CCNA培訓(xùn)之Manager Ciscoppt課件

1、第七章管理Cisco設(shè)備本章目的經(jīng)過本章的學(xué)習(xí)，您應(yīng)該掌握以下內(nèi)容:獲取直接相鄰設(shè)備的信息獲取遠(yuǎn)程設(shè)備的信息清楚配置文件和IOS映象文件被加載的位置和過程CDP協(xié)議Cisco Discovery Protocol是一個提供關(guān)于直接相連的交換機(jī)、路由器和其它Cisco設(shè)備的綜合信息的專有工具 CDP 可以發(fā)現(xiàn)直接相鄰的設(shè)備而不論這些設(shè)備所運(yùn)轉(zhuǎn)的是什么協(xié)議棧 物理介質(zhì)必需可以支持Subnetwork Access Protocol (SNAP)上層地址Cisco專有的鏈路層協(xié)議介質(zhì)必需可以支持 SNAPTCP/IPNovell IPXCDP能 發(fā)現(xiàn)并顯示關(guān)于直接相連的Cisco設(shè)備的信息ATMOt

2、hersLANs幀中繼AppleTalkOthersCDP運(yùn)轉(zhuǎn)在運(yùn)用10.3或更新版Cisco IOS的路由器以及Cisco 交換機(jī)和集線器上能獲取的信息包括:設(shè)備名對應(yīng)各協(xié)議的地址端口名角色特征平臺 CDPshow cdpCDPCDP用CDP發(fā)現(xiàn)直接相鄰的設(shè)備運(yùn)用 CDP交換機(jī)B路由器A路由器B交換機(jī)AS0S1RouterA#sh cdp ? entry Information for specific neighbor entry interface CDP interface status a

3、nd configuration neighbors CDP neighbor entries traffic CDP statistics RouterA(config)#no cdp run RouterA(config)#interface serial0 RouterA(config-if)#no cdp enable 交換機(jī)A同時也顯示其Mac地址運(yùn)用show cdp neighbor 命令RouterA#sh cdp neighborsCapability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S

4、- Switch, H - Host, I - IGMP, r - RepeaterDevice ID Local Intrfce Holdtme Capability Platform Port IDRouterB Ser 0 148 R 2522 Ser 1SwitchA0050BD855780 Eth 0 167 T S 1900 2 S0S1交換機(jī)B路由器A路由器B交換機(jī)A運(yùn)用show cdp entry 命令RouterA#sh cdp entry *-Device ID: RouterB

5、 Entry address(es): IP address: Platform: cisco 2522, Capabilities: Router Interface: Serial0, Port ID (outgoing port): Serial1Holdtime : 168 secVersion :Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-JS-L), Version 12.0(3), RELEASE SOFTWARE (fci)Copyright (c) 19

6、86-1999 by cisco Systems, Inc.Compiled Mon 08-Feb-99 18:18 by phanguyeS0S1交換機(jī)B路由器A路由器B交換機(jī)A其它CDP命令RouterA#sh cdp trafficCDP counters :Packets output: 56, Input: 38Hdr syntax: 0, Chksum error: 0, Encaps failed: 3No memory: 0, Invalid packet: 0, Fragmente

7、d: 0RouterA#sh cdp interface BRI0 is administratively down, line protocol is down Encapsulation HDLC Sending CDP packets every 60 seconds Holdtime is 180 secondsS0S1交換機(jī)B路由器A路由器B交換機(jī)A運(yùn)用ping 和trace 命令測試對遠(yuǎn)端設(shè)備的銜接性和途徑Router#ping 0 Type escape sequenc

8、e to abort.Sending 5, 100-byte ICMP Echos to 0, timeout is 2 seconds:!Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/4 msRouter#trace 0 Type escape sequence to abort.Tracing the route to 0 1 0 4 msec 4 msec 4 msecRouter#路由器加電/啟動順序加電自檢 (POST)加載并運(yùn)轉(zhuǎn)啟動引導(dǎo)微

9、代碼尋覓IOS映象文件加載IOS映象文件尋覓配置文件加載配置文件正常運(yùn)轉(zhuǎn)路由器內(nèi)部組件RAM配置存放器ROMFlashNVRAM端口ROM 功能ROM存放完成根本功能的微代碼BootstrapMini IOSROMmonitorPOSTshow version控制臺確認(rèn)當(dāng)前的配置存放器值wg_ro_a#show versionCisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-JS-L), Version 12.0(3), RELEASE SOFTWARE (fc1)Copyright (c) 1

10、986-1999 by cisco Systems, Inc.Compiled Mon 08-Feb-99 18:18 by phanguyeImage text-base: 0 x03050C84, data-base: 0 x00001000ROM: System Bootstrap, Version 11.0(10c), SOFTWAREBOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c), RELEASE SOFTWARE (fc1)wg_ro_a uptime is 20 minutesSystem re

11、started by reloadSystem image file is flash:c2500-js-l_120-3.bin-More-Configuration register is 0 x2102用命令show version所顯示的配置存放器值設(shè)定配置存放器的值配置存放器的3, 2, 1和0位是啟動選項位Router#configure terminalRouter(config)#config-register 0 x2102Ctrl-ZRouter#reload設(shè)定配置存放器的值配置存放器的3, 2, 1和0位是啟動選項位配置存放器啟動選項部分的值0 x0含義進(jìn)入ROM mon

12、itor方式(人工啟動時用 b 命令)Router#configure terminalRouter(config)#config-register 0 x2102Ctrl-ZRouter#reload設(shè)定配置存放器的值配置存放器的3, 2, 1和0位是啟動選項位配置存放器啟動選項部分的值0 x00 x1含義進(jìn)入ROM monitor方式(人工啟動時用 b 命令)自動從ROM啟動(提供完好IOS的一個子集)Router#configure terminalRouter(config)#config-register 0 x2102Ctrl-ZRouter#reload配置存放器的3, 2, 1

13、和0位是啟動選項位用命令show version來檢查配置存放器的值設(shè)定配置存放器的值配置存放器啟動選項部分的值0 x00 x2 to 0 xF0 x1含義進(jìn)入ROM monitor方式(人工啟動時用 b 命令)Rommon檢查NVRAM之 boot system 命令(假設(shè)路由器配有Flash那么缺省值為 0 x2)自動從ROM啟動(提供完好IOS的一個子集)Router(boot)Router#configure terminalRouter(config)#config-register 0 x2102Ctrl-ZRouter#reload尋覓IOS映象文件Flashshowversio

14、nshow startup-configIOS搜索順序:1. 檢查配置存放器 2. 解析NVRAM中的配置文件3. 缺省是運(yùn)用Flash中的第一個文件4. 嘗試從網(wǎng)絡(luò)啟動5. RXBOOT6. ROMMON控制臺配置存放器NVRAM從Flash加載IOS映象文件FlashIOSIOSshow flashFlash中的映象文件解緊縮到RAM中控制臺RAM運(yùn)用 show flash 命令wg_ro_a#sh flash System flash directory:File Length Name/status 1 10084696 c2500-js-l_120-3.bin 10084760 bytes used, 6692456 available, 16777216 total16384K bytes of processor board System flash (Read ONLY) 加載配置文件控制臺IOSSetup utilityshowstartup-configshowrunning-config從NVRAM中加載并運(yùn)轉(zhuǎn)配置文件假設(shè)NVRAM中沒有配置文件, 進(jìn)入setup方式ConfigConfigRAMNVRAM運(yùn)用 show running 和 show startup 命令wg_ro_c#show startup-configUsing 9 out of 3