Swap bootvar on 5505

[johnlloyd_13]

hi all,

just wanna ask if i could swap around the bootvar on my 5505 without affecting the activation key.

this is to learn different NAT on pre and 8.3+ IOS. TIA!

# sh bootvar

BOOT variable = disk0:/asa825-26-k8.bin

Current BOOT variable = disk0:/asa825-26-k8.bin

CONFIG_FILE variable =

Current CONFIG_FILE variable =

# sh run boot

boot system disk0:/asa825-26-k8.bin

Directory of disk0:/

125    -rwx  14812604    07:52:37 Mar 04 2013  asdm-635.bin

103    -rwx  1868412     09:45:54 Nov 13 2007  securedesktop-asa-3.1.1.29-k9.pkg

104    -rwx  398305      09:46:08 Nov 13 2007  sslclient-win-1.1.0.154.pkg

12     drwx  4096        09:47:52 Nov 13 2007  crypto_archive

135    -rwx  4675549     02:59:56 Mar 06 2013  anyconnect-win-2.5.2010-k9.pkg

3      drwx  4096        17:53:54 May 19 2008  log

151    -rwx  2010        14:15:31 Mar 14 2013  wbgsslvpn.xml

110    -rwx  11491880    15:25:30 Nov 01 2010  asdm-623.bin

111    -rwx  16459776    15:41:06 Nov 01 2010  asa822-k8.bin

112    -rwx  3203909     15:56:46 Nov 01 2010  anyconnect-win-2.4.1012-k9.pkg

13     drwx  4096        13:56:30 Nov 03 2010  coredumpinfo

113    -rwx  15409152    00:52:34 Jul 09 2012  asa825-26-k8.bin

114    -rwx  15390720    00:56:14 Jul 09 2012 asa845-k8.bin

119    -rwx  30720326    01:59:49 Feb 26 2013  anyconnect-win-3.1.02040-k9.pkg

[James Leinweber · Accepted solution]

Yes, the usual ploy would be to set up the new image as first in the boot order, with the older image as a fallback.  However, the fact that the NAT configuration completely changed at 8.3 matters; also, 8.4 would need more memory than 8.2.  E.g.

configure terminal

boot system disk0:/asa845-k8.bin

no boot system disk0:/asa825-26-k8.bin

boot system disk0:/asa825-26-k8.bin

end

should give you a configuration where "show run boot" yields:

boot system disk0:/asa845-k8.bin

boot system disk0:/asa825-26-k8.bin

-- Jim Leinweber, WI State Lab of Hygiene

[sokakkar]

As James mentioned, 8.3 or later will need more memory and also there is significant difference in the way ASA handles NAT and acl. In case you've not checked the related info already, this link can help:

https://supportforums.cisco.com/docs/DOC-12690

-

Sourav

[johnlloyd_13]

Hi,

Thanks for your inputs! I've got 512 MB RAM so I believe this won't be any issue.


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