IS-IS试验笔记

试验内容： 1、用IS-IS配置网络 2、调整metric值 1、用IS-IS配置网络 Router(config)#hostname r1 r1(config)#int e 0/0 r1(config-if)#ip address 2.2.2.1 255.255.255.252 r1(config-if)#no shut r1(config)#int s 1/0 r1(config-if)#ip address 7.7.7.1 255.255.255.252 r1(config-if)#no shut r1(config)#int loopback 0 r1(config-if)#ip address 1.1.1.1 255.255.255.255 r1(config-if)#exit r1(config)#router isis ；启用IS-IS r1(config-router)#net 49.0001.0000.0000.0001.00 ；定义IS标识 r1(config-router)#is-type level-1-2 ；定义类型，默认为level-1-2 r1(config-router)#exit r1(config)#int e 0/0 r1(config-if)#ip router isis ；在接口启用IS-IS r1(config-if)#isis circuit-type level-1-2 ；接口类型，默认为level-1-2 r1(config-if)#exit r1(config)#int loopback 0 r1(config-if)#ip router isis r1(config)#int s 1/0 r1(config-if)#ip router isis r1(config-if)#isis circuit-type level-1-2 Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname r2 r2(config)#int loopback 0 r2(config-if)#ip address 1.1.1.2 255.255.255.255 r2(config-if)#exit r2(config)#int e 0/0 r2(config-if)#ip add 2.2.2.2 255.255.255.252 r2(config-if)#no shut r2(config-if)#exit *Mar 1 00:11:57.211: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up *Mar 1 00:11:58.211: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state to r2(config)#int s 1/0 r2(config-if)#ip address 5.5.5.1 255.255.255.252 r2(config-if)#no shut r2(config-if)#exit *Mar 1 00:12:29.779: %LINK-3-UPDOWN: Interface Serial1/0, changed state to up *Mar 1 00:12:30.779: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state t r2(config)#router isis r2(config-router)#net 49.0001.0000.0000.0002.00 r2(config-router)#exit r2(config)#int loopback 0 r2(config-if)#ip router isis r2(config)#int e 0/0 r2(config-if)#ip router isis r2(config-if)#exit r2(config)#int s 1/0 r2(config-if)#ip router isis r2(config-if)#^Z r2#sh i *Mar 1 00:13:52.307: %SYS-5-CONFIG_I: Configured from console by consolesis nei System Id Type Interface IP Address State Holdtime Circuit Id r1 L1 Et0/0 2.2.2.1 UP 23 r2.01 r1 L2 Et0/0 2.2.2.1 UP 24 r2.01 为什么会有两条？ Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname r3 r3(config)#int loopback 0 r3(config-if)#ip address 1.1.1.3 255.255.255.255 r3(config-if)#exit r3(config)#int e 0/0 r3(config-if)#ip address 3.3.3.1 255.255.255.252 r3(config-if)#no shut r3(config-if)#exit *Mar 1 00:17:39.531: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up *Mar 1 00:17:40.531: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state texit r3(config)#router isis r3(config-router)#net 49.0002.0000.0000.0003.00 r3(config-router)#is-type level-1 r3(config-router)#exit r3(config)#int loopback 0 r3(config-if)#ip router isis r3(config-if)#isis circuit-type level-1 r3(config)#int e 0/0 r3(config-if)#ip router isis r3(config-if)#isis circuit-type level-1 Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname r4 r4(config)#int loopback 0 r4(config-if)#ip address 1.1.1.4 255.255.255.255 r4(config-if)#exit r4(config)#int e 0/0 r4(config-if)#ip address 3.3.3.2 255.255.255.252 r4(config-if)#no shut r4(config-if)#exit *Mar 1 00:20:11.451: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up *Mar 1 00:20:12.451: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state to r4(config)#int s 1/0 r4(config-if)#ip address 7.7.7.2 255.255.255.252 r4(config-if)#no shut r4(config-if)# *Mar 1 00:20:46.655: %LINK-3-UPDOWN: Interface Serial1/0, changed state to up *Mar 1 00:20:47.655: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state to up r4(config-if)#exit r4(config)#router isis r4(config-router)#net 49.0002.0000.0000.0004.00 r4(config-router)#exit r4(config)#int loopback 0 r4(config-if)#ip router isis r4(config)#int e 0/0 r4(config-if)#ip router isis r4(config-if)#exit r4(config)#int s 1/0 r4(config-if)#ip router isis r4(config-if)#exit r4(config)#int s 1/1 r4(config-if)#ip router