操作與配置CiscoIOS設(shè)備.ppt

第四章 操作與配置 Cisco IOS設(shè)備,本章目標(biāo),通過(guò)本章的學(xué)習(xí)，您應(yīng)該掌握以下內(nèi)容: 開(kāi)啟交換機(jī)和路由器并觀察其啟動(dòng)過(guò)程 注意交換機(jī)的出廠初始配置情況，完成路由器的初始參數(shù)配置 在網(wǎng)絡(luò)設(shè)備上進(jìn)入并辨識(shí)不同的命令模式,本章目標(biāo)(續(xù)),在不同的用戶界面下應(yīng)用各種幫助和命令行編輯功能 查看并確認(rèn)并于各網(wǎng)絡(luò)設(shè)備的基本信息,Cisco IOS 軟件提供多種網(wǎng)絡(luò)服務(wù)進(jìn)而支持各種網(wǎng)絡(luò)應(yīng)用.,Cisco 互連網(wǎng)操作系統(tǒng)(IOS)軟件,網(wǎng)絡(luò)設(shè)備的配置,基于以下各方面來(lái)配置設(shè)備: 所需功能的網(wǎng)絡(luò)策略 與協(xié)議關(guān)聯(lián)的地址和相關(guān)參數(shù) 管理方面的需要 交換機(jī)將出廠缺省設(shè)置作為初始配置 如果路由器中沒(méi)有配置文件，會(huì)提示進(jìn)入初始化設(shè)置過(guò)程,硬件自檢 定位并加載Cisco IOS映象文件 定位并運(yùn)行配置文件,Cisco設(shè)備的簡(jiǎn)單啟動(dòng)過(guò)程,可以通過(guò)多種途徑來(lái)配置 配置直接在設(shè)備的內(nèi)存中生效,控制端口,Aux 端口,端口,PC or Unix服務(wù)器,Web 或網(wǎng)絡(luò)管 理服務(wù)器,虛擬終端,多種途徑的配置,Telnet,TFTP,提供命令行界面 在不同的網(wǎng)絡(luò)設(shè)備上運(yùn)行時(shí)有差別 在命令模式下可以鍵入或粘貼命令 鍵入命令后回車，設(shè)備即解析和執(zhí)行所鍵入的命令 兩個(gè)主要命令模式是用戶模式和特權(quán)模式 不同的命令模式有不同的提示符,Cisco IOS,Cisco IOS用戶界面的基本特性,用戶模式 對(duì)交換機(jī)和路由器的有限操作 命令提示符為 主機(jī)名,主要有兩個(gè)命令模式提供命令鍵入.,模式一:,Cisco IOS的主要命令模式,特權(quán)(或enable)模式 對(duì)交換機(jī)和路由器更深入的操作 有配置和監(jiān)視權(quán)力 是進(jìn)入其它配置模式的前提 命令提示符為 主機(jī)名#,模式二 (也是最常用的模式):,Cisco IOS的主要命令模式(續(xù)),系統(tǒng)啟動(dòng)例程會(huì)初始化交換機(jī) 初始啟動(dòng)利用缺省配置參數(shù),1. 啟動(dòng)前確認(rèn)正確連接線纜和控制線 2. 接入電源 3. 觀察啟動(dòng)順序 面板上的指示燈LEDs Cisco IOS輸出到控制臺(tái)上的內(nèi)容,交換機(jī)的初始啟動(dòng),檢查交換機(jī)指示燈(LEDs),交換機(jī)自檢期間的端口指示燈,1. 啟動(dòng)時(shí)，所有端口指示燈變綠. 2. 每個(gè)端口自檢完畢，對(duì)應(yīng)的指示燈熄滅. 3. 如果端口自檢失敗, 對(duì)應(yīng)指示燈呈黃色. 4. 如果有任何自檢失敗情況，系統(tǒng)指示燈呈現(xiàn)黃色. 5. 如果沒(méi)有自檢失敗, 自檢過(guò)程完成. 6. 隨著自檢過(guò)程的完成, 指示燈閃亮后熄滅.,交換機(jī)初次啟動(dòng)時(shí)的顯示信息,控制臺(tái)連接,Catalyst 1900 Management Console Copyright (c) Cisco Systems, Inc. 1993-1998 All rights reserved. Enterprise Edition Software Ethernet Address: 00-50-BD-73-E2-C0 PCA Number: 73-3121-01 PCA Serial Number: FAA0252A0QX Model Number: WS-C1924-EN System Serial Number: FAA0304S0U3 Power Supply S/N: PHI025101F3 - 1 user(s) now active on Management Console. User Interface Menu M Menus K Command Line I IP Configuration Enter Selection:,控制臺(tái),登入交換機(jī)并鍵入特權(quán)模式密碼, enable Enter password: # # disable quit,用戶模式提示,特權(quán)模式提示,上下文關(guān)聯(lián)幫助,錯(cuò)誤信息提示,指出所輸入交換機(jī)命令的錯(cuò)誤所在，以便于修改或糾正.,可以重新調(diào)出一個(gè)較長(zhǎng)或較復(fù)雜的命令或其它內(nèi)容，用來(lái)再次運(yùn)行、查看或修改.,之前命令保存區(qū),交換機(jī)命令行幫助機(jī)制,提供命令清單和與特定命令相關(guān)聯(lián)的參數(shù).,Switch#show interfaces,Switch#show version,顯示交換機(jī)初始啟動(dòng)的狀態(tài),Switch#show running-config,顯示交換機(jī)的各種運(yùn)行狀態(tài),wg_sw_c#show version Cisco Catalyst 1900/2820 Enterprise Edition Software Version V8.01.01 written from 171.068.229.225 Copyright (c) Cisco Systems, Inc. 1993-1998 wg_sw_c uptime is 15day(s) 21hour(s) 53minute(s) 11second(s) cisco Catalyst 1900 (486sxl) processor with 2048K/1024K bytes of memory Hardware board revision is 5 Upgrade Status: No upgrade currently in progress. Config File Status: No configuration