3Com 3500 - Manual (Page 212)

212 C HAPTER 7: E THERNET P ORTS
ethernet
✓
3500
✓
9000
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9400
✓ 3900
✓ 9300
autoNegotiation
Enables or disables autonegotiation of port attributes such as duplex
mode and port speed on ports that support autonegotiation.
Valid Minimum Abbreviation
e a
Important Considerations
■
You can use this command to configure the same setting on multiple
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 ports and your requested
flowControl information for 1000BASE-SX ports. When you
disable
autonegotiation, the system recognizes the requested portMode
values for ports that have portMode options and the requested
flowControl values for 1000BASE-SX ports. (100BASE-FX ports and
backplane ports do not support autonegotiation.)
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