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Solarflare Server Adapter User Guide
Solarflare Adapters on Windows
Issue 20 © Solarflare Communications 2017 179
The available tests depend on the installed adapter type.
Running Cable Diagnostics
With high ‐ speed data networking, the suitability of the cable in achieving maximum
transfer rates is especially important. SAM’s cable diagnostic tool can be used to
verify the attached cable, reporting its condition, measured length and electrical
characteristics for each cable pairing.
NOTE: Cable diagnostics are only available on Solarflare 10GBASE ‐ T Adapters. For
these adapters, Solarflare recommend using good quality Category 6, 6a or 7 cable
up to the maximum length as determined by the cable category.
Table 41: Adapter Diagnostic Tests
Diagnostic Test Purpose
LED Flashes the LEDs for 5 seconds.
NVRAM Verifies the flash memory board configuration area by parsing
and examining checksums.
Registers Verifies the adapter registers by attempting to modify the
writable bits in a selection of registers.
Interrupts Examines the available hardware interrupts by requesting the
controller to generate an interrupt and verifying that the
interrupt has been processed by the network driver.
MAC loopback Verifies that the network driver is able to pass packets to and
from the network adapter using the MAC loopback layer.
PHY loopback Verifies that the network driver is able to pass packets to and
from the network adapter using the PHY loopback layer.
Memory Verifies SRAM memory by writing various data patterns
(incrementing bytes, all bit on and off, alternating bits on and
off) to each memory location, reading back the data and
comparing it to the written value.
MDIO Verifies the MII registers by reading from PHY ID registers.
Event Verifies the adapter’s event handling capabilities by posting a
software event on each event queue created by the driver and
checking it is delivered correctly.
The driver creates an event queue for each CPU.
PHY BIST Examines the PHY by initializing it and starting any available
built ‐ in self tests to run.
boot ROM Verifies the Boot ROM configuration and image checksum.
Will warn if no Boot ROM is present.