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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 3 Assigning the Switch IP Address and Default Gateway
Checking and Saving the Running Configuration
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.
Note After you configure the NVRAM buffer size, you must reload the switch or switch stack.
When you add a switch to an existing stack and the NVRAM sizes differ, the new switch syncs with the
stack and reloads automatically.
Beginning in privileged EXEC mode, follow these steps to configure the NVRAM buffer size:
This example shows how to configure the NVRAM buffer size:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# boot buffersize 524288
Switch(config)# end
Switch#
Switch# show bo
ot
BOOT path-list :
Config file : flash:/config.text
Private Config file : flash:/private-config.text
Enable Break : no
Manual Boot : no
HELPER path-list :
Auto upgrade : yes
Auto upgrade path :
NVRAM/Config file
buffer size: 524288
Timeout for Config
Download: 300 seconds
Config Download
via DHCP: enabled (next boot: enabled)
Switch#
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
boot buffersize size Configure the NVRAM buffersize in kB; the valid range
for size is from 4096 to 1048576.
Step 3
end Return to privileged EXEC mode.
Step 4
show boot Verify the configuration.
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