Icnd23 s03l05

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Icnd23 s03l05

  1. 1. Determining IP Routes Enabling RIP © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-1
  2. 2. Outline • Overview • EIGRP Features • EIGRP and IGRP Comparison • EIGRP Configuration • EIGRP Configuration Verification • EIGRP Configuration Troubleshooting • Summary © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-2
  3. 3. Introducing EIGRP EIGRP supports: • Rapid convergence • Reduced bandwidth usage • Multiple network-layer protocols © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-3
  4. 4. EIGRP Terminology © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-4
  5. 5. Comparing EIGRP and IGRP • • • • Same metric Same load balancing Improved convergence time (EIGRP) Reduced network overhead (EIGRP) © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-5
  6. 6. Configuring EIGRP Router(config)# router eigrp autonomous-system • Defines EIGRP as the IP routing protocol outer(config-router)# network network-number • Selects participating attached networks © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-6
  7. 7. EIGRP Configuration Example © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-7
  8. 8. Verifying the EIGRP Configuration Router# show ip route eigrp • Displays current EIGRP entries in the routing table Router# show ip protocols • Displays the parameters and current state of the active process Router# show ip eigrp interfaces • Displays information about interfaces configured for EIGRP Router# show ip eigrp interfaces IP EIGRP interfaces for process 109 Interface Di0 Et0 SE0:1.16 Tu0 Peers 0 1 1 1 © 2006 Cisco Systems, Inc. All rights reserved. Xmit Queue Un/Reliable 0/0 0/0 0/0 0/0 Mean SRTT 0 337 10 330 Pacing Time Un/Reliable 11/434 0/10 1/63 0/16 Multicast Flow Timer 0 0 103 0 Pending Routes 0 0 0 0 ICND v2.3—3-8
  9. 9. Verifying the EIGRP Configuration (Cont.) Router# show ip eigrp neighbors • Displays the neighbors discovered by IP EIGRP Router# show ip eigrp neighbors IP-EIGRP Neighbors for process 77 Address Interface 172.16.81.28 172.16.80.28 172.16.80.31 Ethernet1 Ethernet0 Ethernet0 Holdtime (secs) 13 14 12 Router# show ip eigrp neighbors detail IP-EIGRP neighbors for process 101 H Address Interface 3 1.1.1.3 Et0/0 Version 12.2/1.2, Retrans:0, Retries:0 Restart time 00:01:05 0 10.4.9.5 Fa0/0 Version 12.2/1.2, Retrans: 0, Retries: 0 2 10.4.9.10 Fa0/0 Version 12.2/1.2, Retrans: 1, Retries: 0 1 10.4.9.6 Fa0/0 Version 12.2/1.2, Retrans: 1, Retries: 0 © 2006 Cisco Systems, Inc. All rights reserved. Uptime (h:m:s) 0:00:41 0:02:01 0:02:02 Q Count 0 0 0 Seq Num 11 10 4 SRTT (ms) 4 12 5 RTO (ms) 20 24 20 Hold Uptime SRTT RTO Q Seq Tye (sec) (ms) Cnt Num 12 00:04:48 1832 5000 0 14 11 00:04:07 768 4608 0 4 S 13 1w0d 1 3000 0 6 S 12 1w0d 1 3000 0 4 S ICND v2.3—3-9
  10. 10. Verifying the EIGRP Configuration (Cont.) Router# show ip eigrp topology • Displays the IP EIGRP topology table Router# show ip eigrp topology IP-EIGRP Topology Table for process 77 Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply, r - Reply status P 172.16.90.0 255.255.255.0, 2 successors, FD is 0 via 172.16.80.28 (46251776/46226176), Ethernet0 via 172.16.81.28 (46251776/46226176), Ethernet1 via 172.16.80.31 (46277376/46251776), Serial0 P 172.16.81.0 255.255.255.0, 1 successors, FD is 307200 via Connected, Ethernet1 via 172.16.81.28 (307200/281600), Ethernet1 via 172.16.80.28 (307200/281600), Ethernet0 via 172.16.80.31 (332800/307200), Serial0 © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-10
  11. 11. Verifying the EIGRP Configuration (Cont.) Router# show ip eigrp traffic • Displays the number of IP EIGRP packets sent and received Router# show ip eigrp traffic IP-EIGRP Traffic Statistics for process 77 Hellos sent/received: 218/205 Updates sent/received: 7/23 Queries sent/received: 2/0 Replies sent/received: 0/2 Acks sent/received: 21/14 © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-11
  12. 12. debug ip eigrp Command Router# debug ip eigrp IP-EIGRP: Processing incoming UPDATE packet IP-EIGRP: Ext 192.168.3.0 255.255.255.0 M 386560 - 256000 130560 SM 360960 256000 104960 IP-EIGRP: Ext 192.168.0.0 255.255.255.0 M 386560 - 256000 130560 SM 360960 256000 104960 IP-EIGRP: Ext 192.168.3.0 255.255.255.0 M 386560 - 256000 130560 SM 360960 256000 104960 IP-EIGRP: 172.69.43.0 255.255.255.0, - do advertise out Ethernet0/1 IP-EIGRP: Ext 172.69.43.0 255.255.255.0 metric 371200 - 256000 115200 IP-EIGRP: 192.135.246.0 255.255.255.0, - do advertise out Ethernet0/1 IP-EIGRP: Ext 192.135.246.0 255.255.255.0 metric 46310656 - 45714176 596480 IP-EIGRP: 172.69.40.0 255.255.255.0, - do advertise out Ethernet0/1 IP-EIGRP: Ext 172.69.40.0 255.255.255.0 metric 2272256 - 1657856 614400 IP-EIGRP: 192.135.245.0 255.255.255.0, - do advertise out Ethernet0/1 IP-EIGRP: Ext 192.135.245.0 255.255.255.0 metric 40622080 - 40000000 622080 IP-EIGRP: 192.135.244.0 255.255.255.0, - do advertise out Ethernet0/1 © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-12
  13. 13. Summary • EIGRP is an interior gateway protocol that scales well and provides quick convergence times with minimal network traffic. • EIGRP is an enhanced version of IGRP developed by Cisco, with improved convergence properties and operating efficiency over IGRP. • The router eigrp and network commands can be used to create an EIGRP routing process. • The show ip eigrp commands can be used to verify the EIGRP configuration. • The debug ip eigrp privileged EXEC command can be used to display information on EIGRP packets. © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-13
  14. 14. © 2006 Cisco Systems, Inc. All rights reserved. ICND v2.3—3-14

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