570
C
HAPTER
19: O
PEN
S
HORTEST
P
ATH
F
IRST
(OSPF)
ip ospf partition
✓
3500
✓
9000
9400
3900
9300
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 default.
■
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 memory.
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
