【工程实验室】【IPv6默认态路由】
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实验六 IPv6默认态路由【实验名称】基于IPv6的默认路由【实验目的】掌握在IPv6环境下通过默认路由的设置实现不同网段的通讯【背景描述】ST网络公司技术工程师小王在江苏三江源大学IPv6试验网测试中,配合校方成功完成基于IPv6的静态路由测试工作。
由于考虑到随着IPv6网络的不断发展,IPv6站点也将不断增多,站点的增多必将带来路由信息的增多,如何能够高效并且简单明了的解决用户访问多个IPv6站点的需求呢?小王建议进行基于IPv6的默认路由的测试。
【需求分析】需求:高效并且简单明了的解决用户访问多个IPv6站点。
分析:采用静态路由可以提高网络带宽的利用率,当出现需要手工维护的路由信息条目数较多的情况时,势必会造成管理员工作量大增;如果利用动态路由协议的确可以起到动态维护网络的效果,但整个协议运行在网络中是要占用一定网络资源的,考虑到沿承静态路由测试的结构,而且用户一般都处在网络的末端,所以可以采用默认路由的方式来解决问题,这样将所有数据的转发交给默认网关,由网关来决定数据包下一步的走向。
配置默认路由不论数据包访问哪些地址,只需配置一条路由信息即可。
【实验拓扑】如图1-20所示网络拓扑,通过在交换机上配置IPv6地址,掌握在IPv6环境下通过默认路由的设置实现不同网段的通讯。
图1-20 默认路由的设置实现不同网段的通讯【实验设备】双协议栈交换机 2台 IPv6 PC 2台 双绞线 3条【预备知识】IPv6静态路由【实验步骤】第一步:在S3760_1上配置接口的IP地址。
S3760_1(config)int fa 0/1S3760_1(config-if)#no switchportS3760_1(config-if)#ipv6 add 5::1/64S3760_1(config-if)#ipv6 enableS3760_1(config-if)#no shutdownS3760_1(config-if)#exitS3760_1(config)#int fa 0/48S3760_1(config-if)#no switchportS3760_1(config-if)#ipv6 add 1::1/64S3760_1(config-if)#ipv6 enableS3760_1(config-if)#no shutdownS3760_1(config-if)#no ipv6 nd suppress-raS3760_1(config-if)#exit验证交换机接口配置:S3760_1#sh ipv6 interfacesinterface FastEthernet 0/1 is Up, ifindex: 1address(es):Mac Address: 00:d0:f8:c1:b3:e3INET6: 5::1 , subnet is 5::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ff00:1INET6: fe80::2d0:f8ff:fec1:b3e3 , subnet is fe80::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ffc1:b3e3MTU is 1500 bytesICMP error messages limited to one every 100 millisecondsICMP redirects are enabledND DAD is enabled, number of DAD attempts: 1ND reachable time is 30000 millisecondsND advertised reachable time is 0 millisecondsND retransmit interval is 1000 millisecondsND advertised retransmit interval is 0 millisecondsND router advertisements are sent every 200 seconds<240--160>ND router advertisements live for 1800 secondsinterface FastEthernet 0/48 is Up, ifindex: 48address(es):Mac Address: 00:d0:f8:c1:b3:e4INET6: 1::1 , subnet is 1::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ff00:1INET6: fe80::2d0:f8ff:fec1:b3e4 , subnet is fe80::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ffc1:b3e4MTU is 1500 bytesICMP error messages limited to one every 100 millisecondsICMP redirects are enabledND DAD is enabled, number of DAD attempts: 1ND reachable time is 30000 millis第二步:在交换机S3760_1上配置默认路由。
S3760_1(config)#ipv6 route ::/0 fa 0/1 5::2 !配置默认路由S3760_1(config)#end验证测试:查看S3760_1上的默认路由配置S3760_1#sh ipv6 routeCodes: C - Connected, L - Local, S - Static, R - RIPO - OSPF intra area, IA - OSPF inter areaN1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2[*] - the route not add to hardware for hardware table fullS ::/0via ::, FastEthernet 0/1L ::1/128via ::1, LoopbackC 1::/64via ::, FastEthernet 0/48L 1::1/128via ::, LoopbackC 5::/64via ::, FastEthernet 0/1L 5::1/128via ::, LoopbackL fe80::/10via ::1, Null0C fe80::/64via ::, FastEthernet 0/1L fe80::2d0:f8ff:fec1:b3e3/128via ::, LoopbackC fe80::/64via ::, FastEthernet 0/48L fe80::2d0:f8ff:fec1:b3e4/128via ::, Loopback第三步:配置交换机S3760_2接口地址。
S3760_2(config)interface fa 0/1S3760_2(config-if)#no switchportS3760_2(config-if)#ipv6 add 5::2/64S3760_2(config-if)#ipv6 enableS3760_2(config-if)#no shutdownS3760_2(config-if)#exitS3760_2(config)#interface fa 0/48S3760_2(config-if)#no switchportS3760_2(config-if)#ipv6 add 2::1/64S3760_2(config-if)#ipv6 enableS3760_2(config-if)#no ipv6 nd suppress-raS3760_2(config-if)#no shS3760_2(config-if)#exit验证测试:查看接口状态S3760_2#show ipv6 interfacesinterface Vlan 1 is Down, ifindex: 2001address(es):Mac Address: 00:d0:f8:ff:bd:42INET6: fec0:0:0:1::1 , subnet is fec0:0:0:1::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ff00:1INET6: fe80::2d0:f8ff:feff:bd42 , subnet is fe80::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ffff:bd42MTU is 1500 bytesICMP error messages limited to one every 100 millisecondsICMP redirects are enabledND DAD is enabled, number of DAD attempts: 1ND reachable time is 30000 millisecondsND advertised reachable time is 0 millisecondsND retransmit interval is 1000 millisecondsND advertised retransmit interval is 0 millisecondsND router advertisements are sent every 200 seconds<240--160> ND router advertisements live for 1800 secondsinterface FastEthernet 0/1 is Up, ifindex: 1address(es):Mac Address: 00:d0:f8:ff:bd:43INET6: 5::2 , subnet is 5::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ff00:2INET6: fe80::2d0:f8ff:feff:bd43 , subnet is fe80::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ffff:bd43MTU is 1500 bytesICMP error messages limited to one every 100 millisecondsICMP redirects are enabledND DAD is enabled, number of DAD attempts: 1ND reachable time is 30000 millisecondsND advertised reachable time is 0 millisecondsND retransmit interval is 1000 millisecondsND advertised retransmit interval is 0 millisecondsND router advertisements are sent every 200 seconds<240--160> ND router advertisements live for 1800 secondsinterface FastEthernet 0/48 is Up, ifindex: 48address(es):Mac Address: 00:d0:f8:ff:bd:44INET6: 2::1 , subnet is 2::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ff00:1INET6: fe80::2d0:f8ff:feff:bd44 , subnet is fe80::/64Joined group address(es):ff02::2ff01::1ff02::1ff02::1:ffff:bd44MTU is 1500 bytesICMP error messages limited to one every 100 millisecondsICMP redirects are enabledND DAD is enabled, number of DAD attempts: 1ND reachable time is 30000 millisecondsND advertised reachable time is 0 millisecondsND retransmit interval is 1000 millisecondsND advertised retransmit interval is 0 millisecondsND router advertisements are sent every 200 seconds<240--160>ND router advertisements live for 1800 seconds第四步:配置S3760_2的默认路由。