实验4：模式切换、上下文帮助及查看有关信息 实验4：模式切换、上下文帮助及查看有关信息 　　Router> (用户执行模式） 　　Router>enable (进入特权执行模式) 　　Routed (特权执行模式提示符) 　　Router#conf t (向全局配置模式切换) 　　Enter configuration commands, one per line. End with CNTL/Z. 　　Router(config)# (全局配置模式提示符) 　　Router(config)#interface ethernet 0 (进入interface配置模式) 　　Router(config-if)# ( interface配置模式提示符) 　　Router(config-if)#? (查看interface配置模式下的所有配置命令) 　　Interface configuration commands: 　　access-expression Build a bridge boolean access expression 　　appletalk Appletalk interface subcommands 　　arp Set arp type (arpa, probe, snap) or timeout 　　backup Modify backup parameters 　　bandwidth Set bandwidth informational parameter 　　bridge-group Transparent bridging interface parameters 　　carrier-delay Specify delay for interface transitions 　　cdp CDP interface subcommands 　　cmns OSI CMNS 　　... (此处省略) 　　standby Hot standby interface subcommands 　　timeout Define timeout values for this interface 　　traffic-shape Enable Traffic Shaping on an Interface or Sub-Interface 　　transmit-interface Assign a transmit interface to a receive-only interface 　　tx-ring-limit Configure PA level transmit ring limit 　　 　　Router(config-if)#ip add? (使用“？”查看以add开头的命令) 　　address 　　Router(config-if)#ip address? (使用“？”查看ip address后面的命令) 　　A.B.C.D IP address 　　Router(config-if)#ip address 192.168.1.1 ? 　　A.B.C.D IP subnet mask 　　Router(config-if)#ip address 192.168.1.1 255.255.255.0 ? 　　secondary Make this IP address a secondary address 　　 　　 　　Router(config-if)#ip address 192.168.1.1255.255.255.0 　　Router(config-if)#exit (退出interface配置模式，进入全局配置模式) 　　Router(config)#? (查看全局配置模式下的所有配置命令) 　　configure commands: 　　aaa Authentication, Authorization and Accounting. 　　access-list Add an access list entry 　　alias Create command alias 　　appletalk Appletalk global configuration commands 　　arap Appletalk Remote Access Protocol 　　arp Set a static ARP entry 　　async-bootp Modify system bootp parameters 　　... (此处省略) 　　tftp-server Provide TFTP service for netload requests 　　time-range Define time range entries 　　usemame Establish User Name Authentication 　　virtual-profile Virtual Profile configuration 　　x25 X.25 Level 3 　　x29 X29 commands 　　 　　Router(config)#exit (退出配置模式，进入特权执行模式) 　　Router#? (查看特权执行模式下所有的命令) 　　Exec commands: 　　access-enable Create a temporary Access-List entry 　　access-profile Apply user-profile to interface 　　access-template Create a temporary Access-List entry 　　archive manage archive files 　　bfe For manual emergency modes setting 　　cd Change current directory 　　clear Reset functions 　　... (此处省略) 　　telnet Open a telnet connection 　　terminal Set terminal line parameters 　　test Test subsystems, memory, and interfaces 　　traceroute Trace route to destination 　　tunnel Open a tunnel connection 　　udptn Open an udptn connection 　　undebug Disable debugging functions (see also 'debug') 　　verify Verify a file 　　where List active connections 　　write Write running configuration to memory, network, or terminal 　　x28 Become an X.28 PAD 　　x3 Set X.3 parameters on PAD 　　 　　Router#disable (退出特权执行模式，进入用户执行模式) 　　Router>? (查看用户执行模式下的所有命令) 　　Exec commands: 　　access-enable Create a temporary Access-List entry 　　access-profile Apply user-profile to interface 　　... (此处省略) 　　udptn Open an udptn connection 　　where List active connections 　　x28 Become an X.28 PAD 　　x3 Set X.3 parameters on PAD 　　Router>show version (查看路由器的版本信息和组件信息) 　　Cisco Internetwork Operating System Software 　　IOS(tm)2500 Software(C2500-D-L),Version 12.1(8a),RELEASE SOFTWARE(fc1) IOS版本信息 　　Copyright (c) 1986-2001 by cisco Systems, Inc. 　　Compiled Wed 23-May-01 01:20 by yiyan 　　Image text-base: 0x0000144C, data-base: 0x00843EA8 　　ROM:System Bootstrap. Version 5.2(8a), RELEASE SOFTWARE ( ROM 版本信息) 　　BOOTFLASH: 3000 Bootstrap Software (IGS-RXBOOT), Version 10.2(8a), RELEASE SOFTWARE (fcl) 　　 　　Router uptime is 56 minutes (本路由器的开机时间) 　　System returned to ROM by power-on 　　System image file is "flash:c2500-d4.121-8a.mz" ( Flash中的IOS映像文件名) 　　cisco 2500 (68030) processor (revision L) with 14336K/2048K bytes of memory. (处理器信息) 　　Processor board ID 03215594, with hardware revision 00000000 　　Bridging software. 　　X.25 software, Version 3.0.0. 　　2Ethernet/IEEE 802.3 mterface(s) (路由器物理接口) 　　2Serial network interface(s) (路由器物理接口) 　　32K bytes of non-volatile configuration memory. ( NVRAM, 大小为32K ) 　　8192K bytes of processor board System flash (Read/Write) (Flash, 8192K) 　　Configuration register is 0x2102 (配置寄存器值) 　　 　　Router>show flash (查看Flash具体信息) 　　System flash directory: 　　File Length Name/status 　　1 4289602 c2500-d-1.121-8a.mz 　　[4289668 bytes used, 4098940 available, 8388608 total] ( Flash的已用空间、可用空间和总空间) 　　8192K bytes of processor board System flash (Read/Write) ( Flash的容量及状态) 　　Router>