Users Guide

Port Characteristics 659
The settings in Table 18-4 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 18-4. 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 18-3. Default Port Values
Feature Description