更新cisco 3750G的IOS支援進階路由與ssh功能

      為了能讓cisco交換的遠端連接配接對于賬号密碼的安全性有所提高，可以用ssh方式連接配接終端，但是很多出廠的交換機預設的ios是不支援ssh這個功能的，為了能讓cisco交換機支援ssh，必須更新帶“K9”的IOS.下面是出廠cisco 3750G-24TS預設ios的截圖

<a href="http://blog.51cto.com/attachment/201003/001755419.jpg" target="_blank"></a>

3750交換機支援SSH需要12.1（11）EA1以上版本軟體。

emi是增強型多層鏡像，也就是對路由協定的支援更全；而smi是标準多層鏡像。

特性集共有三種：IP BASE、IP Services和Advanced IP Services。

IP BASE：支援第2層轉發和基本的第3層路由，包括EIGRP stub模式。

IP Services：包括IP BASE特性集，支援進階第3層路由，如OSPF群組播路由。

Advanced IP Services：包括IP Services，支援IPv6功能。

<b>解決方案步驟：</b><b> </b>

<b>1.    </b><b>從</b><b>cisco</b><b>官網下載下傳</b><b>ios</b>

<b>2.    </b><b>更新</b><b>ios</b>

<b>3.    </b><b>配置交換機支援</b><b>ssh</b>

<b>從cisco官網下載下傳ios</b>

打開cisco官網

<a href="http://www.cisco.com/"><b>http://www.cisco.com<b>找到</b><b>products&amp;services </b><b>點選選擇</b><b>cisco ios and nc-os software</b></b></a>

也可以直接打開以下連結：

http://tools.cisco.com/support/downloads/go/Redirect.x?mdfid=282504484

會跳出登入界面

未注冊的使用者根據注冊資訊填寫就行，但有一點就是郵箱一定要填寫正确，因為注冊後會發一份郵件到您的郵箱去激活才可以使用

<a href="http://blog.51cto.com/attachment/201003/002453696.jpg" target="_blank"></a>

接下來登入進去，選擇字尾帶SE版本就會自動連結其他頁面去了

<a href="http://blog.51cto.com/attachment/201003/002557259.jpg" target="_blank"></a>

跳轉下一個頁面如下，選擇要找交換機型号

<a href="http://blog.51cto.com/attachment/201003/002635849.jpg" target="_blank"></a>

跳轉下一個頁面如下，點解下載下傳軟體

<a href="http://blog.51cto.com/attachment/201003/002709126.jpg" target="_blank"></a>

跳轉下一個頁面如下，選擇最新版本下載下傳。但根據經驗的話，最好選擇最新版本後退一兩個版本。這裡我們選擇最新IOS版本，并下載下傳帶“K9”字元的ios

<b>……………………………………………………省略</b>

<a href="http://blog.51cto.com/attachment/201003/002741953.jpg" target="_blank"></a>

跳轉下一個頁面如下

<a href="http://blog.51cto.com/attachment/201003/002812721.jpg" target="_blank"></a>

<a href="http://blog.51cto.com/attachment/201003/002933574.jpg" target="_blank"></a>

這樣c3750-ipbasek9-mz.122-53.SE3.bin就下載下傳來。後來發現！由于在應用中， cisco 3750G需支援其他一些路由協定。是以我這裡就以c3750-ipservicesk9-mz.122-50.SE3.bin為更新版本IOS

提供一個非官網下載下傳連結：

<a target="_blank" href="ftp://87.241.226.154/3750/c3750-ipservicesk9-mz.122-50.SE3.bin">ftp://87.241.226.154/3750/c3750-ipservicesk9-mz.122-50.SE3.bin</a>

11.6 MB大小

CISCO Server TFTP 下載下傳位址：

<a target="_blank" href="ftp://87.241.226.154/3750/c3750-ipservicesk9-mz.122-50.SE3.bin">http://www.skycn.com/soft/18565.html#downUrlMap</a>

這裡以CISCO Server TFTP更新方式，如下圖

拷貝c3750-ipservicesk9-mz.122-50.SE3.bin

到TFTP目錄下面

<a href="http://blog.51cto.com/attachment/201003/003124658.jpg" target="_blank"></a>

<b>更新ios</b>

3750G(config)#interface vlan 1

3750G(config-if)#ip add

3750G(config-if)#ip address 192.168.100.2 255.255.255.0

3750G(config-if)#end

3750G#ping 192.168.100.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.100.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

