5-14
Catalyst 3750 Switch Software Configuration Guide
OL-8550-02
Chapter 5 Managing Switch Stacks
Understanding Switch Stacks
*Mar 1 00:03:15.554:%IMAGEMGR-6-AUTO_COPY_SW_INITIATED:Auto-copy-software process
initiated for switch number(s) 1
*Mar 1 00:03:15.554:%IMAGEMGR-6-AUTO_COPY_SW:
*Mar 1 00:03:15.554:%IMAGEMGR-6-AUTO_COPY_SW:Searching for stack member to act
*Mar 1 00:03:15.554:%IMAGEMGR-6-AUTO_COPY_SW:as software donor...
*Mar 1 00:03:15.554:%IMAGEMGR-6-AUTO_COPY_SW:Software was not copied
*Mar 1 00:03:15.562:%IMAGEMGR-6-AUTO_ADVISE_SW_INITIATED:Auto-advise-software process
initiated for switch number(s) 1
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:Systems with incompatible software
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:have been added to the stack. The
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:storage devices on all of the stack
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:members have been scanned, and it has
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:been determined that the stack can be
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:repaired by issuing the following
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:command(s):
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW: archive download-sw /force-reload
/overwrite /dest 1 flash1:c3750-ipservices-mz.122-25.SEB.tar
*Mar 1 00:04:22.537:%IMAGEMGR-6-AUTO_ADVISE_SW:
For information about using the archive download-sw privileged EXEC command, see the “Working
with Software Images” section on page C-19.
Note Auto-advise and auto-copy identify which images are running by examining the info file and by
searching the directory structure on the switch stack. If you download your image by using the copy tftp:
command instead of by using the archive download-sw privileged EXEC command, the correct
directory structure is not properly created. For more information about the info file, see the “tar File
Format of Images on a Server or Cisco.com” section on page C-20.
Incompatible Software and Stack Member Image Upgrades
You can upgrade a switch that has an incompatible software image by using the archive copy-sw
privileged EXEC command. It copies the software image from an existing stack member to the one with
incompatible software. That switch automatically reloads and joins the stack as a fully functioning
member. For more information, see the “Copying an Image File from One Stack Member to Another”
section on page C-33.
Switch Stack Configuration Files
The configuration files record these settings:
• System-level (global) configuration settings—such as IP, STP, VLAN, and SNMP settings—that
apply to all stack members
• Stack member interface-specific configuration settings, which are specific for each stack member
The stack master has the saved and running configuration files for the switch stack. All stack members
periodically receive synchronized copies of the configuration files from the stack master. If the stack
master becomes unavailable, any stack member assuming the role of stack master has the latest
configuration files.
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