seo教程网站优化推广排名,做a免费网站,工作室网站制作,wordpress 遍历分类CCNP-19 IS-IS试验2 实验拓扑#xff1a;试验要求#xff1a;R1 R2 R3全部采用集成的ISIS路由协议#xff0c;R1 R2在区域49.0001内#xff0c;R3在区域49.0002内#xff0c;R1与R2之间的链路类型为L1#xff0c;R2与R3之间的链路类型为L2。 试验目的#xff1a;掌握基… CCNP-19 IS-IS试验2 实验拓扑 试验要求R1 R2 R3全部采用集成的ISIS路由协议R1 R2在区域49.0001内R3在区域49.0002内R1与R2之间的链路类型为L1R2与R3之间的链路类型为L2。 试验目的掌握基本的集成ISIS配置 实验配置 R1 R1(config)#router isis R1(config-router)#net 49.0001.1111.1111.1111.00 R1(config-router)#is-type level-1 R1(config-router)#exit R1(config)#int loop0 R1(config-if)#ip add 1.1.1.1 255.255.255.0 R1(config-if)#ip router isis R1(config-if)#exit R1(config)#int loop1 R1(config-if)#ip add 2.2.2.2 255.255.255.0 R1(config-if)#ip router isis R1(config-if)#exit R1(config)#int f0/0 R1(config-if)#ip add 199.99.1.1 255.255.255.0 R1(config-if)#ip router isis R1(config-if)#no shu R1(config-if)#exit R2 R2(config)#router isis R2(config-router)#net 49.0001.2222.2222.2222.00 R2(config-router)#exit R2(config)#int loop0 R2(config-if)#ip add 3.3.3.3 255.255.255.0 R2(config-if)#ip router isis R2(config-if)#exit R2(config)#int loop1 R2(config-if)#ip add 4.4.4.4 255.255.255.0 R2(config-if)#ip router isis R2(config-if)#exit R2(config)#int f0/0 R2(config-if)#ip add 199.99.1.2 255.255.255.0 R2(config-if)#ip router isis R2(config-if)#isis circuit-type level-1 R2(config-if)#no shu R2(config-if)#exit R2(config)#int s1/0 R2(config-if)#ip add 199.99.2.1 255.255.255.0 R2(config-if)#ip router isis R2(config-if)#isis circuit-type level-2-only R2(config-if)#clock rate 64000 R2(config-if)#no shu R2(config-if)#exit R3 R3(config)#router isis R3(config-router)#net 49.0002.3333.3333.3333.00 R3(config-router)#is-type level-2-only R3(config-router)#exit R3(config)#int loop0 R3(config-if)#ip add 5.5.5.5 255.255.255.0 R3(config-if)#ip router isis R3(config-if)#exit R3(config)#int loop1 R3(config-if)#ip add 6.6.6.6 255.255.255.0 R3(config-if)#ip router isis R3(config-if)#exit R3(config)#int s1/0 R3(config-if)#ip add 199.99.2.2 255.255.255.0 R3(config-if)#ip router isis R3(config-if)#no shu R3(config-if)#exit 以上为基本的集成ISIS的配置起Loop接口做测试注意有一点需要提出的是在上次试验中我既在ISIS配置模式下配置了路由器的level又在接口模式下配置了circuit-type的level今天又一次看ISIS的时候发现其实这两条命令之需要一条就可以了。OK下面查看一下邻居关系 Router#show clns is-neighbors System Id Interface State Type Priority Circuit Id Format R2 Fa0/0 Up L1 64 R2.03 Phase V R2#show clns is-neighbors System Id Interface State Type Priority Circuit Id Format R1 Fa0/0 Up L1 64 R2.03 Phase V R3 Se1/0 Up L2 0 00 Phase V R3#show clns is-neighbors System Id Interface State Type Priority Circuit Id Format R2 Se1/0 Up L2 0 00 Phase V 邻居关系状态都UP了表示成功建立了ISIS的邻居关系R2.03表示在LAN环境下R2为DIS。然后我们查看一下show ip protocols R1#show ip protocols Routing Protocol is isis Invalid after 0 seconds, hold down 0, flushed after 0 Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Redistributing: isis Address Summarization: None Maximum path: 4 Routing for Networks: Loopback0 Loopback1 FastEthernet0/0 Routing Information Sources: Gateway Distance Last Update 3.3.3.3 115 00:00:39 Distance: (default is 115) R2#show ip protocols Routing Protocol is isis Invalid after 0 seconds, hold down 0, flushed after 0 Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Redistributing: isis Address Summarization: None Maximum path: 4 Routing for Networks: Loopback0 Loopback1 FastEthernet0/0 Serial1/0 Routing Information Sources: Gateway Distance Last Update 5.5.5.5 115 00:00:11 1.1.1.1 115 00:00:06 Distance: (default is 115) R3#show ip protocols Routing Protocol is isis Invalid after 0 seconds, hold down 0, flushed after 0 Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Redistributing: isis Address Summarization: None Maximum path: 4 Routing for Networks: Loopback0 Loopback1 Serial1/0 Routing Information Sources: Gateway Distance Last Update 3.3.3.3 115 00:00:11 Distance: (default is 115) 从上面的信息可以看到集成ISIS的一些信息注意Gateway显示的是loopback0的地址ISIS的管理距离为115为什么会选用这个地址会不会像OSPF选取router-id一样呢我们做一下测试 R3(config)#int loop2 R3(config-if)#ip add 1.1.2.1 255.255.255.0 R3(config-if)#ip router isis R3(config-if)#end 在R3上再起一个loopback接口IP地址要小于loopback0的IP地址然后在R2上clear isis *后在show ip procols查看 