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Catalyst 3750 SwitchSoftware Configuration Guide
OL-8550-09
Chapter5 Managing Switch Stacks
Understanding Stacks
•Automatic advise (auto-advise)—when the auto-upgrade process cannot find appropriate
version-mismatch member software to copy to the switch in version-mismatch mode, the
auto-advise process tells you the command (archive copy-sw or archive download-sw privileged
EXEC command) and the image name (tar filename) needed to manually upgrade the switch stack
or the switch in version-mismatch mode. The recommended image can be the running stack image
or a tar file in any flash file system in the stack (including the switch in version-mismatch mode). If
an appropriate image is not found in the stack flash file systems, the auto-advise process tells you
to install new software on the stack. Auto-advise cannot be disabled, and there is no command to
check its status.
The auto-advise software does not give suggestions when the stack software and the software of the
switch in version-mismatch mode do not contain the same feature sets. For example, if the switch
stack is running the IP base image and you add a switch that is running the IP services image, the
auto-advise software does not provide a recommendation. The same events occur when
cryptographic and noncryptographic images are running.
You can use the archive-download-sw /allow-feature-upgrade privileged EXEC command to
allow installing an image with a different feature set.
Auto-Upgrade and Auto-Advise Example Messages
When you add a switch that has a different minor version number to the stack, the software displays
messages in sequence (assuming that there are no other system messages generated by the switch).
This example shows that the stack detected a new switch that is running a different minor version number
than the stack. Auto-copy launches, finds suitable software to copy from a member to the switch in
version-mismatch mode, upgrades the switch in version-mismatch mode, and then reloads it:
*Mar 11 20:31:19.247:%STACKMGR-6-STACK_LINK_CHANGE:Stack Port 2 Switch 2 has changed to
state UP
*Mar 11 20:31:23.232:%STACKMGR-6-SWITCH_ADDED_VM:Switch 1 has been ADDED to the stack
(VERSION_MISMATCH)
*Mar 11 20:31:23.291:%STACKMGR-6-SWITCH_ADDED_VM:Switch 1 has been ADDED to the stack
(VERSION_MISMATCH) (Stack_1-3)
*Mar 11 20:33:23.248:%IMAGEMGR-6-AUTO_COPY_SW_INITIATED:Auto-copy-software process
initiated for switch number(s) 1
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:Searching for stack member to act
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:as software donor...
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:Found donor (system #2) for
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:member(s) 1
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:System software to be uploaded:
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:System Type: 0x00000000
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:archiving c3750-ipservices-mz.122-25.SEB
(directory)
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:archiving
c3750-ipservices-mz.122-25.SEB/c3750-ipservices-mz.122-25.SEB.bin (4945851 bytes)
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:archiving
c3750-ipservices-mz.122-25.SEB/info (450 bytes)
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:archiving info (104 bytes)
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:examining image...
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:extracting info (104 bytes)
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:extracting
c3750-ipservices-mz.122-25.SEB/info (450 bytes)
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:extracting info (104 bytes)
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:Stacking Version Number:1.4
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW:System Type: 0x00000000
*Mar 11 20:36:15.038:%IMAGEMGR-6-AUTO_COPY_SW: Ios Image File Size: 0x004BA200