upload/download is in progress 27 Fixed Ethernet/IEEE 802.3 interface(s) Base Ethernet Address: 00-50-BD-73-E2-C0,交換機(jī)之show version 命令,wg_sw_c#show run Building configuration. Current configuration: ! hostname “wg_sw_c“ ! ip address 3 ip default-gateway ! interface Ethernet 0/1 interface Ethernet 0/24 ! Interface Ethernet 0/25 ! interface FastEthernet 0/26 ! interface FastEthernet 0/27,交換機(jī)之show running-configuration 命令,wg_sw_c#show run Building configuration. Current configuration: ! hostname “wg_sw_c“ ! ip address 3 ip default-gateway ! interface Ethernet 0/1 interface Ethernet 0/12 ! Interface Ethernet 0/25 ! interface FastEthernet 0/26 ! interface FastEthernet 0/27,Catalyst 1924,Catalyst 1912,wg_sw_c#show interfaces ethernet 0/1 Ethernet 0/1 is Enabled Hardware is Built-in 10Base-T Address is 0050.BD73.E2C1 MTU 1500 bytes, BW 10000 Kbits 802.1d STP State: Forwarding Forward Transitions: 1 Port monitoring: Disabled Unknown unicast flooding: Enabled Unregistered multicast flooding: Enabled Description: Duplex setting: Half duplex Back pressure: Disabled -More-,交換機(jī)之show interfaces命令,wg_sw_a#show ip IP Address: 1 Subnet Mask: Default Gateway: Management VLAN: 1 Domain name: Name server 1: Name server 2: HTTP server : Enabled HTTP port : 80 RIP : Enabled wg_sw_a#,查看交換機(jī)的IP地址,配置模式: 全局配置模式 wg_sw_a# conf term wg_sw_a(config)# 端口配置模式 wg_sw_a(config)# interface e0/1 wg_sw_a(config-if)#,配置交換機(jī),配置交換機(jī)的各種標(biāo)識(shí),為交換機(jī)設(shè)置本地標(biāo)識(shí),wg_sw_a(config)# ip address ip address mask,wg_sw_a(config)#ip address 1 ,配置交換機(jī)IP地址,系統(tǒng)啟動(dòng)例程會(huì)初始化路由器 如果需要，路由器可以有選擇性地回退啟動(dòng),Check hardware,Find and load Cisco IOS software image,Find and apply router configuration information,Load Bootstrap,1. 啟動(dòng)前確認(rèn)正確連接線纜和控制線 2. 按下電源開(kāi)關(guān) 3. 觀察啟動(dòng)順序 Cisco IOS輸出到控制臺(tái)上的內(nèi)容,Cisco路由器的初始啟動(dòng),沒(méi)有配置文件與有配置文件的路由器啟動(dòng)對(duì)比,- System Configuration Dialog - Continue with configuration dialog? yes/no:yes At any point you may enter a question mark ? for help. Use ctrl-c to abort configuration dialog at any prompt. Default settings are in square brackets .,Setup模式,wg_ro_c con0 is now available Press RETURN to get started.,wg_ro_c,路由器啟動(dòng)時(shí)在控制臺(tái)上的輸出內(nèi)容,控制臺(tái),Setup: 初始配置對(duì)話框,Router#setup - System Configuration Dialog - Continue with configuration dialog? yes/no: y At any point you may enter a question mark ? for help. Use ctrl-c to abort configuration dialog at any prompt. Default settings are in square brackets . Basic management setup configures only enough connectivity for management of the system, extended setup will ask you to configure each interface on the system Would you like to enter basic management setup? yes/no: n,預(yù)先瀏覽端口配置情況,First, would you like to see the current interface summary? yes: Interface IP-Address OK? Method Status Protocol BRI0 unassigned YES unset administratively down down BRI0:1 unassigned YES unset