Cisco CSS 11500 Series Content Services Switches

Setting the CSS 11500 to Secondary Boot

Document ID: 45346

Updated: Jan 31, 2006



This document provides information on how to set the CSS 11500 to secondary boot from the second drive if the primary boot device fails.



There are no specific requirements for this document.

Components Used

This document applies to the 11500 series of CSS with two disk drives or Flash cards. This includes the following models:

  • 11501

  • 11503

  • 11505

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.


For more information on document conventions, see the Cisco Technical Tips Conventions.

Secondary Boot Setup


In this section, you are presented with the information to configure the features described in this document.

You will need to format the disk for it to be recognized.

11503# format ? 
  <Integer>           MSD slot for format (Range: 0-1) 
11503# format 1 

Step-by-Step Instructions

The steps listed below are involved in this task.

  1. Set the disk in slot two to work as a back up if the operating system in slot 0 fails.

    11503# map secondary-boot 1 ? 
      <cr>                Execute command 
    11503# show map 
    MSD Mapping 
    Primary-Boot:    Slot 0 (mapped) 
    Secondary-Boot:  Slot 1 (mapped) 
    Log:             Slot 0 (unmapped) 
    Core:            Slot 0 (unmapped) 
  2. Copy a WebNS image into slot 1.

    11503# copy 0 boot-image ? 
    11503# copy 0 boot-image sg0720104 
    Copying(/) /sgo720104/ .... 
  3. Setup the secondary boot information.

    11503# conf t 
    11503(config)# boot 
    11503(config-boot)# secondary boot-file sg0720104 
    11503(config-boot)# secondary boot-type boot-via-disk 

    A second method to setup the secondary boot information is also available. Reboot the box and enter Offline DM. Set the Offline DM's secondary boot to boot from disk, as shown below.

         CSS5-SCM-2GE Offline Diagnostic Monitor menu (OffDM) 
            Version: 7.20 Build 4 
            B O O T   C O N F I G U R A T I O N   M E N U 
            Enter a menu number: 
            1.      Set Primary Boot Configuration 
            2.      Set Secondary Boot Configuration 
            3.      Set IP Address, and Subnet Mask 
            r.      Return to previous menu 

    Choose option 2 (this will list the available operating systems on disk 2 (slot 1)).

    Configuring SECONDARY Boot Record 
    Boot via [N]etwork, [F]TP, [D]isk, or [C]lear: [D] 
    Enter the boot image filename [sg0710102]: 


The best way to verify if this works is to pull the disk out of the CSS that the CSS is set to primary boot from. Reboot the CSS. The CSS should boot from the secondary disk.


There is currently no specific troubleshooting information available for this configuration.

Related Information

Updated: Jan 31, 2006
Document ID: 45346