Restaurar ASA 5505 desde rommon

cisco asa 5505

En caso de que por error o desgracias divina nos hayamos cargado la IOS del ASA, podemos recuperarlo desde rommon; este es un método mas que puede ser utilizado efectivo y seguro. -En este caso utilizamos la red 192.168.100.0/24 siendo el Asa la ip 100.5 nuestro PC la 192.168.100.10 y como puerta de enlace la 192.168.100.1

Launch BIOS Extension to setup ROMMON
Cisco Systems ROMMON Version (1.0(11)2) #0: Thu Jan 26 10:43:08 PST 2006
Platform ASA5510-K8
Use BREAK or ESC to interrupt boot.
Use SPACE to begin boot immediately.
Boot interrupted.
Management0/0
Ethernet auto negotiation timed out.
Interface-4 Link Not Established (check cable).
Default Interface number-4 Not Up
Use ? for help.
rommon #0>

Link is UP
rommon #1> address 192.168.100.5
rommon #2> gateway 192.168.100.1
rommon #3> server 192.168.100.10
rommon #4> file asa842-k8.bin
rommon #6> ping 192.168.100.10
Sending 20, 100-byte ICMP Echoes to 192.168.100.10, timeout is 4 seconds:
?!!!!!!!!!!!!!!!!!!!
Success rate is 95 percent (19/20)

rommon #7>
rommon #7> tftpdnld
ROMMON Variable Settings:
ADDRESS=192.168.100.5
SERVER=192.168.100.10
GATEWAY=192.168.100.1
PORT=Ethernet0/0
VLAN=untagged
IMAGE=asa842-k8.bin
CONFIG=
LINKTIMEOUT=20
PKTTIMEOUT=4
RETRY=20
tftp asa842-k8.bin@192.168.100.10 via 192.168.100.1
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[output truncated for clarity]
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Received 15243264 bytes
Launching TFTP Image…
Cisco Security Appliance admin loader (3.0) #0: Fri Aug 6 07:52:16 MDT 2010
Cisco Adaptive Security Appliance Software Version 8.4(2)
[output truncated for clarity]
Cryptochecksum (unchanged): 1f9718cc 8bfafb64 55268ff4 b8fe0c26
Type help or ‘?’ for a list of available commands.
ciscoasa>

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