【技术分享】思科设备ISIS配置
2024-04-26 18:32:07
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https://mp.weixin.qq.com/s/qHyXvs0MUi-TQudj8iybSQ
实验目的
掌握ISIS的基本配置
掌握常用的ISIS检查命令
实验拓扑
实验需求
根据实验拓扑图，完成设备的基本配置；
在R1、R2、R3上分别启用ISIS，并激活相应的接口；
实验步骤
1、设备基本配置
配置R1：
hostname R1
interface Eth0/0ip address 12.1.1.1 255.255.255.0no shut
interface Ser1/0ip address 13.1.1.1 255.255.255.0no shut
interface Loop0ip address 1.1.1.1 255.255.255.255
配置R2:
hostname R2
interface Eth0/0ip address 12.1.1.2 255.255.255.0no shut
interface Loop0ip address 2.2.2.2 255.255.255.255
配置R3：
hostname R3
interface Ser1/0ip address 13.1.1.3 255.255.255.0no shut
interface Loop0ip address 3.3.3.3 255.255.255.255
2、测试直连链路连通性
R1#ping 12.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 12.1.1.1, timeout is 2 seconds:
.!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/7/8 msR1#ping 13.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 13.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 25/30/32 ms
3、配置ISIS
配置R1：
R1(config)#router isis
R1(config-router)#log-adjacency-changes
R1(config-router)#net 49.0001.1111.1111.1111.00
R1(config-router)#exit
R1(config)#interface Eth0/0
R1(config-if)#ip router isis
R1(config-if)#exit
R1(config)#interface Loop0
R1(config-if)#ip router isis
R1(config-if)#exit
R1(config)#interface Ser1/0
R1(config-if)#ip router isis
R1(config-if)#end
R1#
配置R2：
R2(config)#router isis
R2(config-router)#log-adjacency-changes
R2(config-router)#net 49.0001.2222.2222.2222.00
R2(config-router)#exit
R2(config)#interface Eth0/0
R2(config-if)#ip router isis
R2(config)#interface Loop0
R2(config-if)#ip router isis
R2(config-if)#end
R2#
配置R3：
R3(config)#router isis
R3(config-router)#log-adjacency-changes
R3(config-router)#net 49.0001.3333.3333.3333.00
R3(config-router)#exit
R3(config)#interface Ser1/0
R3(config-if)#ip router isis
R3(config-if)#exit
R3(config)#interface Loop0
R3(config-if)#ip router isis
R3(config-if)#end
R3#
4、检查ISIS
R1#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2ia - IS-IS inter area, * - candidate default, U - per-user static routeo - ODR, P - periodic downloaded static route, H - NHRP, l - LISPa - application route+ - replicated route, % - next hop override
Gateway of last resort is not set1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback02.0.0.0/32 is subnetted, 1 subnets
i L1 2.2.2.2 [115/20] via 12.1.1.2, 00:03:06, Ethernet0/03.0.0.0/32 is subnetted, 1 subnets
i L1 3.3.3.3 [115/20] via 13.1.1.3, 00:01:48, Serial1/012.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 12.1.1.0/24 is directly connected, Ethernet0/0
L 12.1.1.1/32 is directly connected, Ethernet0/013.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 13.1.1.0/24 is directly connected, Serial1/0
L 13.1.1.1/32 is directly connected, Serial1/0
R1从R2和R3学习到的ISIS路由，L1路由描述区域内的路由
R1#show isis neighbors
System Id Type Interface IP Address State Holdtime Circuit Id
R2 L1 Et0/0 12.1.1.2 UP 9 R2.01
R2 L2 Et0/0 12.1.1.2 UP 8 R2.01
R3 L1L2 Se1/0 13.1.1.3 UP 28 00
查看ISIS邻居表
R1#show clns neighbors
System Id Interface SNPA State Holdtime Type Protocol
R2 Et0/0 aabb.cc00.0200 Up 9 L1L2 IS-IS
R3 Se1/0 *HDLC* Up 25 L1L2 IS-IS
查看clns邻居表
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 * 0x0000000A 0xE4D3 1012 0/0/0
R2.00-00 0x00000006 0xC17A 1008 0/0/0
R2.01-00 0x00000002 0x2431 1005 0/0/0
R3.00-00 0x00000004 0x3EF6 419 0/0/0IS-IS Level-2 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
R1.00-00 * 0x0000000A 0x1A47 1122 0/0/0
R2.00-00 0x0000000A 0xA782 1120 0/0/0
R2.01-00 0x00000002 0xB32A 1120 0/0/0
R3.00-00 0x00000005 0x2CFE 419 0/0/0
查看ISIS链路状态数据库
R1#show isis database detail
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
R1.00-00 * 0x0000000A 0xE4D3 975 0/0/0Area Address: 49.0001NLPID: 0xCC Hostname: R1Metric: 10 IS R3.00Metric: 10 IS R2.01IP Address: 1.1.1.1Metric: 10 IP 12.1.1.0 255.255.255.0Metric: 10 IP 1.1.1.1 255.255.255.255Metric: 10 IP 13.1.1.0 255.255.255.0
R2.00-00 0x00000006 0xC17A 971 0/0/0Area Address: 49.0001NLPID: 0xCC Hostname: R2Metric: 10 IS R2.01IP Address: 2.2.2.2Metric: 10 IP 12.1.1.0 255.255.255.0Metric: 10 IP 2.2.2.2 255.255.255.255
R2.01-00 0x00000002 0x2431 968 0/0/0Metric: 0 IS R2.00Metric: 0 IS R1.00
R3.00-00 0x00000004 0x3EF6 382 0/0/0Area Address: 49.0001NLPID: 0xCC Hostname: R3Metric: 10 IS R1.00IP Address: 3.3.3.3Metric: 10 IP 13.1.1.0 255.255.255.0Metric: 10 IP 3.3.3.3 255.255.255.255
IS-IS Level-2 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
R1.00-00 * 0x0000000A 0x1A47 1085 0/0/0Area Address: 49.0001NLPID: 0xCC Hostname: R1Metric: 10 IS R3.00Metric: 10 IS R2.01IP Address: 1.1.1.1Metric: 10 IP 12.1.1.0 255.255.255.0Metric: 10 IP 1.1.1.1 255.255.255.255Metric: 10 IP 13.1.1.0 255.255.255.0Metric: 20 IP 2.2.2.2 255.255.255.255Metric: 20 IP 3.3.3.3 255.255.255.255
R2.00-00 0x0000000A 0xA782 1083 0/0/0Area Address: 49.0001NLPID: 0xCC Hostname: R2Metric: 10 IS R2.01IP Address: 2.2.2.2Metric: 10 IP 12.1.1.0 255.255.255.0Metric: 10 IP 2.2.2.2 255.255.255.255Metric: 20 IP 1.1.1.1 255.255.255.255Metric: 30 IP 3.3.3.3 255.255.255.255Metric: 20 IP 13.1.1.0 255.255.255.0
R2.01-00 0x00000002 0xB32A 1083 0/0/0Metric: 0 IS R2.00Metric: 0 IS R1.00
R3.00-00 0x00000005 0x2CFE 382 0/0/0Area Address: 49.0001NLPID: 0xCC Hostname: R3Metric: 10 IS R1.00IP Address: 3.3.3.3Metric: 10 IP 13.1.1.0 255.255.255.0Metric: 20 IP 1.1.1.1 255.255.255.255Metric: 30 IP 2.2.2.2 255.255.255.255Metric: 20 IP 12.1.1.0 255.255.255.0Metric: 10 IP 3.3.3.3 255.255.255.255
查看ISIS链路状态数据库详细信息。
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