3Com 3500 - page 212

212 CHAPTER 7: ETHERNET PORTS
ethernet
✓ 3500
✓ 9000
✓ 9400
✓ 3900
✓ 9300
autoNegotiation
Enables or disables autonegotiation of port attrib utes such as duplex
mode and port speed on ports that support autone gotiation.
Valid Minimum Abbreviation
e a
Important Considerations
■You can use this command to configure the same setting on m ultiple
ports simultaneously. When you specify multiple port numbers, the
system prompts you to choose the setting and then applies it to all of
the ports.
■When you enable autonegotiation, the system ignores your requested
portMode information for 10/100BASE-TX po rts and your requested
flowControl information for 1000BASE-SX po rts. When you disable
autonegotiation, the system recognizes the requested portMode
values for ports that have portMode option s and the requested
flowControl values for 1000BASE-SX ports. (100 BASE-FX ports and
backplane ports do not support autonegot iation.)
Therefore, it is extremely important that you understand how to
implement flowcontrol and portMode in your network. See the
Implementation Guide for your system for more information.
Options
Prompt Description Possible Values [Default]
Port Port numbers for which you
want to enable or disable
autonegotiation
■A single port
■A range of
ports
■all
■? (to display a
port summary)
–
Autonegotiation
setting
Whether to enable or
disable autonegotiation on
each of the ports that you
selected
■enable
■disable
enable