chp路由優(yōu)化被動(dòng)接口和分布列表

1、1路由優(yōu)化路由優(yōu)化 Route Optimization 深圳職業(yè)技術(shù)學(xué)院電子與通信工程學(xué)院深圳職業(yè)技術(shù)學(xué)院電子與通信工程學(xué)院2教學(xué)目標(biāo)（教學(xué)目標(biāo)（ Objectives ）1. 被動(dòng)接口（被動(dòng)接口（Passive Interface）2.分布列表（分布列表（ Distribute List ）3.前綴列表（前綴列表（ Prefix List）4.偏移列表（偏移列表（Offset List）3第一節(jié)第一節(jié) 被動(dòng)接口和分布列表被動(dòng)接口和分布列表4控制路由更新（控制路由更新（Controlling Routing Updates）lPassive interfacelStatic routeslD

2、efault routelRoute mapslDistribute listslPrefix lists5被動(dòng)接口（被動(dòng)接口（Passive Interfaces） 對(duì)于特定的協(xié)議，被動(dòng)接口阻止發(fā)送或者接收路由更新對(duì)于特定的協(xié)議，被動(dòng)接口阻止發(fā)送或者接收路由更新 Passive interfaces prevent routing updates from being sent and/or received for a specified protocol. RIP可以接收更新，但是不能發(fā)送更新可以接收更新，但是不能發(fā)送更新 RIP interfaces listen but will n

3、ot send updates. OSPF和和EIGRP不接受也不發(fā)送更新，因而不能形成鄰居關(guān)系不接受也不發(fā)送更新，因而不能形成鄰居關(guān)系 OSPF and EIGRP interfaces do not listen for or send updates and therefore no neighbor adjacencies can be established.6passive-interface default Command 大的企業(yè)可能配置多個(gè)被動(dòng)接口，在一些網(wǎng)絡(luò)中，可能要使用大的企業(yè)可能配置多個(gè)被動(dòng)接口，在一些網(wǎng)絡(luò)中，可能要使用200多次多次passive-interface命

4、令。 Large enterprise may need to set multiple interfaces as passive.In some networks, this could mean coding 200 or more passive-interface statements. passive-interface default命令把參與相應(yīng)路由協(xié)議的所有接口命令把參與相應(yīng)路由協(xié)議的所有接口配置為被動(dòng)接口。配置為被動(dòng)接口。 The passive-interface default command sets all interfaces as passive by defa

5、ult. 需要參與路由更新的接口通過命令需要參與路由更新的接口通過命令passive-interface default 激激活。活。 Interfaces on which adjacencies updates are desired can be set as active with the passive-interface default command.7使用使用passive-interface命令命令（Using the passive-interface Command）8使用分布列表（使用分布列表（Using Distribute Lists） 分布列表允許分布列表允許AC

6、L應(yīng)用到路由更新中，達(dá)到過濾的目的應(yīng)用到路由更新中，達(dá)到過濾的目的 Distribute list allows an ACL to be applied to routing updates for filtering purposes.9過濾入向更新（過濾入向更新（Filter Incoming Routing Updates）Router(config-router)#distribute-list access-list-number | name route-map map-tag in interface-type interface-numberParameterDescript

7、ionaccess-list-number | nameSpecifies the standard access list number or name.map-tag(Optional) Specifies the name of the route map that defines which networks are to be installed in the routing table and which are to be filtered from the routing table. This argument is supported by OSPF only.inAppl

8、ies the access list to incoming routing erface-type interface-number(Optional) Specifies the interface type and number from which updates are filtered.10過濾出向更新（過濾出向更新（Filter Outgoing Routing Updates）Router(config-router)#distribute-list access-list-number | name out interface-name | routi

9、ng-process routing-process parameter ParameterDescriptionaccess-list-number | nameSpecifies the standard access list number or name.outApplies the access list to outgoing routing erface-name(Optional) Specifies the name of the interface out of which updates are filtered. routing-process(O

10、ptional) Specifies the name of the routing process, or the keyword static or connected, that is being redistributed and from which updates are filtered.routing-process parameter(Optional) Specifies a routing process parameter, such as the AS number of the routing process.11distribute-list out Or inFilter outgoing routing updatesR1(config-router)# distribute-list 1 outFilter incoming routing updatesR1R1R1(config-router)# distribute-list 2 in12 使用接口過濾，隱藏了網(wǎng)絡(luò)使用接口過濾，隱藏了網(wǎng)絡(luò)用分布列表過濾路由更新用分布列表過濾路由更新（Filtering Routing Updates Using Distribute List）13Case Study 1：配置被動(dòng)接口和分布列表：配置被動(dòng)接口和分布列表1.R11.R