3Com 3500 - page 570

570 CHAPTER 19: OPEN SHORTEST PATH FIRST (OSPF)
ip ospf partition
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modify
For CoreBuilder 9000: Applies to Layer 3 switching modules only.
Modifies the maximum memory that OSPF can allocate.
Valid Minimum Abbreviation
ip o pa m
Important Considerations
■There are three choices for memory allocation:
■Have the system intelligently determine the maximum OSPF
memory partition size (partition size = 1). This is the de fault.
■Have OSPF be part of system memory, growing as needed and
without limit (partition size = 0).
■Configure the maximum OSPF memory partition size manually
(partition size = 4096 - <maximum available memory>).
■You typically do not have to modify the OSPF memory allocation .
However, if the softRestarts statistic shown by the ip ospf
statistics option begins to climb , it means that OSPF is thrashing
for memory and you must increase the maximum memo ry.
For a complete description of OSPF memory allocation, see the “OSPF
Memory Partition” section in the OSPF chapter of the Implementation
Guide.
■The partition size option that you enter takes effect after a system
reboot.
Options
Prompt Description Possible Values [Default]
New
partition
maximum
size
Maximum memory size (in
bytes) to allocate to OSPF
system operations
■4096 to
<maximum
available size>
■0 (to specify system
memory partition)
■1 (to specify a size
based on amount
of memory and the
maximum routing
table size. On
extended memory
systems, this is
4,200,000.)
1 (factory
default), or
current OSPF
partition size