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6800-IA upgrade loop with 6880-X 15.2(1)SY0a

 After upgrading 6880-X to Version 15.2(1)SY0a our 6800IA clients running into download loop by requesting an image update process that seems to be not necessary because the version stored at 6880-X and the 6800-IA modules are identical 15.2(3)E .

 Apr 15 14:18:04: %SATMGR-SW2-5-IMAGE_VERSION_MISMATCH: Image version mismatch detected for FEX 103: image download initiated.  FEX will reboot on completion.
Apr 15 14:18:04: %FEXMGR-SW2-6-IMAGE_DNLD_STATUS: (FEX 103) Auto Image Download : Image download will initiate shortly
Apr 15 14:18:07: %FEXMGR-SW2-6-IMAGE_DNLD_STATUS: (FEX 103) Auto Image Download : Downloading Tar Image
Apr 15 14:18:47: %FEXMGR-SW2-6-IMAGE_DNLD_STATUS: (FEX 103) Auto Image Download : Could not buffer tarfile...using multiple downloads
Apr 15 14:19:04: %FEXMGR-SW2-6-IMAGE_DNLD_STATUS: (FEX 103) Auto Image Download : In progress

FEX-103#sh ver
Cisco IOS Software, C6800IA Software (C6800IA-UNIVERSALK9-M), Version 15.2(3)E, RELEASE SOFTWARE (fc2)
Directory of flash:/c6800ia-universalk9-mz.152-3.E/

    5  -rwx         687  Feb 25 2015 13:30:23 +00:00  info
    6  drwx         512  Feb 25 2015 13:30:28 +00:00  html
    8  -rwx    17751040  Feb 25 2015 13:30:28 +00:00  c6800ia-universalk9-mz.152-3.E.bin

Directory of bootdisk:/c6800ia-universalk9-mz.152-3.E/

    7  -rw-         687  Feb 18 2015 14:07:42 +01:00  info
    8  -rw-      172476  Feb 18 2015 14:07:44 +01:00  dc_default_profiles.txt
    9  drw-           0  Feb 18 2015 14:07:44 +01:00  html
   11  -rw-    17751040  Feb 18 2015 14:08:20 +01:00  c6800ia-universalk9-mz.152-3.E.bin

1928724480 bytes total (1681334272 bytes free)

What is to do to get the FEX-stack working again? Must I downgrade to 15.2(1)SY?


Aninda Chatterjee
Cisco Employee



I believe that there is a slight difference in the image. The 15.2(1)SY was deferred when we published 15.2(1)SY0a; SY0a comes with a different bundled image (the 'a' version of 15.2(3)E for the IA clients). Because of this, the IA clients need to download the new image.


Now, let's come to why the IA clients are unable to download it.


Can you get the following outputs please:


1. show run | in tftp

2. show ip int br | in 192.1.1




Hi Aninda,


H-C240-F26-S02#sh run | i tftp

ip host tftp

ip tftp source-interface Vlan91

tftp-server bootdisk:6800IA-EX6.bin


Directory of bootdisk:/

5  -rw-    17751040  Feb 18 2015 14:08:54 +01:00  6800IA-EX6.bin

Directory of bootdisk:/c6800ia-universalk9-mz.152-3.E/

  11  -rw-    17751040  Feb 18 2015 14:08:20 +01:00  c6800ia-universalk9-mz.152-3.E.bin



H-C240-F26-S02#sh ip int br | i 192.1

mgmt0             YES NVRAM  up                    up

Vlan91         YES NVRAM  up                    up

Vlan1013          YES unset  up                    up


Thank you for the outputs. You have a source interface defined for your TFTP (which is outside the scope of the IA clients); this is why the download is most likely failing. I'd like you to first verify that the FEX internal VLAN interface is up/up on the FEX (login to the FEX, make sure that the state for interface VLAN 1013 is up/up) and after that either remove the configuration line 'ip tftp source-interface vlan91' or remove that line and add 'ip tftp source-interface vlan1013'.


After this, please attempt another install of the FEX and let me know how that goes.


Edit: The IA client is actually out of the scope of the parent (and not the other way around) with a TFTP source-interface pointing to anything other than the FEX internal VLAN interface.




FEX-103#sh ip int brief
Any interface listed with OK? value "NO" does not have a valid configuration

Interface              IP-Address      OK? Method Status                Protocol
Vlan1                  unassigned      NO  unset  up                    up
Vlan1013        YES TFTP   up                    up

H-C240-F26-S02#sh run | i tftp
ip host tftp
tftp-server bootdisk:6800IA-EX6.bin

H-C240-F26-S02#sh fex 103
FEX: 103        Description: F46:C235+C238+C239  state: online
  FEX version: 15.2(3a)E
  Extender Model: C6800IA-48TD, Extender Serial: FCW1838B3TJ
  FCP ready: yes
  Image Version Check: enforced
  Fabric Portchannel Ports: 2
  Fabric port for control traffic: Te1/5/14
  Fabric interface state:
    Po103      - Interface Up.
    Te1/5/14   - Interface Up.      state: bound
    Te2/5/14   - Interface Up.      state: bound

Congratulation and thousand thanks, the FEX is up again!!!

I'm glad we could resolve this. Take care.