2）开启TFTP，浏览到IOS文件
3）删除交换机中的BIN文件及其所在目录
Cisco3550BK#dir
Directory of flash:/
2; -rwx0Jan 1 1970 00:01:22 +00:00; env_vars
3; -rwx 344Jan 1 1970 00:01:22 +00:00; system_env_vars
4; -rwx 616Mar 1 1993 06:05:47 +00:00; vlan.dat
5; -rwx5Mar 1 1993 04:51:45 +00:00; private-config.text
8; drwx; 64Mar 1 1993 00:06:05 +00:00; c3550-i9q3l2-mz.121-20.EA1a
7; -rwx;;;;;4051Mar 1 1993 04:51:45 +00:00; config.text
Cisco3550BK#cd c3550-i9q3l2-mz.121-20.EA1a
Cisco3550BK#dir
Directory of flash:/c3550-i9q3l2-mz.121-20.EA1a/
9; drwx;;;;;2688Mar 1 1993 00:03:20 +00:00; Html
91; -rwx;;3447390Mar 1 1993 00:04:24 +00:00; c3550-i9q3l2-mz.121-20.EA1a.bin
92; -rwx 255Mar 1 1993 00:04:24 +00:00; info
15998976 bytes total (9356800 bytes free)
Cisco3550BK#delete c3550-i9q3l2-mz.121-20.EA1a.bin
Delete filename [/c3550-i9q3l2-mz.121-20.EA1a/c3550-i9q3l2-mz.121-20.EA1a.bin]?
Delete flash:/c3550-i9q3l2-mz.121-20.EA1a/c3550-i9q3l2-mz.121-20.EA1a.bin? [confirm]
Cisco3550BK#dir
Directory of flash:/c3550-i9q3l2-mz.121-20.EA1a/
9; drwx;;;;;2688Mar 1 1993 00:03:20 +00:00; html
92; -rwx 255Mar 1 1993 00:04:24 +00:00; info
15998976 bytes total (12804608 bytes free)
Cisco3550BK#del html
Delete filename [/c3550-i9q3l2-mz.121-20.EA1a/html]?
Cisco3550BK#delete info
Delete filename [/c3550-i9q3l2-mz.121-20.EA1a/info]?
Delete flash:/c3550-i9q3l2-mz.121-20.EA1a/info? [confirm]
Cisco3550BK#delete /force recursive; c3550-i9q3l2-mz.121-20.EA1a
Cisco3550BK#archive download-sw /overwrite tftp://10.49.0.4/c3550-i5q3l2-tar.122-25.SEA.tar
examining image...
Loading c3550-i5q3l2-tar.122-25.SEA.tar from 10.49.0.4 (via Vlan1): !
extracting info (252 bytes)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
<omit>
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 7748608 bytes]
Image info:
Version Suffix: i5q3l2-122-25.SEA
Image Name: c3550-i5q3l2-mz.122-25.SEA.bin
Version Directory: c3550-i5q3l2-mz.122-25.SEA
Ios Image Size: 6089728
Total Image Size: 7746048
Image Feature: LAYER_3MIN_DRAM_MEG=64
Image Family: C3550
Extracting files...
Loading c3550-i5q3l2-tar.122-25.SEA.tar from 10.49.0.4 (via Vlan1): !
extracting info (252 bytes)
c3550-i5q3l2-mz.122-25.SEA/ (directory)
c3550-i5q3l2-mz.122-25.SEA/html/ (directory)
extracting c3550-i5q3l2-mz.122-25.SEA/html/more.txt (62 bytes)
extracting c3550-i5q3l2-mz.122-25.SEA/html/menu.Css (1654 bytes)!
extracting c3550-i5q3l2-mz.122-25.SEA/html/back.htm (435 bytes)
extracting c3550-i5q3l2-mz.122-25.SEA/html/images/tab_left_active.gif (852 bytes)
extracting c3550-i5q3l2-mz.122-25.SEA/html/images/122353.gif (3132 bytes)!
extracting c3550-i5q3l2-mz.122-25.SEA/c3550-i5q3l2-mz.122-25.SEA.bin (6087424 bytesextracting c3550-i5q3l2-mz.122-25.SEA/info (252 bytes)!
extracting info.ver (252 bytes)
[OK - 7748608 bytes]
New software image installed in flash:c3550-i5q3l2-mz.122-25.SEA
Configuring system to use new image...done.
Cisco3550BK#verify c3550-i5q3l2-mz.122-25.SEA.bin
Verified c3550-i5q3l2-mz.122-25.SEA.bin
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