7/30/2019 Casar
1/3
Passwor
Torecov
Step1Comman
Step2Step3Step4rommo
Update
Step5rommo
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Step6Step7TheASA
Step8Step9
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7/30/2019 Casar
2/3
rommo
Launchin
Bootcon
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TheASA
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7/30/2019 Casar
3/3
FlashRecovery
Herearetherequiredstepstorecoverfromamissingorcorruptbootimage:
ConnectaconsolecablefromtheASAtoyourcomputerandopenupaserialconnectionusingPutty
Disableanysoftwarefirewallonyourcomputer InstallTFTPserversoftwareonyourcomputer PlacetheCiscosoftwareimageintheTFTPRootfolder(asa821k8.bin)andstartthe
TFTPservice
AssignastaticIPaddresstoyourcomputerIused192.168.20.1(anaddressoutsideofmyexistingsubnet)
ConnectanEthernetcablebetweenyourcomputerandport0/0ontheASA PowerofftheASAthenpoweritbackon Press
the
escape
key
to
boot
into
ROMMON
mode
EnterthefollowingcommandsintheASA(thefirstpartofthesecommandsmustbeincaps)
rommon#1>ADDRESS=192.168.20.10
rommon#2>SERVER=192.168.20.1
rommon#3>GATEWAY=192.168.20.1
rommon#4>IMAGE=asa821k8.bin
rommon#5>PORT=Ethernet0/0
Thesecommands
assign
an
IP
address
of
192.168.20.10
to
port
0/0
on
the
ASA
and
tell
it
tolookatyourTFTPserver192.168.20.1andtoselecttheASAsoftwareimage.
Next,executethecommandtotransfertheimagefromtheTFTPservertotheASArommon#6>tftp
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