Solarflare Solarflare XtremeScale series, User Manual, Page: 54 / 400

Solarflare Server Adapter User Guide
Installation
Issue 20 © Solarflare Communications 2017 47
The tables below summarizes the speeds supported by Solarflare network adapters.
100Base ‐ T in a Solarflare adapter back ‐ to ‐ back (no intervening switch) configuration
will not work and is not supported.
Table 11: SFN5000,SFN6000, SFN7000 and SFN8000 series SFP+/QSFP+ Adapters
Supported Modes Auto neg
speed
Speed Comment
QSFP+ direct
attach cables
No 10G or 40G SFN8542, SFN8042, SFN7142Q,
SFN7042Q
QSFP+ optical
cables
No 10G or 40G SFN8542, SFN8042, SFN7142Q,
SFN7042Q
SFP+ direct attach
cable
No 10G
SFP+ optical
module (10G)
No 10G
SFP optical module
(1G)
No 1G
SFP+ optical
module (10G/1G)
No 10G or 1G Dual speed modules run at the
maximum speed (10G) unless
explicitly configured to the
lower speed (1G)
SFP 1000BASE ‐ T
module
No 1G These modules support only 1G
and will not link up at 100Mbps
Table 12: SFN5161T and SFN5121T 10GBASE ‐ T Adapters
Supported Modes Auto neg
speed
Speed Comment
100Base ‐ T Yes 100Mbps Typically the interface is set to
auto negotiation speed and
automatically selects the
highest speed supported in
common with its link partner. If
the link partner is set to
100Mbps, with no autoneg, the
adapter will use “parallel
detection” to detect and select
100Mbps speed. If needed any
of the three speeds can be
explicitly configured
1000Base ‐ TX Yes 1Gbps
10GBase ‐ T Yes 10Gbps