Explore Cisco
How to Buy

Have an account?

  •   Personalized content
  •   Your products and support

Need an account?

Create an account

Cisco ME 3800x and ME 3600x Switches Software Configuration Guide, Cisco IOS Release 15.4(2)S

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

Book Contents
Find Matches in This Book
Available Languages
Download Options

Book Title

Cisco ME 3800x and ME 3600x Switches Software Configuration Guide, Cisco IOS Release 15.4(2)S

Chapter Title

Using the SD Flash Memory Module

Results

Updated:
April 7, 2021

Chapter: Using the SD Flash Memory Module

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

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.

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.

caut.gif
Caution blank.gif 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:

Insertion:

*Jan 15 06:54:54.843: SDFLASH has been inserted!

Removal:

*Jan 15 06:54:43.775: SDFLAH has been removed!
note.gif

Noteblank.gif 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

To transfer running configuration file from one system to another use the following steps:

Step 1blank.gif Insert sd flash card in first system

Switch# Run
 

Step 2blank.gif Use copy running-config command to copy running-config to the sd flash card:

Switch# copy running-config sdflash:config.txt
 

Step 3blank.gif 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 4blank.gif 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

 

Transferring Start-up Configuration

To transfer start-up configuration file from one system to another use the following steps:

Step 1blank.gif Insert the sd flash card in first system

Switch# Run
 

Step 2blank.gif Use copy tftp command to copy startup configuration file.

Switch# copy tftp:://...sdflash: copy data from TFTP to sdflash
 

Step 3blank.gif 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.gif

Noteblank.gif Ensure the SD card is inserted and has the startup-config file on it.

Step 4blank.gif Use logging file sdflash command to enable copying of syslogs to sdflash:

Switch(config)# logging file sdflash:syslogname.log nomax 7
 

Step 5blank.gif 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 6blank.gif 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 7blank.gif 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 8blank.gif 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 9blank.gif 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 1blank.gif 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 2blank.gif Use the exception core-file command to set core dump filename:

Switch(config)# exception core-file core name compressed timestamp
 

Step 3blank.gif 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
 

Was this Document Helpful?

FeedbackFeedback

Contact Cisco