Modifying The I/O Memory (Iomemset) - Cisco 2800 Series Manual

usbflash1: usbflash1
eprom: eprom

Modifying the I/O Memory (iomemset)

This section describes how to modify the I/O memory by using the memory-size iomemset command.
Use the iomemset command only if it is needed for temporarily setting the I/O memory from ROM
Note
monitor mode. Using this command improperly can adversely affect the functioning of the router.
The Cisco IOS software can override the I/O memory percentage if the memory-size iomem command
is set in the NVRAM configuration. If the Cisco IOS command is present in the NVRAM configuration,
the I/O memory percentage set in the ROM monitor with the iomemset command is used only the first
time the router is booted up. Subsequent reloads use the I/O memory percentage set by using the
memory-size iomem command that is saved in the NVRAM configuration.
If you need to set the router I/O memory permanently by using a manual method, use the memory-size
iomem Cisco IOS command. If you set the I/O memory from the Cisco IOS software, you must restart
the router for I/O memory to be set properly.
SUMMARY STEPS
1.
DETAILED STEPS
Command or Action
Step 1
iomemset i/o-memory percentage
Example:
rommon> iomemset 15
Examples
In the following example, the percentage of DRAM used for I/O memory is set to 15:
rommon 2 > iomemset
usage: iomemset [smartinit | 5 | 10 | 15 | 20 | 25 | 30 | 40 | 50 ]
rommon 3 >
rommon 3 > iomemset 15
Invoking this command will change the io memory percent
*****WARNING:IOS may not keep this value*****
Do you wish to continue? y/n: [n]: y
rommon 4 > meminfo
-------------------------------------------------
Current Memory configuration is:
Onboard SDRAM: Size = 128 MB : Start Addr = 0x10000000
-----Bank 0 128 MB
-----Bank 1
OL-5997-02
iomemset i/o-memory percentage
0 MB
How to Use the ROM Monitor—Typical Tasks
Purpose
Reallocates the percentage of DRAM used for I/O
•
memory and processor memory.
Using the ROM Monitor
19