HELP to upgrade IOS of C4506 // Supervisor II+ ( WS-X4013+ )

[soufiane.belahsen]

Hi,

I want upgrading the IOS for a WS-C4506, The problem I am having is that there is not enough space to copy the new IOS to flash without deleting the original IOS first.

Can you please recommend a rollback plan if the Switch fail to boot with the new IOS after I delete the original IOS?

C4506 // Supervisor II+ ( WS-X4013+ )

[Reza Sharifi]

Hi,

Usually, the flash has space for multiple IOS versions unless you are going from a very old version to a new one which is a much larger file.

Can you post the output of "dir"

Also, what IOS are you planning to load?

HTH

[Leo Laohoo]

Post the complete output to the following commands:
1. sh version; and
2. dir

[soufiane.belahsen]

Hi,

I want to update to the recommended version by Cisco cat4500-ipbasek9-mz.150-2.SG11 size 17,2 Mo (18 095 624 octets)

here is the output of the show dir and show version :

FED#dir bootflash:
Directory of bootflash:/

    1  -rwx    12405740  Aug 27 2015 08:53:47 +00:00  cat4000-i9s-mz.122-25.EWA14.bin
    2  -rw-       23312  Aug 27 2015 09:08:21 +00:00  roalbackvers12.txt
    3  -rw-       23687   Dec 5 2015 23:08:11 -01:00  config_06122015.text

27262976 bytes total (14809852 bytes free)

sh vers
Cisco IOS Software, Catalyst 4000 L3 Switch Software (cat4000-I9S-M), Version 12.2(25)EWA14, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Tue 20-May-08 18:49 by chendah
Image text-base: 0x10000000, data-base: 0x114BE208

ROM: 12.2(31r)SG2
Dagobah Revision 226, Swamp Revision 34

FED uptime is 20 weeks, 6 days, 16 hours, 50 minutes
System returned to ROM by reload
System restarted at 21:58:54 GMT Wed Nov 8 2017
System image file is "bootflash:cat4000-i9s-mz.122-25.EWA14.bin"

cisco WS-C4506 (MPC8245) processor (revision 10) with 262144K bytes of memory.
Processor board ID FOX1050180Z
MPC8245 CPU at 266Mhz, Supervisor II+
Last reset from Reload
43 Virtual Ethernet interfaces
44 Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.

Configuration register is 0x2101

[Leo Laohoo]

You will need to delete the OLD IOS and then copy the new IOS across.

---

@soufiane.belahsen wrote:

ROM: 12.2(31r)SG2

---

Did you read the Release Notes?  Pay close attention to current ROMmon version and what is recommended (HERE).

[soufiane.belahsen]

Hi,

Effectively, I have to delete the old IOS to copy the new

but my question is: there is a rollback plan if the Switch fail to boot with the new IOS after I delete the original IOS?

[Leo Laohoo]

1. Delete the old IOS;
2. Copy the new IOS into the line card;
3. Compare the MD5 hash value of the file (new IOS) against the MD5 value found in the Cisco website. The MD5 hash value must match in order to proceed.
4. Save the config.
5. Reboot.

[soufiane.belahsen]

@leo : Thank you for your reply
So, i think you do not fully understand my question
This switch is very critical
I want that you recommend to me a rollback plan if the Switch fail to boot with the new IOS after I delete the original IOS.
Or, a fast solution in case of a problem during the upgrade ( less downtime )

[Leo Laohoo]

There is no rollback "plan".  

There is no space in the flash to store two (or more) IOS files. 

This is why I've provided all the necessary step to ensure the IOS is not corrupt.

I think you'll need to factor in the age of the line cards.  Have you planned what will happen if one (or more) line cards fail during the reboot?

NOTE:  The last time I've used a 4013+ was back in 2007.