3Com SUPERSTACK 3 3250, Implementation Manual

Page: 15 / 132

Switch Features Explained 15
Flow control uses backjamming on ports operating in half duplex mode,
and is implemented using the IEEE Std 802.3-2002 (incorporating 802.3x)
on ports operating in full duplex mode.
For more information about auto-negotiation and port capabilities, see
Chapter 2 “Optimizing Bandwidth” .
Configuration Save
and Restore
The Configuration Save and Restore feature allows the configuration of
your Switch to be saved as a file on a remote server, or to be restored
onto the Switch from a file on a remote server. The configuration
information is stored in an ASCII text file.
All configuration information that can be set using the Switch’s
Command Line Interface is saved and restored.
Security information such as passwords and management IP information
will not be saved in the configuration file.
You must have read/write management access level to be able to save
and restore the Switch configuration.
Important Considerations
■
3Com recommends the Switch unit is reset to its factory default
settings before you restore a configuration onto it. You can reset the
Switch using the
system control initialize
CLI command or the
System > Control > Initialize Web interface operation.
■
The configuration can only be restored onto a device which has the
same physical connections as when the configuration was initially
saved. The restore operation will be unsuccessful if the physical
configuration of the device is different.
■
The configuration of the Switch must only be restored or saved by a
single user at a time.
■
When using the Configuration Save and Restore feature, 3Com
recommends that aggregated links are configured as either:
■
Manual aggregations with Link Aggregation Configuration
Protocol (LACP) disabled on the ports that are to be manually
placed in the aggregated link.
or