show version看IOS信息

cisco2621xm#show version
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-I-M), Version 12.3(5d), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Wed 09-Jun-04 00:05 by kellythw
Image text-base: 0x80008098, data-base: 0x80CA63B4

ROM: System Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)

cisco2621xm uptime is 4 hours, 53 minutes
System returned to ROM by power-on
System restarted at 15:40:05 UTC Tue Dec 7 2004
System image file is "flash:c2600-i-mz.123-5d.bin"

cisco 2621XM (MPC860P) processor (revision 0x301) with 126976K/4096K bytes of me
mory.
Processor board ID FOC08382DBW (3885486175)
M860 processor: part number 5, mask 2
Bridging software.
X.25 software, Version 3.0.0.
2 FastEthernet/IEEE 802.3 interface(s)
32K bytes of non-volatile configuration memory.
32768K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

这里面有很多信息
比如
IOS (tm) C2600 Software (C2600-I-M), Version 12.3(5d), RELEASE SOFTWARE (fc1)   —— IOS的信息
System image file is "flash:c2600-i-mz.123-5d.bin" —— IOS镜像文件具体名字
cisco 2621XM (MPC860P) processor (revision 0x301) with 126976K/4096K bytes of memory.
32768K bytes of processor board System flash (Read/Write)
FLASH和RAM的大小

比如上面
"flash:c2600-i-mz.123-5d.bin"说明是2600系列路由器
cisco 2621XM (MPC860P) processor (revision 0x301) 说明是2621
126976K/4096K bytes of memory.
32768K bytes of processor board System flash (Read/Write)
每种型号的FLASH和RAM的大小也是不一样的


另外还可以通过防伪标签、序列号、思科产品维修服务登记卡3种查询方式来确认思科设备的真假。
查询方式         联系方式         功能介绍
防伪标签查询         800 810 3153         提供产品防伪标签查询
序列号查询         sn-check@external.cisco.com         根据用户提供的产品序列号，查询您所购买产品的服务等级：包括产品名称，服务级别，合作伙伴名称，保修期限等信息。源自IT认证考试资源网
维修服务
登记卡查询         800 810 1515 (#2)         查询维修服务登记卡

还有自己看的
思科路由器：

　　1。内部有黄贴，无法作假。

　　2。防伪贴触摸有凹凸感，为真的。

　　3。封箱带上的cisco标志清晰，假货模糊。