Configuring The Nvram Buffer Size - Cisco Catalyst 2975 Software Configuration Manual

Chapter 3 Assigning the Switch IP Address and Default Gateway
To store the configuration or changes you have made to your startup configuration in flash memory,
enter this privileged EXEC command:
Switch# copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
This command saves the configuration settings that you made. If you fail to do this, your configuration
will be lost the next time you reload the system. To display information stored in the NVRAM section
of flash memory, use the show startup-config or more startup-config privileged EXEC command.
For more information about alternative locations from which to copy the configuration file, see
Appendix B, "Working with the Cisco IOS File System, Configuration Files, and Software Images."

Configuring the NVRAM Buffer Size

The default NVRAM buffer size is 512 KB. In some cases, the configuration file might be too large to
save to NVRAM. Typically, this occurs when you have many switches in a switch stack. You can
configure the size of the NVRAM buffer to support larger configuration files. The new NVRAM buffer
size is synced to all current and new member switches.
After you configure the NVRAM buffer size, reload the switch or switch stack.
Note
When you add a switch to a stack and the NVRAM size differs, the new switch syncs with the stack and
reloads automatically.
Beginning in privileged EXEC mode, follow these steps to configure the NVRAM buffer size:
Command
Step 1 configure terminal
Step 2 boot buffersize size
Step 3 end
Step 4
show boot
This example shows how to configure the NVRAM buffer size:
Switch# configure terminal
Enter configuration commands, one per line.
Switch(config)# boot buffersize 524288
Switch(config)# end
Switch# show boot
BOOT path-list
Config file
Private Config file : flash:/private-config.text
Enable Break
Manual Boot
HELPER path-list
Auto upgrade
Auto upgrade path
NVRAM/Config file
OL-19720-02
:
: flash:/config.text
: no
: no
:
: yes
:
buffer size: 524288
Checking and Saving the Running Configuration
Purpose
Enter global configuration mode.
Configure the NVRAM buffersize in KB. The valid range
for size is from 4096 to 1048576.
Return to privileged EXEC mode.
Verify the configuration.
End with CNTL/Z.
Catalyst 2975 Switch Software Configuration Guide
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