administratively down down BRI0:2 unassigned YES unset administratively down down Ethernet0 unassigned YES unset administratively down down Serial0 unassigned YES unset administratively down down,自檢過(guò)程中所找到的端口,設(shè)置全局參數(shù),初始化全局參數(shù),Configuring global parameters: Enter host name Router:wg_ro_c The enable secret is a password used to protect access to privileged EXEC and configuration modes. This password, after entered, becomes encrypted in the configuration. Enter enable secret: cisco The enable password is used when you do not specify an enable secret password, with some older software versions, and some boot images. Enter enable password: sanfran The virtual terminal password is used to protect access to the router over a network interface. Enter virtual terminal password: sanjose Configure SNMP Network Management? no:,設(shè)置全局參數(shù)(續(xù)),初始化協(xié)議配置,Configure LAT? yes: n Configure AppleTalk? no: Configure DECnet? no: Configure IP? yes: Configure IGRP routing? yes: n Configure RIP routing? no: Configure CLNS? no: Configure IPX? no: Configure Vines? no: Configure XNS? no: Configure Apollo? no:,設(shè)置端口參數(shù),BRI interface needs isdn switch-type to be configured Valid switch types are : 0 noneOnly if you dont want to configure BRI. 1 basic-1tr61TR6 switch type for Germany 2 basic-5essAT mask is /24 Do you want to configure Serial0 interface? no:,設(shè)置腳本的確認(rèn)與應(yīng)用,The following configuration command script was created: hostname Router enable secret 5 $1$/CCk$4r7zDwDNeqkxFO.kJxC3G0 enable password sanfran line vty 0 4 password sanjose no snmp-server ! no appletalk routing no decnet routing ip routing no clns routing no ipx routing no vines routing no xns routing no apollo routing isdn switch-type basic-5ess,interface BRI0 shutdown no ip address ! interface Ethernet0 no shutdown ip address 1 no mop enabled ! interface Serial0 shutdown no ip address end 0 Go to the IOS command prompt without saving this config. 1 Return back to the setup without saving this config. 2 Save this configuration to nvram and exit. Enter your selection 2:,Console,wg_ro_c wg_ro_cenable wg_ro_c# wg_ro_c#disable wg_ro_c wg_ro_clogout,wg_ro_c con0 is now available Press RETURN to get started.,用戶模式提示,特權(quán)模式提示,登入路由器,只要所輸命令串在全部命令中是唯一的，可以將一個(gè)命令盡可能地簡(jiǎn)寫(xiě)，,路由器在用戶模式下的命令清單,wg_ro_c? Exec commands: access-enable Create a temporary Access-List entry atmsig Execute Atm Signalling Commands cd Change current device clear Reset functions connect Open a terminal connection dir List files on given device disable Turn off privileged commands disconnect Disconnect an existing network connection enable Turn on privileged commands exit Exit from the EXEC help Description of the interactive help system lat Open a lat connection lock Lock the terminal login Log in as a particular user logout Exit from the EXEC - More -,wg_ro_c#? 