3750G#dir

Directory of flash:/

    3 -rwx        1754   Feb 5 2010 16:40:45 +00:00 config.text

    4 -rwx           5   Feb 5 2010 16:40:45 +00:00 private-config.text

    7 drwx         192   Mar 1 1993 00:07:31 +00:00 c3750-ipbase-mz.122-35.SE5

32514048 bytes total (22883840 bytes free)

3750G#delete/force(不再詢問确認) /recursive(删除目錄下的子目錄和檔案) c3750-ipbase-mz.122-35.SE5

3750G#copy tftp flash     （從tftp下載下傳ios）

Address or name of remote host 192.168.100.1 輸入tftp位址

Source filename c3750-ipservicesk9-mz.122-50.SE3.bin   ios名稱

Destination filename [c3750-ipservicesk9-mz.122-50.SE3.bin]回車

Accessing tftp://192.168.100.1/c3750-ipservicesk9-mz.122-50.SE3.bin...

Loading c3750-ipservicesk9-mz.122-50.SE3.bin from 192.168.100.1 (via Vlan1):

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[OK - 12239852 bytes]

3750G#conf t

Enter configuration commands, one per line. End with CNTL/Z.

3750G(config)#boot system flash:c3750-ipservicesk9-mz.122-50.SE3.bin

設定啟動c3750-ipservicesk9-mz.122-50.SE3.bin為新IOS

3750G(config)#exit

3750G#wr

*Mar 1 03:59:40: %SYS-5-CONFIG_I: Configured from console by consoler

Building configuration...

[OK]

3750G#reload 

Proceed with reload? [confirm] <b>回車</b>

*Mar 1 03:59:51: %SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload Command.

Base ethernet MAC Address: 3c:df:1e:c4:a1:00

Xmodem file system is available.

The password-recovery mechanism is enabled.

Initializing Flash...

flashfs[0]: 501 files, 7 directories

flashfs[0]: 0 orphaned files, 0 orphaned directories

flashfs[0]: Total bytes: 32514048

flashfs[0]: Bytes used: 21870080

flashfs[0]: Bytes available: 10643968

flashfs[0]: flashfs fsck took 8 seconds.

...done Initializing Flash.

Boot Sector Filesystem (bs) installed, fsid: 3

done.

Loading "flash:c3750-ipservicesk9-mz.122-

50.SE3.bin"...@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

File "flash:c3750-ipservicesk9-mz.122-50.SE3.bin" uncompressed and installed, entry point: 0x1000000

executing...

              Restricted Rights Legend

Use, duplication, or disclosure by the Government is

subject to restrictions as set forth in subparagraph

(c) of the Commercial Computer Software - Restricted

Rights clause at FAR sec. 52.227-19 and subparagraph

(c) (1) (ii) of the Rights in Technical Data and Computer

Software clause at DFARS sec. 252.227-7013.

           cisco Systems, Inc.

           170 West Tasman Drive

           San Jose, California 95134-1706

Cisco IOS Software, C3750 Software (C3750-IPSERVICESK9-M), Version 12.2(50)SE3, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2009 by Cisco Systems, Inc.

Compiled Wed 22-Jul-09 06:19 by prod_rel_team

Image text-base: 0x01000000, data-base: 0x02D00000

Initializing flashfs...

flashfs[1]: 501 files, 7 directories

flashfs[1]: 0 orphaned files, 0 orphaned directories

flashfs[1]: Total bytes: 32514048

flashfs[1]: Bytes used: 21870080

flashfs[1]: Bytes available: 10643968

flashfs[1]: flashfs fsck took 2 seconds.

flashfs[1]: Initialization complete....done Initializing flashfs.

Checking for Bootloader upgrade.. upgrading.. writing boot sectors..done.

The system will now restart

Boot Sector Filesystem (bs) installed, fsid: 2

……………………………………………………………….中間省略

Switch Ports Model           SW Version        SW Image                

------ ----- -----             ----------            ----------              

*    1 28 WS-C3750G-24TS-1U  12.2(50)SE3    C3750-IPSERVICESK9-M

<b>說明更新成功了</b>

Press RETURN to get started!

<b>配置交換機支援ssh</b>

3750G(config)# enable secret viong

3750G(config)#username viong password 123456

3750G(config)# line vty 0 4

3750G(config-line)#login local

3750G(config-line)#transport input ssh

<b>設定讓</b><b>cisco</b><b>交換機支援</b><b>SSH</b><b>連接配接</b>

也許就那麼幾個步驟！有點畫蛇添足寫這麼多。請别嫌棄我

但為了規範點，還是辛苦點整理出來。

    本文轉自viong 51CTO部落格，原文連結：http://blog.51cto.com/viong/282327，如需轉載請自行聯系原作者