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）Routerenable (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 expressionappletalk Appletalk interface subcommandsarp Set arp type (arpa, probe, snap) or timeoutbackup Modify backup parametersbandwidth Set bandwidth informational parameterbridge-group Transparent bridging interface parameterscarrier-delay Specify delay for interface transitionscdp CDP interface subcommandscmns OSI CMNS. (此处省略)standby Hot standby interface subcommandstimeout Define timeout values for this interfacetraffic-shape Enable Traffic Shaping on an Interface or Sub-Interfacetransmit-interface Assign a transmit interface to a receive-only interfacetx-ring-limit Configure PA level transmit ring limitRouter(config-if)#ip add? (使用“？”查看以add开头的命令)addressRouter(config-if)#ip address? (使用“？”查看ip address后面的命令)A.B.C.D IP addressRouter(config-if)#ip address 192.168.1.1 ?A.B.C.D IP subnet maskRouter(config-if)#ip address 192.168.1.1 255.255.255.0 ?secondary Make this IP address a secondary addressRouter(config-if)#ip address 192.168.1.1255.255.255.0Router(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 entryalias Create command aliasappletalk Appletalk global configuration commandsarap Appletalk Remote Access Protocolarp Set a static ARP entryasync-bootp Modify system bootp parameters. (此处省略)tftp-server Provide TFTP service for netload requeststime-range Define time range entriesusemame Establish User Name Authenticationvirtual-profile Virtual Profile configurationx25 X.25 Level 3x29 X29 commandsRouter(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 entryaccess-profile Apply user-profile to interfaceaccess-template Create a temporary Access-List entryarchive manage archive filesbfe For manual emergency modes settingcd Change current directoryclear Reset functions. (此处省略)telnet Open a telnet connectionterminal Set terminal line parameterstest Test subsystems, memory, and interfacestraceroute Trace route to destinationtunnel Open a tunnel connectionudptn Open an udptn connectionundebug Disable debugging functions (see also debug)verify Verify a filewhere List active connectionswrite Write running configuration to memory, network, or terminalx28 Become an X.28 PADx3 Set X.3 parameters on PADRouter#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 entryaccess-profile Apply user-profile to interface. (此处省略)udptn Open an udptn connectionwhere List active connectionsx28 Become an X.28 PADx3 Set X.3 parameters on PADRoutershow version (查看路由器的版本信息和组件信息)Cisco Internetwork Operating System SoftwareIOS(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 yiyanImage text-base: 0x0000144C, data-base: 0x00843EA8ROM: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-onSystem 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 00000000Bridging 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)Routershow flash (查看Flash具体信息)System flash directory:File Length Name/status1 4289602 c2500-d-1.121-8a.mz4289668 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