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 bfe For manual emergency modes setting cd Change current directory clear Reset functions clock Manage the system clock configure Enter configuration mode connect Open a terminal connection copy Copy from one file to another debug Debugging functions (see also undebug) delete Delete a file dir List files on a filesystem disable Turn off privileged commands disconnect Disconnect an existing network connection enable Turn on privileged commands erase Erase a filesystem exit Exit from the EXEC help Description of the interactive help system - More -,路由器在特權(quán)模式下的命令清單,只要輸入部分命令串(唯一表示某個(gè)命令)，緊接著按tab鍵就可以完整地輸入一個(gè)命令,路由器命令行幫助機(jī)制,上下文關(guān)聯(lián)幫助,錯(cuò)誤信息提示,指出所輸入交換機(jī)命令的錯(cuò)誤所在，以便于修改或糾正.,可以重新調(diào)出一個(gè)較長(zhǎng)或較復(fù)雜的命令或其它內(nèi)容，用來(lái)再次運(yùn)行、查看或修改.,之前命令保存區(qū),提供命令清單和與特定命令相關(guān)聯(lián)的參數(shù).,路由器的上下文相關(guān)聯(lián)幫助,Router#,clok,Translating “CLOK“,% Unknown command or computer name, or unable to find computer address,Router#,cl?,clear clock,Router#,clock,% Incomplete command.,Router#,clock ?,set Set the time and date,Router#,clock set,% Incomplete command.,Router#,clock set ?,hh:mm:ss Current Time,符號(hào)解析 命令提示 調(diào)出最近用過(guò)的內(nèi)容,路由器的上下文相關(guān)聯(lián)幫助(續(xù)),Router# clok,Translating “CLOK“,% Unknown command or computer name, or unable to find computer address,Router#,clear clock,Router#,% Incomplete command.,Router#,set Set the time and date,Router#,% Incomplete command.,Router#,hh:mm:ss Current Time,Router#,clock set 19:56:00,% Incomplete command.,Router#,clock set 19:56:00 ?, Day of the month,MONTH Month of the year,Router#,clock set 19:56:00 04 8,% Invalid input detected at the marker,Router#,clock set 19:56:00 04 August,% Incomplete command.,Router#,clock set 19:56:00 04 August ?, Year,命令提示 語(yǔ)法檢查 命令提示,RouterShape the future of internetworking by creating unpreced,使用增強(qiáng)的編輯命令,“Shape the future of internetworking by creating unprecedented value for customers, employees, and partners.” 上述文字段在輸入時(shí)會(huì)超出一行,Router$ future of internetworking by creating unprecedented op,使用增強(qiáng)的編輯命令,(一行中長(zhǎng)字串會(huì)自動(dòng)滾卷).,RouterShape the value of internetworking by creating unpreced,使用增強(qiáng)的編輯命令,(一行中長(zhǎng)字串會(huì)自動(dòng)滾卷).,光標(biāo)移動(dòng)到命令行的開(kāi)始位置.,Router$ value for customers, employees, and partners.,使用增強(qiáng)的編輯命令,(一行中長(zhǎng)字串會(huì)自動(dòng)滾卷).,光標(biāo)移動(dòng)到命令行的開(kāi)始位置.,光標(biāo)移動(dòng)到命令行的結(jié)束位置.,使用增強(qiáng)的編輯命令,(一行中長(zhǎng)字串會(huì)自動(dòng)滾卷).,光標(biāo)移動(dòng)到命令行的開(kāi)始位置.,光標(biāo)移動(dòng)到命令行的結(jié)束位置.,回移一個(gè)單詞,Router$ value for customers, employees, and partners.,使用增強(qiáng)的編輯命令,(一行中長(zhǎng)字串會(huì)自動(dòng)滾卷).,光標(biāo)移動(dòng)到命令行的開(kāi)始位置.,光標(biāo)移動(dòng)到命令行的結(jié)束位置.,回移一個(gè)單詞.,下移一個(gè)字符.,Router$ value for customers, employees, and partners.,使用增強(qiáng)的編輯命令,(一行中長(zhǎng)字串會(huì)自動(dòng)滾卷).,光標(biāo)移動(dòng)到命令行的開(kāi)始位置.,光標(biāo)移動(dòng)到命令行的結(jié)束位置.,回移一個(gè)單詞,下移一個(gè)字符.,回移一個(gè)字符.,Router$ value for