ccnp实验手册BGP.docx

ccnp实验手册BGP.docx

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ccnp实验手册BGP

BGP的实验

以internet为例,搭建四个自治系统,环型连接.

第一步:

为了方便实验,首先进行初始配置.

Router>en（进入特权模式）

Router#configureterminal（进入全局配置模式）

Enterconfigurationcommands,oneperline.EndwithCNTL/Z.

Router（config）#hostnameR1（指定主机名）

r1（config）#noipdomain-lookup（关掉域名解析）

r1（config）#linecon0（进入con线路的配置模式）

r1（config-line）#noexec-timeout（关闭发呆超时）

r1（config-line）#loggingsynchronous（打开日志同步）

第二步

hostnameAS1_R1

!

interfaceLoopback0

ipaddress1.1.1.1255.255.255.0

ipospfnetworkpoint-to-point

!

interfaceFastEthernet0/0

ipaddress11.1.13.1255.255.255.0

!

interfaceSerial1/1

ipaddress10.1.12.1255.255.255.0

hostnameAS1_R2

!

interfaceLoopback0

ipaddress1.1.2.2255.255.255.0

ipospfnetworkpoint-to-point

!

interfaceLoopback1

ipaddress1.2.2.2255.255.255.0

!

interfaceSerial1/0

ipaddress10.1.12.2255.255.255.0

!

interfaceSerial1/1

ipaddress10.1.23.2255.255.255.0

hostnameAS1_R3

!

interfaceLoopback0

ipaddress1.1.3.3255.255.255.0

ipospfnetworkpoint-to-point

!

interfaceFastEthernet0/0

ipaddress11.1.12.1255.255.255.0

!

interfaceSerial1/0

ipaddress10.1.23.3255.255.255.0

hostnameAS2_R1

!

interfaceLoopback0

ipaddress2.1.1.1255.255.255.0

!

interfaceFastEthernet0/0

ipaddress11.1.12.2255.255.255.0

!

interfaceSerial1/1

ipaddress10.2.12.1255.255.255.0

hostnameAS2_R2

!

interfaceLoopback0

ipaddress2.1.2.2255.255.255.0

!

interfaceSerial1/0

ipaddress10.2.12.2255.255.255.0

!

interfaceSerial1/1

ipaddress10.2.23.2255.255.255.0

!

interfaceSerial1/2

ipaddress10.2.23.2255.255.255.00

hostnameAS2_R3

!

interfaceLoopback0

ipaddress2.1.3.3255.255.255.0

!

interfaceFastEthernet0/0

ipaddress11.1.24.2255.255.255.0

!

interfaceSerial1/0

ipaddress10.2.23.3255.255.255.0

hostnameAS3_R1

!

interfaceLoopback0

ipaddress3.1.1.1255.255.255.0

ipospfnetworkpoint-to-point

!

interfaceFastEthernet0/0

ipaddress11.1.13.3255.255.255.0

!

interfaceSerial1/1

ipaddress10.3.12.1255.255.255.0

hostnameAS3_R2

!

interfaceLoopback0

ipaddress3.1.2.2255.255.255.0

ipospfnetworkpoint-to-point

!

interfaceLoopback1

ipaddress3.2.2.2255.255.255.0

!

interfaceSerial1/0

ipaddress10.3.12.2255.255.255.0

!

interfaceSerial1/1

ipaddress10.3.23.2255.255.255.0

hostnameAS3_R3

!

interfaceLoopback0

ipaddress3.1.3.3255.255.255.0

ipospfnetworkpoint-to-point

!

interfaceFastEthernet0/0

ipaddress11.1.34.3255.255.255.0

!

interfaceSerial1/0

ipaddress10.3.23.3255.255.255.0

hostnameAS4_R1

interfaceLoopback0

ipaddress4.1.1.1255.255.255.0

!

interfaceFastEthernet0/0

ipaddress11.1.34.4255.255.255.0

!

interfaceSerial1/1

ipaddress10.4.12.1255.255.255.0

hostnameAS_R2

!

interfaceLoopback0

ipaddress4.1.2.1255.255.255.0

!

interfaceLoopback1

ipaddress4.1.5.5255.255.255.0

!

interfaceSerial1/0

ipaddress10.4.12.2255.255.255.0

!

interfaceSerial1/1

ipaddress10.4.23.2255.255.255.0

hostnameAS4_R3

!

interfaceLoopback0

ipaddress4.1.3.1255.255.255.0

!

interfaceFastEthernet0/0

ipaddress11.1.24.4255.255.255.0

!

interfaceSerial1/0

ipaddress10.4.23.3255.255.255.0

第二步:

配置IGP

hostnameAS1R1

!

routerospf1

redistributeconnectedsubnets

network1.1.1.00.0.0.255area0

network10.1.12.00.0.0.255area0

hostnameAS1R2

!

routerospf1

network1.1.2.00.0.0.255area0

network10.1.12.00.0.0.255area0

network10.1.23.00.0.0.255area0

hostnameAS1R3

!

routerospf1

redistributeconnectedsubnets

network1.1.3.00.0.0.255area0

network10.1.23.00.0.0.255area0

hostnameAS2_R1

!

