3Com 7750 Series # Set the lower limit of the switch free memory to 2 MB and the safety value to 4 MB.

3Com Switch 7750 Series
Command Reference Guide – Routing Protocol Chapter 7 Route Capacity Configuration Commands
7-6
Example
# Set the lower limit of the switch free memory to 2 MB and the safety value to 4 MB.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] memory safety 4 limit 2