables that go through the RMA process come back with no errors. Be sure to take
the time to thoroughly test the cable before you send it back to Cisco. Make sure another
cable works between the same 2 ports before you confirm that the original cable is faulty.