3Com Switch 7700 Configuration Manual page 192

184 C 5: IP R
HAPTER OUTING
P O
ROTOCOL PERATION
Setting the Safety Value for Switch Memory
When the amount of free memory is reduced to the safety value but has not
reached the lower limit, you can use the display memory limit command to see
how much free memory remains.
If automatic memory restoration is enabled, when the free memory of the
Ethernet switch exceeds the safety value, the disconnected BGP and OSPF will be
restored.
Perform the following configurations in system view.
Table 141 Setting the Safety Value of the Ethernet Switch Memory
Operation
Set the safety value of the Ethernet switch
memory
By default, the safety value of the Ethernet switch memory is 4Mbytes.
The safety value of the memory must be larger than the lower limit value.
Setting the Lower Limit and the Safety Value Simultaneously
When you need to modify both the lower limit and the safety value of the
Ethernet switch memory, you can (and are recommended to) simultaneously
modify the two configurations.
You can also restore the lower limit and the safety value of the Ethernet switch
memory to the default value at the same time if it is necessary.
Perform the following configuration in the system view.
Table 142 Setting the Lower Limit and the Safety Value of the Ethernet Switch Memory
Simultaneously
Operation
Set the lower limit and the safety value of the
Ethernet switch memory simultaneously
Restore the lower limit and the safety value of
the Ethernet switch memory to the default
value
The default values of the lower limit and the safety value of the Ethernet switch
memory are 2Mbytes and 4Mbytes, respectively.
Note that safety-value must have a higher value than limit-value.
Preventing Automatic Recovery of Disconnected Routing Protocols
If the automatic memory restoration function of a Ethernet switch is disabled,
connection of routing protocols will not be restored even if the free memory
returns to the safety value.
Command
memory safety value
Command
memory safety safety-value limit limit-value
undo memory [ safety | limit ]