Users Guide

Port Characteristics 641
The settings in Table 17-4 show recommended port settings by port type.
Auto-negotiation is recommended for DAC cables when the link partner is
also capable of performing auto-negotiation. If the link partner cannot
perform auto-negotiation, then a fixed speed must be utilized. In all cases,
the link partners need identical settings, e.g. both sides must be set to use
auto-negotiation or a fixed speed. In the case of a fixed speed link, both sides
must be set to the same speed.
Duplex mode Full-duplex
Flow control Enabled (RX only)
Maximum frame size 1518
Energy Detect mode Enabled
EEE mode Enabled
Link Dependency None configured
Switchport mode Access
Table 17-4. Recommended Port Settings
Port Settings
1000M Copper Auto-Neg (100,1000), Full-duplex
2.5G Copper Auto-Neg (100,1000,2500), Full-duplex
5G Copper Auto-Neg (100,1000,5000), Full-duplex
SFP Auto-Neg (100,1000), Full-duplex
SFP DAC Auto-Neg (100,1000), Full-duplex
SFP+ 10000, Full-duplex
SFP+ DAC Auto-Neg (1000,10000), Full-duplex
QSFP 40G (or 4x10G), Full-duplex
QSFP DAC Auto-Neg (40G or 4x10G), Full-duplex
Table 17-3. Default Port Values
Feature Description