routerospf1

redistributeconnectedsubnets

network2.1.1.00.0.0.255area0

network10.2.12.00.0.0.255area0

hostnameAS2_R2

!

routerospf1

network2.1.2.00.0.0.255area0

network10.2.12.00.0.0.255area0

network10.2.23.00.0.0.255area0

hostnameAS2_R3

!

routerospf1

redistributeconnectedsubnets

network2.1.3.00.0.0.255area0

network10.2.23.00.0.0.255area0

hostnameAS3_R1

!

routerospf1

redistributeconnectedsubnets

network3.1.1.00.0.0.255area0

network10.3.12.00.0.0.255area0

hostnameAS3_R2

!

routerospf1

network3.1.2.00.0.0.255area0

network10.3.12.00.0.0.255area0

network10.3.23.00.0.0.255area0

hostnameAS3_R3

!

routerospf1

redistributeconnectedsubnets

network3.1.3.00.0.0.255area0

network10.3.23.00.0.0.255area0

hostnameAS4_R1

!

routerospf1

redistributeconnectedsubnets

network4.1.1.00.0.0.255area0

network10.4.12.00.0.0.255area0

hostnameAS4_R2

!

routerospf1

network4.1.2.00.0.0.255area0

network10.4.12.00.0.0.255area0

network10.4.23.00.0.0.255area0

hostnameAS4_R3

!

routerospf1

redistributeconnectedsubnets

network4.1.3.00.0.0.255area0

network10.4.23.00.0.0.255area0

第三步:

配置BGP

hostnameAS1R1

!

routerbgp1

nosynchronization

network4.1.1.0mask255.255.255.0（通过路由）

neighbor1.1.2.2remote-as1（指定IBGP邻居）

neighbor1.1.2.2update-sourceLoopback0（指定邻居更新源）

neighbor11.1.13.3remote-as3（指定EBGP邻居）

noauto-summary

hostnameAS1R2

!

routerbgp1

nosynchronization

network1.2.2.0mask255.255.255.0

neighbor1.1.1.1remote-as1

neighbor1.1.1.1update-sourceLoopback0

neighbor1.1.1.1route-reflector-client（启动路由反射器）

neighbor1.1.3.3remote-as1

neighbor1.1.3.3update-sourceLoopback0

neighbor1.1.3.3route-reflector-client

noauto-summary

hostnameAS1R3

!

routerbgp1

nosynchronization

neighbor1.1.2.2remote-as1

neighbor1.1.2.2update-sourceLoopback0

neighbor11.1.12.2remote-as2

noauto-summary

hostnameAS2_R1

!

routerbgp2

nosynchronization

neighbor2.1.2.2remote-as2

neighbor2.1.2.2update-sourceLoopback0

neighbor11.1.12.1remote-as1

noauto-summary

hostnameAS2_R2

!

routerbgp2

nosynchronization

neighbor2.1.1.1remote-as2

neighbor2.1.1.1update-sourceLoopback0

neighbor2.1.1.1route-reflector-client

neighbor2.1.3.3remote-as2

neighbor2.1.3.3update-sourceLoopback0

neighbor2.1.3.3route-reflector-client

noauto-summary

hostnameAS2_R3

!

routerbgp2

nosynchronization

neighbor2.1.2.2remote-as2

neighbor2.1.2.2update-sourceLoopback0

neighbor11.1.24.4remote-as4

noauto-summary

!

hostnameAS3_R1

!

routerbgp3

nosynchronization

neighbor3.1.2.2remote-as3

neighbor3.1.2.2update-sourceLoopback0

neighbor11.1.13.1remote-as1

noauto-summary

hostnameAS3_R2

!

routerbgp3

nosynchronization

network3.2.2.0mask255.255.255.0

neighbor3.1.1.1remote-as3

neighbor3.1.1.1update-sourceLoopback0

neighbor3.1.1.1route-reflector-client

neighbor3.1.3.3remote-as3

neighbor3.1.3.3update-sourceLoopback0

neighbor3.1.3.3route-reflector-client

noauto-summary

!

hostnameAS3_R3

!

routerbgp3

nosynchronization

neighbor3.1.2.2remote-as3

neighbor3.1.2.2update-sourceLoopback0

neighbor11.1.34.4remote-as4

noauto-summary

hostnameAS4_R1

!

routerbgp4

nosynchronization

neighbor4.1.3.1remote-as4

neighbor4.1.3.1update-sourceLoopback0

neighbor11.1.34.3remote-as3

noauto-summary

hostnameAS_R2

!

routerbgp4

nosynchronization

network4.1.5.0mask255.255.255.0

neighbor4.1.1.1remote-as4

neighbor4.1.1.1update-sourceLoopback0

neighbor4.1.1.1route-reflector-client

neighbor4.1.3.1remote-as4

neighbor4.1.3.1update-sourceLoopback0

neighbor4.1.3.1route-reflector-client

noauto-summary

hostnameAS4_R3

!

routerbgp4

nosynchronization

neighbor11.1.24.2remote-as2

neighbor4.1.1.1update-sourceLoopback0

noauto-summary

修改本地优先权

access-list1permit4.1.2.00.0.0.255

!

route-mapbgppermit10

matchipaddress1

setlocal-preference400

!

route-mapbgppermit20