R2#show ip protocols Routing Protocol is isis Invalid after 0 seconds, hold down 0, flushed after 0 Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Redistributing: isis Address Summarization: None Maximum path: 4 Routing for Networks: Loopback0 Loopback1 FastEthernet0/0 Serial1/0 Routing Information Sources: Gateway Distance Last Update 5.5.5.5 115 00:00:00 1.1.1.1 115 00:00:22 Distance: (default is 115) 没有任何变化好的下面我们把R3的loopback0接口地址做一下修改 R3(config)#int loop0 R3(config-if)#ip add 1.1.3.1 255.255.255.0 R3(config-if)#end 这回再到R2上show ip procols时会发现变化 R2#show ip protocols Routing Protocol is isis Invalid after 0 seconds, hold down 0, flushed after 0 Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Redistributing: isis Address Summarization: None Maximum path: 4 Routing for Networks: Loopback0 Loopback1 FastEthernet0/0 Serial1/0 Routing Information Sources: Gateway Distance Last Update 5.5.5.5 115 00:00:28 1.1.1.1 115 00:00:02 1.1.3.1 115 00:00:02 Distance: (default is 115) 多了一个1.1.3.1的地址表示采用了新的R3 Loopback0接口地址5.5.5.5的地址还在并没有消除等邻居计时器超时后就会消除的。由此我们可以判断出这里显示的地址为相邻路由器loopback0口的IP地址。 下面我们来查看一下LSDB R1#show isis database IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R1.00-00 * 0x00000004 0x0170 1086 0/0/0 R2.00-00 0x00000007 0x9E4A 1114 1/0/0 R2.03-00 0x00000001 0x183C 1040 0/0/0 R2#show isis database IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R1.00-00 0x00000004 0x0170 1162 0/0/0 R2.00-00 * 0x00000007 0x9E4A 1195 1/0/0 R2.03-00 * 0x00000001 0x183C 1120 0/0/0 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R2.00-00 * 0x0000000A 0x43B5 1189 0/0/0 R3.00-00 0x00000002 0x2F4C 1187 0/0/0 R3#show isis database IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R2.00-00 0x0000000A 0x43B5 1189 0/0/0 R3.00-00 * 0x00000002 0x2F4C 1191 0/0/0 这里可以看到在LAN环境下R2后面的ATT为1,表示它为一个边界路由器R2.03-00表示R2为DIS。最后我们来查看一下路由表 R1#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is 199.99.1.2 to network 0.0.0.0 1.0.0.0/24 is subnetted, 1 subnets C 1.1.1.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnets C 2.2.2.0 is directly connected, Loopback1 3.0.0.0/24 is subnetted, 1 subnets i L1 3.3.3.0 [115/20] via 199.99.1.2, FastEthernet0/0 4.0.0.0/24 is subnetted, 1 subnets i L1 4.4.4.0 [115/20] via 199.99.1.2, FastEthernet0/0 C 199.99.1.0/24 is directly connected, FastEthernet0/0 i*L1 0.0.0.0/0 [115/10] via 199.99.1.2, FastEthernet0/0 R2#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is not set 1.0.0.0/24 is subnetted, 3 subnets i L1 1.1.1.0 [115/20] via 199.99.1.1, FastEthernet0/0 i L2 1.1.2.0 [115/20] via 199.99.2.2, Serial1/0 i L2 1.1.3.0 [115/20] via 199.99.2.2, Serial1/0 2.0.0.0/24 is subnetted, 1 subnets i L1 2.2.2.0 [115/20] via 199.99.1.1, FastEthernet0/0 3.0.0.0/24 is subnetted, 1 subnets C 3.3.3.0 is directly connected, Loopback0 4.0.0.0/24 is subnetted, 1 subnets C 4.4.4.0 is directly connected, Loopback1 6.0.0.0/24 is subnetted, 1 subnets i L2 6.6.6.0 [115/20] via 199.99.2.2, Serial1/0 C 199.99.2.0/24 is directly connected, Serial1/0 C 199.99.1.0/24 is directly connected, FastEthernet0/0 R3#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is not set 1.0.0.0/24 is subnetted, 3 subnets i L2 1.1.1.0 [115/30] via 199.99.2.1, Serial1/0 C 1.1.2.0 is directly connected, Loopback2 C 1.1.3.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnets i L2 2.2.2.0 [115/30] via 199.99.2.1, Serial1/0 3.0.0.0/24 is subnetted, 1 subnets i L2 3.3.3.0 [115/20] via 199.99.2.1, Serial1/0 4.0.0.0/24 is subnetted, 1 subnets i L2 4.4.4.0 [115/20] via 199.99.2.1, Serial1/0 6.0.0.0/24 is subnetted, 1 subnets C 6.6.6.0 is directly connected, Loopback1 C 199.99.2.0/24 is directly connected, Serial1/0 i L2 199.99.1.0/24 [115/20] via 199.99.2.1, Serial1/0 上面用红颜色标记的部分表示都是通过ISIS学习到的I L1表示的是LEVEL-1路由I L2表示的是LEVEL-2的路由I*L1表示的是缺省路由下面在R1上ping测试一下 R1#ping 199.99.2.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 199.99.2.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max 168/191/216 ms 通了。 实验总结掌握基本的集成ISIS配置方法并会使用show命令对集成ISIS的配置进行检验。 本文转自loveme2351CTO博客原文链接http://blog.51cto.com/loveme23/47989 如需转载请自行联系原作者
