Fabric OS Reference Manual

Telnet Commands 207
spinSilk
Functional test of port M->N path at maximum switch speed.
Synopsis
spinSilk [nMillionFrames]
Availability admin
Description Use this command to verify the functional operation of the switch at the
maximum speed of 1 Gbps.
To run
spinSilk
, set up the routing hardware so that frames received by
port M are retransmitted through port N and frames received by port N are
retransmitted through port M. Each port M sends 4 frames to its partner
port N using an external fiber cable; this exercises all switch components
from the main board, to the GBIC, to the fiber cable, to the GBIC, and back
to the main board.
The cables can be connected to any port combination as long as the cables
and GBICs connected are of the same technology: A short wavelength
GBIC port is connected to another short wavelength GBIC port using a
short wavelength cable, a long wavelength port is connected to a long
wavelength port, and a copper port is connected to a copper port.
For best coverage, connect ports from different ASICs. Ports 0-3 belong to
ASIC 0, ports 4-7 belong to ASIC 1, etc. A connection from port 0 to port
15 exercises the transmit path between ASICs. A connection from port 0 to
port 3 tests only the internal transmit path in ASIC 0.
The frames are continuously transmitted and received in all ports in
parallel. The port LEDs flicker green rapidly while the test is running.
The test method consists of five steps
1. Determine port connections.
2. Enable ports for cabled loopback mode.
3. Configure the routing table to route frames received by port M to the
partner port N and vice versa.