注：升级前对设备IOS及配置文件需要进行备份。
4506A#show version
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-IPBASE-M), Version 12.2(50)SG3, RELEASE
cisco WS-C4506 (MPC8245) processor (revision 4) with 524288K bytes of memory.
Processor board ID FOX081302Z5
MPC8245 CPU at 400Mhz, Supervisor V
Last reset from PowerUp
1 Virtual Ethernet interface
68 Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.
引擎：WS-X4516 （现引擎都是SUP8+UniversalIOS，但不排除会遇到比较老的设备）
1、插入CF卡有如下提示
*Apr 8 23:37:37.775: %FILESYS-5-CFLASH: Compact flash card inserted into slot0
2、 Switch#dir slot0:
Directory of slot0:/
2 -rw- 8369 Apr 9 2015 06:35:55 +00:00 4506-oa-server_config
3 -rwx 18086076 Apr 9 2015 06:37:15 +00:00 cat4500-entservices-mz.122-54.SG1.bin
3、 copy slot0:cat4500-entservices-mz.122-54.SG1.bin bootflash:
4、 boot system flash bootflash:/cat4500-entservices-mz.122-54.SG1.bin
5、 copy slot0:4506-oa-server_config running-config
wr mem
6、 reload
本文出自 “天马行空” 博客，请务必保留此出处http://keep11.blog.51cto.com/1443840/1770136
原文地址：http://keep11.blog.51cto.com/1443840/1770136