customers, employees, and partners.,使用增強(qiáng)的編輯命令,(一行中長(zhǎng)字串會(huì)自動(dòng)滾卷).,光標(biāo)移動(dòng)到命令行的開(kāi)始位置.,光標(biāo)移動(dòng)到命令行的結(jié)束位置.,回移一個(gè)單詞,下移一個(gè)字符.,回移一個(gè)字符.,下移一個(gè)單詞,Router$ value for customers, employees, and partners.,(一行中長(zhǎng)字串會(huì)自動(dòng)滾卷).,光標(biāo)移動(dòng)到命令行的開(kāi)始位置.,光標(biāo)移動(dòng)到命令行的結(jié)束位置.,回移一個(gè)單詞,下移一個(gè)字符.,回移一個(gè)字符.,下移一個(gè)單詞,使用增強(qiáng)的編輯命令,刪除當(dāng)前字符,Router$ value for customers, employees, and partners.,Ctrl-P or Up arrow,調(diào)出最近(前一)使用過(guò)的命令,Ctrl-N or Down arrow,調(diào)出更近使用過(guò)的命令,Router show history,顯示命令保存區(qū)內(nèi)容,Router terminal history size lines,設(shè)置命令保存區(qū)大小,回覽之前用過(guò)的命令,show version 命令,wg_ro_a#show version Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-JS-L), Version 12.0(3), RELEASE SOFTWARE (fc1) Copyright (c) 1986-1999 by cisco Systems, Inc. Compiled Mon 08-Feb-99 18:18 by phanguye Image text-base: 0x03050C84, data-base: 0x00001000 ROM: System Bootstrap, Version 11.0(10c), SOFTWARE BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c), RELEASE SOFTWARE(fc1) wg_ro_a uptime is 20 minutes System restarted by reload System image file is “flash:c2500-js-l_120-3.bin“ (output omitted) -More- Configuration register is 0x2102,查看配置情況,控制臺(tái),IOS,Setup utility,show startup-config,show running-config,將配置參數(shù)保存到NVRAM中,Config,Config,RAM,NVRAM,show running 和 show startup 命令,wg_ro_c#show startup-config Using 1359 out of 32762 bytes ! version 12.0 ! - More -,wg_ro_c#show running-config Building configuration. Current configuration: ! version 12.0 ! - More -,保存在NVRAM中,保存在RAM中,顯示當(dāng)前運(yùn)行的和保存的配置情況,路由器模式一覽,Router(config)#,Routerenable,Router#config term,Exit,Ctrl-Z (end),用戶模式 特權(quán)模式 全局配置模式,配置模式,模式提示,Interface Router(config-if)# Subinterface Router(config-subif)# Controller Router(config-controller)# Line Router(config-line)# Router Router(config-router)# IPX router Router(config-ipx-router)#,保存配置,wg_ro_c# wg_ro_c#copy running-config startup-config Destination filename startup-config? Building configuration wg_ro_c#,將當(dāng)前運(yùn)行的配置復(fù)制到NVRAM中,配置路由器的各種標(biāo)識(shí),為路由器或其端口設(shè)置標(biāo)識(shí)或信息,路由器名,Router(config)#hostname wg_ro_c wg_ro_c(config)#,開(kāi)機(jī)時(shí)的固定顯示信息,wg_ro_c(config)#banner motd # Accounting Department You have entered a secured system. Authorized access only! #,配置路由器的各種標(biāo)識(shí),為路由器或其端口設(shè)置標(biāo)識(shí)或信息,路由器名,Router(config)#hostname wg_ro_c wg_ro_c(config)#,開(kāi)機(jī)時(shí)的固定顯示信息,wg_ro_c(config)#banner motd # Accounting Department You have entered a secured system. Authorized access only! #,端口描述,wg_ro_c(config)#interface ethernet 0 wg_ro_c(config-if)#description Engineering LAN, Bldg. 18,Router(config)#line console 0 Router(config-line)#login Router(config-line)#password cisco,控制臺(tái)密碼,虛擬終端密碼,Router(config)#line vty 0 4 Router(config-line)#login Router(config-line)#password sanjose,路由器密碼配置,Router(config)#line console 0 Router(config-line)#login