




版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
1、 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-1Ethernet Frame Structure 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-2Building a Simple NetworkUnderstanding the TCP/IP Internet Layer 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-3Internet Protocol Characteristics O
2、perates at network layer of OSI Connectionless protocol Packets treated independently Hierarchical addressing Best-effort delivery No data-recovery features 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-4Why IP Addresses? They uniquely identify each device on an IP network. Every host (co
3、mputer, networking device, peripheral) must have a unique address. Host ID: Identifies the individual host Is assigned by organizations to individual devicesNetwork.Host 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-5IP PDU Header 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-6
4、IP Address Format: Dotted Decimal NotationThe binary-to-decimal and decimal-to-binary conversion will be detailed later in this course. 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-7IP Address Classes: The First Octet 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-8IP Address R
5、anges*127 (01111111) is a Class A address reserved for loopback testing and cannot be assigned to a network. 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-9Reserved Address 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-10Public IP Addresses 2007 Cisco Systems, Inc. All rights r
6、eserved.ICND1 v1.01-11Private IP AddressesClassPrivate Address RangeA10.0.0.0 to 10.255.255.255B172.16.0.0 to 172.31.255.255C192.168.0.0 to 192.168.255.255 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-12特殊地址特殊地址 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-13DHCP 2007 Cisco S
7、ystems, Inc. All rights reserved.ICND1 v1.01-14Network Connection 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-15 IP network addresses consist of two parts: the network ID and the host ID. IPv4 addresses have 32 bits that are divided into octets and are generally shown in dotted decimal
8、form (for example, 192.168.54.18). When written in a binary format, the first bit of a Class A address is always 0, the first 2 bits of a Class B address are always 10, and the first 3 bits of a Class C address are always 110.Summary 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-16 Certai
9、n IP addresses (network and broadcast) are reserved and cannot be assigned to individual network devices. Internet hosts require a unique, public IP address, but private hosts can have any valid private address that is unique within the private network. DHCP is used to assign IP addresses automatica
10、lly, and also to set TCP/IP stack configuration parameters such as the subnet mask, default router, and DNS servers. DNS is an application that is specified in the TCP/IP suite, providing a means to translate human-readable names into IP addresses.Summary (Cont.) 2007 Cisco Systems, Inc. All rights reserved.ICND1 v1.01-17 Host provides tool
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 教育类读书分享
- 2025年计算机服务项目规划申请报告模板
- 2025年蚌埠淮上区区属国有企业招聘考试笔试试题(含答案)
- 【锦州】2025年辽宁锦州义县事业单位面向社会公开招聘工作人员15人笔试历年典型考题及考点剖析附带答案详解
- 文库发布:中医护理
- 书包劳动与技术课件
- 整体护理教程课件教学
- 【课件】角的平分线+第1课时+++课件-2025-2026学年+人教版2024八年级数学上册
- 魏姗姗四季之美教学课件
- 教育课件背景图
- 2024-2025学年下学期高一数学人教A版期末必刷常考题之频率与概率
- 口腔诊所前台主管述职报告
- 2024年广东“三支一扶”计划招募笔试真题
- 2025-2030中国铝业发展状况与投资战略研究报告
- 设备租赁方案(3篇)
- 公关费用标准管理制度
- 2025-2030年中国洁净室风扇过滤单元行业市场现状供需分析及投资评估规划分析研究报告
- AI大模型赋能数字农业农村数字乡村建设方案
- 防汛物资储备定额编制规程(SL298-2024)
- 综合实践:画数学连环画(大单元教学设计)一年级数学下册北师大版2025
- 2025年大学英语六级考试试卷及答案
评论
0/150
提交评论