3Com CoreBuilder 3500, Implementation Manual, Page: 399 / 592

OSPF Memory Partition 399
Manual Memory
Allocation
You can manually control the OSPF current partition maximum size. You
can enter any value between 4096 and the maximum memory available
on your system, as shown in the
ip ospf partition modify
command
prompt.
You can also use manual memory allocation control to lower the OSPF
current maximum partition size to be less than the 4,200,000 default
minimum on extended memory systems. As noted previously, memory
reserved under the OSPF current maximum partition size is not available
to other protocols even if it is not allocated. If you must carefully
apportion memory among competing protocols, then you might want to
decrease the memory available to OSPF. A router located in a stub area
has no external link state advertisements (LSAs), for example, and might
require less memory.
System Memory
Allocation
You can also have OSPF use the system memory partition. There will be
no specific OSPF memory partition and no current maximum partition
size. OSPF will grow as it finds necessary, possibly encroaching upon the
space available to other protocols.