Router(config-line)#password cisco,控制臺(tái)密碼,虛擬終端密碼,Router(config)#line vty 0 4 Router(config-line)#login Router(config-line)#password sanjose,特權(quán)模式明文密碼,Router(config)#enable password cisco,特權(quán)模式加密密碼,Router(config)#enable secret sanfran,路由器密碼配置,其它控制臺(tái)命令,Router(config)#line console 0 Router(config-line)#exec-timeout 0 0,Router(config)#line console 0 Router(config-line)#logging synchronous,禁止控制臺(tái)會(huì)話自動(dòng)退出,重顯被打亂的控制臺(tái)輸入,Router(config)#interface type number Router(config-if)#,端口配置,type 包括 serial, ethernet, token ring, fddi, hssi, loopback, dialer, null, async, atm, bri, and tunnel number 用來(lái)識(shí)別具體的單個(gè)端口,從當(dāng)前端口配置模式退出,Router(config)#interface type slot/port Router(config-if)#,模塊化端口的表示法,配置串口,進(jìn)入全局配置模式,Router(config)#interface serial 0 Router(config-if)#,Router#configure term Router(config)#,指定某個(gè)端口,配置串口,進(jìn)入全局配置模式,Router(config-if)#clock rate 64000 Router(config-if)#,Router(config)#interface serial 0 Router(config-if)#,Router#configure term Router(config)#,Router(config-if)#bandwidth 64 Router(config-if)#exit Router(config)#exit Router#,指定某個(gè)端口,設(shè)置時(shí)鐘頻率 (只在DCE端),調(diào)協(xié)波特率 (建議),Router#show interface serial 0 Serial0 is up, line protocol is up Hardware is HD64570 Internet address is /24 MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation HDLC, loopback not set, keepalive set (10 sec) Last input 00:00:09, output 00:00:04, output hang never Last clearing of “show interface“ counters never Input queue: 0/75/0 (size/max/drops); Total output drops: 0 Queueing strategy: weighted fair Output queue: 0/1000/64/0 (size/max total/threshold/drops) Conversations 0/1/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec (output omitted),確認(rèn)參數(shù)修改情況,以太網(wǎng)的 media-type 命令,Router(config)#interface ethernet 2 Router(config-if)#media-type 10baset,為以太網(wǎng)端口選擇適當(dāng)?shù)慕橘|(zhì)類型,開(kāi)啟或關(guān)閉端口,Router#configure term Router(config)#interface serial 0 Router(config-if)#no shutdown %LINK-3-UPDOWN: Interface Seria0, changed state to up %LINEPROTO-5-UPDOWN: Line Protocol on Interface Serial0, changed state to up,開(kāi)啟已經(jīng)關(guān)閉的端口,Router#configure term Router(config)#interface serial 0 Router(config-if)#shutdown %LINK-5-CHANGED: Interface Serial0, changed state to administratively down %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to down,人工關(guān)閉端口,路由器的 show interfaces 命令,Router#show interfaces Ethernet0 is up, line protocol is up Hardware is Lance, address is 00e0.1e5d.ae2f (bia 00e0.1e5d.ae2f) Internet address is 1/24 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255 Encapsulation ARPA, loopback not set, keepalive set (10 sec) ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:07, output 00:00:08, output hang never Last clearing of “show interface“ counters never Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 81833 packets input, 27556491 bytes, 0 no buffer Received 42308 broadcasts, 0 runts,