今天有个客户要k8升级到k9，本来想自己写一个的，看到网上这篇文章写的很详细，清晰，就转过来了！
1,通过CCO 网站进入授权页面:
PIX 开启DES 授权连接:
PIX K8 --> K9 升级授权连接:
ASA K8-->K9 升级授权连接:
2,输入设备序列号,获得授权号.
通过Show version 命令获得设备序列号,例如:
ASA1# show version
Cisco Adaptive Security Appliance Software Version 7.2(2)
Device Manager Version 5.2(2)
Compiled on Wed 22-Nov-06 14:16 by builders
System image file is "disk0:/asa722-k8.bin"
Config file at boot was "startup-config"
ASA1 up 1 day 7 hours
Hardware: ASA5520, 512 MB RAM, CPU Pentium 4 Celeron 2000 MHz
Internal ATA Compact Flash, 64MB
BIOS Flash AT49LW080 @ 0xffe00000, 1024KB
Encryption hardware device : Cisco ASA-55x0 on-board accelerator (revision 0x0)
Boot microcode : CNlite-MC-Boot-Cisco-1.2
SSL/IKE microcode: CNlite-MC-IPSEC-Admin-3.03
IPSec microcode : CNlite-MC-IPSECm-MAIN-2.04
0: Ext: GigabitEthernet0/0 : address is 0012.808c.3510, irq 9
1: Ext: GigabitEthernet0/1 : address is 0012.808c.3511, irq 9
2: Ext: GigabitEthernet0/2 : address is 0012.808c.3512, irq 9
3: Ext: GigabitEthernet0/3 : address is 0012.808c.3513, irq 9
4: Ext: Management0/0 : address is 0012.808c.350f, irq 11
5: Int: Internal-Data0/0 : address is 0000.0001.0002, irq 11
6: Int: Internal-Control0/0 : address is 0000.0001.0001, irq 5
Licensed features for this platform:
Maximum Physical Interfaces : Unlimited
Maximum VLANs : 150
Inside Hosts : Unlimited
Failover : Active/Active
VPN-DES : Enabled
VPN-3DES-AES : Disabled
Security Contexts : 10
GTP/GPRS : Enabled
VPN Peers : 750
WebVPN Peers : 750
This platform has an ASA 5520 VPN Plus license.
Serial Number: JMX0923K091
Running Activation Key: 0xdb131566 0x303388e3 0x881261f8 0x92f05c04 0x4c25c08c
3,获得授权号后,使用下面命令实现升级:在config 模式下输入下面的命令
ASA(config)# activation-key 0xe02888da 0x4ba7bed6 0xf1c123ae 0xffd8624e (输入你获得的Active-key,这个key 仅是例子)
ASA# write memory
ASA# reload (必须重新启动才能生效)
4,最后通过Show version 命令确认升级成功.
VPN-DES : Enabled
VPN-3DES-AES : Enabled
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