isis Cannot enable ISIS-IP. Configure IP address or make the interface unnumbered r4(config-if)#no shut *Mar 1 00:22:32.287: %LINK-3-UPDOWN: Interface Serial1/1, changed state to up *Mar 1 00:22:33.287: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/1, changed state to upp router isis Cannot enable ISIS-IP. Configure IP address or make the interface unnumbered r4(config-if)#^Z r4# *Mar 1 00:22:47.491: %SYS-5-CONFIG_I: Configured from console by consolesh ip int s 1/1 Serial1/1 is up, line protocol is up Internet protocol processing disabled r4# *Mar 1 00:23:03.159: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/1, changed state to down r4#config t Enter configuration commands, one per line. End with CNTL/Z. r4(config)#int s 1/1 r4(config-if)#ip address 4.4.4.1 255.255.255.252 r4(config-if)#no shut r4(config-if)#exit r4(config)#^Z *Mar 1 00:23:44.159: %SYS-5-CONFIG_I: Configured from console by co r4#sh isis nei System Id Type Interface IP Address State Holdtime Circuit Id r1 L2 Se1/0 7.7.7.1 UP 27 00 r3 L1 Et0/0 3.3.3.1 UP 9 r3.01 Router>en Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname r5 r5(config)#int loop 0 r5(config-if)#ip address 1.1.1.5 255.255.255.255 r5(config-if)#exit r5(config)#int e 0/0 r5(config-if)#ip address 6.6.6.1 255.255.255.252 r5(config-if)#no shut r5(config-if)#exit *Mar 1 00:25:18.679: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up *Mar 1 00:25:19.679: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state t r5(config)#int s 1/0 r5(config-if)#ip add r5(config-if)#ip address 5.5.5.2 255.255.255.252 r5(config-if)#no shut r5(config-if)#exit *Mar 1 00:25:45.687: %LINK-3-UPDOWN: Interface Serial1/0, changed state to up *Mar 1 00:25:46.687: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state to r5(config)#int s 1/1 r5(config-if)#ip address 4.4.4.2 255.255.255.252 r5(config-if)#no shut r5(config-if)#exit *Mar 1 00:26:14.687: %LINK-3-UPDOWN: Interface Serial1/1, changed state to up *Mar 1 00:26:15.687: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/1, changed state to upsis r5(config-router)#router isis r5(config-router)#net 49.0003.0000.0000.0005.00 r5(config-router)#exit r5(config)#int loopback 0 r5(config-if)#ip router isis r5(config)#int e 0/0 r5(config-if)#ip router isis r5(config-if)#exit r5(config)#int s 1/0 r5(config-if)#ip router isis r5(config-if)#exit r5(config)#int s 1/1 r5(config-if)#ip router isis r5(config-if)#^Z r5#sh *Mar 1 00:27:34.807: %SYS-5-CONFIG_I: Configured from console by cons r5#sh isis nei System Id Type Interface IP Address State Holdtime Circuit Id r2 L2 Se1/0 5.5.5.1 UP 28 00 r5#ping 5.5.5.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 5.5.5.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 16/57/116 ms r5#sh isis nei System Id Type Interface IP Address State Holdtime Circuit Id r2 L2 Se1/0 5.5.5.1 UP 24 00 r5#ping 4.4.4.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 4.4.4.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 48/72/148 ms r5#sh isis nei System Id Type Interface IP Address State Holdtime Circuit Id r4 L2 Se1/1 4.4.4.1 UP 22 01 r2 L2 Se1/0 5.5.5.1 UP 26 00 Router>en Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname r6 r6(config)#int loopback 0 r6(config-if)#ip address 1.1.1.6 255.255.255.255 r6(config-if)#exit r6(config)#int e 0/0 r6(config-if)#ip address 6.6.6.2 255.255.255.252 r6(config-if)#no shut r6(config-if)#exit *Mar 1 00:32:04.203: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up *Mar 1 00:32:05.203: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state to r6(config)#router isis r6(config-router)#net 49.0003.0000.0000.0006.00 r6(config-router)#is-type level-1 r6(config-router)#exit r6(config)#int loopback 0 r6(config-if)#ip router isis r6(config-if)#isis circuit-type level-1 r6(config)#int e 0/0 r6(config-if)#ip router isis r6(config-if)#isis circuit-type level-1 r6(config-if)#^Z r6#sh i *Mar 1 00:33:31.239: %SYS-5-CONFIG_I: Configured from console by con r6#sh isis nei System Id Type Interface IP Address State Holdtime Circuit Id r5 L1 Et0/0 6.6.6.1 UP 8 r5.01 常用的show命令 r1#sh isis topology IS-IS paths to level-1 routers System Id Metric Next-Hop Interface SNPA r1 -- r2 10 r2 Et0/0 cc00.0bd8.0000 为什么会有level1的关系？？ IS-IS paths to level-2 routers System Id Metric Next-Hop Interface SNPA r1 -- r2 10 r2 Et0/0 cc00.0bd8.0000 r4 10 r4 Se1/0 *HDLC* r5 20 r2 Et0/0 cc00.0bd8.0000 r4 Se1/0 *HDLC* r1#sh isis nei detail System Id Type Interface IP Address State Holdtime Circuit Id r4 L2 Se1/0 7.7.7.2 UP 28 00 Area Address(es): 49.0002 SNPA: *HDLC* State Changed: 00:33:12 Format: Phase V r2 L1 Et0/0 2.2.2.2 UP 7 r2.01 Area Address(es): 49.0001 SNPA: cc00.0bd8.0000 State Changed: 00:41:47 LAN Priority: 64 Format: Phase V r2 L2 Et0/0 2.2.2.2 UP 9 r2.01 Area Address(es): 49.0001 SNPA: cc00.0bd8.0000 State Changed: 00:41:47 LAN Priority: 64 Format: Phase V r1#sh isis database IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL r1.00-00 * 0x00000009 0x157B 744 1/0/0 r2.00-00 0x00000009 0x741E 756 1/0/0 r2.01-00 0x00000004 0x78D5 988 0/0/0 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL r1.00-00 * 0x0000000D 0xEFB5 735 0/0/0 r2.00-00 0x0000000C 0x435F 751 0/0/0 r2.01-00 0x00000004 0x08CE 1074 0/0/0 r4.00-00 0x00000007 0x2682 780 0/0/0 r5.00-00 0x00000008 0x811B 975 0/0/0 r1#sh isis database detail IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL r1.00-00 * 0x00000009 0x157B 736 1/0/0 Area Address: 49.0001 NLPID: 0xCC Hostname: r1 IP Address: 1.1.1.1 Metric: 10 IP 2.2.2.0 255.255.255.252 Metric: 10 IP 7.7.7.0 255.255.255.252 Metric: 10 IP 1.1.1.1 255.255.255.255 Metric: 10 IS r2.01 2、调整metric值 r4#sh 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 1.0.0.0/32 is subnetted, 6 subnets i L2 1.1.1.1 [115/20] via 7.7.7.1, Serial1/0 i L1 1.1.1.3 [115/20] via 3.3.3.1, Ethernet0/0 i L2 1.1.1.2 [115/30] via 7.7.7.1, Serial1/0 [115/30] via 4.4.4.2, Serial1/1 i L2 1.1.1.5 [115/20] via 4.4.4.2, Serial1/1 C 1.1.1.4 is directly connected, Loopback0 i L2 1.1.1.6 [115/30] via 4.4.4.2, Serial1/1 2.0.0.0/30 is subnetted, 1 subnets i L2 2.2.2.0 [115/20] via 7.7.7.1, Serial1/0 3.0.0.0/30 is subnetted, 1 subnets C 3.3.3.0 is directly connected, Ethernet0/0 4.0.0.0/30 is subnetted, 1 subnets C 4.4.4.0 is directly connected, Serial1/1 5.0.0.0/30 is subnetted, 1 subnets i L2 5.5.5.0 [115/20] via 4.4.4.2, Serial1/1 6.0.0.0/30 is subnetted, 1 subnets i L2 6.6.6.0 [115/20] via 4.4.4.2, Serial1/1 7.0.0.0/30 is subnetted, 1 subnets C 7.7.7.0 is directly connected, Serial1/0 r4# r4# r4# r4# r4# r4#config t Enter configuration commands, one per line. End with CNTL/Z. r4(config)#int s1/1 r4(config-if)#isis metric 50 r4(config-if)#^Z r4#sh ip *Mar 1 04:42:51.354: %SYS-5-CONFIG_I: Configured from console by console 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 1.0.0.0/32 is subnetted, 6 subnets i L2 1.1.1.1 [115/20] via 7.7.7.1, Serial1/0 i L1 1.1.1.3 [115/20] via 3.3.3.1, Ethernet0/0 i L2 1.1.1.2 [115/30] via 7.7.7.1, Serial1/0 i L2 1.1.1.5 [115/40] via 7.7.7.1, Serial1/0 C 1.1.1.4 is directly connected, Loopback0 i L2 1.1.1.6 [115/50] via 7.7.7.1, Serial1/0 2.0.0.0/30 is subnetted, 1 subnets i L2 2.2.2.0 [115/20] via 7.7.7.1, Serial1/0 3.0.0.0/30 is subnetted, 1 subnets C 3.3.3.0 is directly connected, Ethernet0/0 4.0.0.0/30 is subnetted, 1 subnets C 4.4.4.0 is directly connected, Serial1/1 5.0.0.0/30 is subnetted, 1 subnets i L2 5.5.5.0 [115/30] via 7.7.7.1, Serial1/0 6.0.0.0/30 is subnetted, 1 subnets i L2 6.6.6.0 [115/40] via 7.7.7.1, Serial1/0 7.0.0.0/30 is subnetted, 1 subnets C 7.7.7.0 is directly connected, Serial1/0