CH A P T E R
30
Using the SD Flash Memory Module
This chapter describes the Secure Digital (SD) flash memory module (or SD card) that is used with the
Cisco ME3800, ME3600 and ME3600X-24CX Switches, and includes instructions for installing and
removing the SD card.
This chapter contains the following sections:
•
SD Flash Memory Module, page 30-1
•
SD Card Status, page 30-2
•
Commands, page 30-5
SD Flash Memory Module
The router features an SD card slot, which supports a single Cisco SD flash memory module (SD card)
and SD High Capacity (SDHC). The SD card stores router data and software, including:
•
Switch operating software
•
Running configurations
•
Network management software configuration
•
Network registration data
•
Switch firmware
•
Crashinfo file and core dump on sdflash
•
Syslog messages
•
Archive download of latest IOS from the tar image present on sdflash
SD Card File System
The SD card uses a DOSFS file system. The switch configuration is stored in a binary file in an invisible
partition on the card.
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SD Card Status
Supported SD Cards
Table 30-1 lists the SD cards that can be used with the router.
Table 30-1
Supported SD Flash Modules
Size
1-GB flash memory module
2-GB flash memory module
4-GB SDHC flash memory module
Accessing the SD Card
The SD card and SD card LED are accessed from the switch front panel, though the switch SD card slot,
shown in Figure 30-1.
Caution
Do not remove the SD card from the router; removing the SD card will cause the router to stop operating.
SD Card Status
You can check the SD card status by viewing the SD Card LED.
SD Card LED
The SD card LED is located directly next to the SD card slot. This section describes the LED states and
descriptions.
Figure 30-1
SD Flash Memory Module LED States
Description
Color and State
Description
SD card status
Green solid
SD flash card is installed and operating normally.
Green blinking
A data transfer between the switch and the SD card is
in progress.
Amber solid
An error occurred when the router accessed the SD
flash card.
Off
No SD card is installed in slot.
Insertion and Removal of Card
The sd card is not hot swappable. When the SD card is inserted and removed the syslog messages shown
below are logged:
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Configuration Restrictions
Insertion:
*Jan 15 06:54:54.843: SDFLASH has been inserted!
Removal:
*Jan 15 06:54:43.775: SDFLAH has been removed!
Note
The sdflash should not be removed while sdflash write is in progress.
Configuration Restrictions
The following restriction affect the SD Flash:
•
The FPGA should be ready before the SD flash is initialized.
•
Sdflash does not support nvram partition.
Configuring SD Flash Card
To configure SD flash card feature use the following steps.
•
Transferring Running Configuration
•
Transferring Start-up Configuration
Transferring Running Configuration
To transfer running configuration file from one system to another use the following steps:
Step 1
Insert sd flash card in first system
Switch# Run
Step 2
Use copy running-config command to copy running-config to the sd flash card:
Switch# copy running-config
Step 3
sdflash:config.txt
When copy operation is completed, remove the sd flash card from the first system and insert sd flash
card in second system. Ensure SD Flash LED is ON.
Switch# Run
Step 4
Use config replace command to overwrite existing configuration.
Switch(config)# config replace sdflash:config.txt
To apply all necessary additions and deletions, and to replace the current running
configuration with the contents of the specified configuration file, which is assumed
to be a complete configuration, not a partial configuration. Enter Y if you are sure
you want to proceed. ?[no]: Y
Total number of passes: 1
Rollback Done
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Configuring SD Flash Card
Transferring Start-up Configuration
To transfer start-up configuration file from one system to another use the following steps:
Step 1
Insert the sd flash card in first system
Switch# Run
Step 2
Use copy tftp command to copy startup configuration file.
Switch# copy tftp:://...sdflash: copy data from TFTP to sdflash
Step 3
When copy operation is completed, remove the sd flash card from the first system and insert sd flash
card in second system. Ensure SD Flash LED is ON.
Note
Step 4
Ensure the SD card is inserted and has the startup-config file on it.
Use logging file sdflash command to enable copying of syslogs to sdflash:
Switch(config)# logging file sdflash:syslogname.log nomax 7
Step 5
Use boot config-file sdflash command to configure system to use configuration on SD Flash while
booting.
Switch(config)# boot config-file sdflash:sample_config.text
Step 6
Use the boot system sdflash:image_name command to use image from sd flash card while booting.
Switch(config)# boot system sdflash:sample_image
Step 7
Use the boot config-file sdflash:startup-config command to set boot with the configuration file on sd
flash card.
Switch(config)# boot config-file sdflash:startup-config
Step 8
Use the logging file sdflash:syslog.log nomax 7 command to set the syslog messages to be saved onto
to sd flash card
Switch(config)# logging file sdflash:syslog.log nomax 7
Step 9
Use the archive download-sw /overwrite sdflash:<image name>.tar command to archive download
from sd flash card
Switch# archive download-sw /overwrite sdflash:<image name>.tar
Configure Core and Crash information
To configure the system to dump core and crash files into sd flash card use the following steps:
Step 1
Use exception flash all sdflash: command to dump core and crash info files to the sdflash card:
Switch(config)# exception flash all sdflash: crashinfo file name
Step 2
Use the exception core-file command to set core dump filename:
Switch(config)# exception core-file core name compressed timestamp
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Commands
Step 3
Use the exception crashinfo command to set crash info filename:
Switch(config)# exception crashinfo file sdflash:crashinfo_name
Commands
The following commands are available for SD flash Card feature:
Command
Description
dir sdflash:
Displays the directory.
copy tftp sdflash
Copies files from tftp to sdflash
show sdflash:
Displays the contents of the sd flash card
delete sdflash:startup-config
Deletes files from sd flash card
boot system
sdflash:whales-universal_dbg-mz
Sets boot ios from sd flash card
boot config-file sdflash:startup-config
Sets switch to boot with the configuration file on sd
flash card
logging file sdflash:syslog.log nomax 7
Sets the syslog messages to be saved onto to sd flash
card
archive download-sw /overwrite sdflash:
image name.tar
Archives download from sd flash card
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Commands
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