软件: dynamic.cisco-ios
1: 下载dynamic bin文件 .
wget
mv dynamips-0.2.6-RC4-x86.bin /usr/local/bin/dynamips
2: 安装 需要用到的 libs.
wget
编译安装：
./configure --enable-gnu-names
make -j7 DEPSHALIBS="-lc"
make install
cp -r /usr/local/lib/libelf.so.0 /usr/lib/
cp -r /usr/local/lib/libelf-0.8.10.so /usr/lib/
3:下载 ios文件. 这里我以3640路由做例子: (其他ios 就自己去下了. 根据dynamics版本来看他所支持的ios)
wget ftp://wolf:colorwolf5768@ftp.microwolf.net/nettools/ios/c3640-i-mz.122-13.T1.bin
4:开始启动dynamips,并初始化路由:
用法如下：
dynamips -P <需要模拟的路由类型> -p 槽号:模块名 <对应路由的ISO文件名>
路由的类型，目前可以是7200、3600、2691、3725或3745，缺省是7200。
-p后面跟的是槽号:模块名，表示那个端口模块插在那个物理槽位（从0开始）中，具体的命令用法请查看官方文档。
下面我们来模拟一台Cisco 3640，其中slot0接了一个快速以太网板，slot1接了一个4端口的E1。
dynamips -P 3600 -p:NM-1FE-TX -p 1:NM-4T c3640-i-mz.122-13.T1.bin
Cisco 7200 Simulation Platform (version 0.2.6-RC4-x86)
Copyright (c) 2005,2006 Christophe Fillot.
Build date: Nov 15 2006 23:05:16
IOS image file: c3640-i-mz.122-13.T1.bin
CPU0: carved JIT exec zone of 64 Mb into 2048 pages of 32 Kb.
NVRAM is empty, setting config register to 0x2142
C3600 instance 'default' (id 0):
VM Status : 0
RAM size : 128 Mb
NVRAM size : 128 Kb
Chassis : 3640
IOS image : c3640-i-mz.122-13.T1.bin
Loading ELF file 'c3640-i-mz.122-13.T1.bin'...
ELF entry point: 0x80008000
C3600 'default': starting simulation (CPU0 PC=0xffffffffbfc00000), JIT enabled.
ROMMON emulation microcode.
Launching IOS image at 0x80008000...
Self decompressing the image : ################################################# ###################### [OK]
Invalid iomem value in ROM (5). Smart-init will
now run to compute a valid value
iomem percentage may need to be reset manually
Smart Init is enabled
smart init is sizing iomem
ID MEMORY_REQ TYPE
000044 0X0004FE00 Single Port Fast Ethernet
000054 0X0004E480 4T Mueslix Serial
0X000F3BB0 public buffer pools
0X00211000 public particle pools
TOTAL: 0X003A2E30
If any of the above Memory Requirements are
"UNKNOWN", you may be using an unsupported
configuration or there is a software problem and
system operation may be compromised.
Rounded IOMEM up to: 4Mb.
Using 3 percent iomem. [4Mb/128Mb]
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 Internetwork Operating System Software
IOS (tm) 3600 Software (C3640-I-M), Version 12.2(13)T1, RELEASE SOFTWARE (fc1)
TAC Support:
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Fri 03-Jan-03 15:10 by ccai
Image text-base: 0x60008930, data-base: 0x60C1A000
cisco 3640 (R4700) processor (revision 0xFF) with 126976K/4096K bytes of memory.
Processor board ID 00000000
R4700 CPU at 100Mhz, Implementation 33, Rev 1.2
Bridging software.
X.25 software, Version 3.0.0.
1 FastEthernet/IEEE 802.3 interface(s)
4 Serial network interface(s)
DRAM configuration is 64 bits wide with parity enabled.
125K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read/Write)
--- System Configuration Dialog ---