Day 11 eigrp
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EIGRP is an enhanced interior gateway protocol developed by Cisco that offers rapid convergence and reduced network traffic compared to its predecessor IGRP. The document provides an overview of EIGRP features, configuration, verification, and troubleshooting methods, including specific commands to monitor EIGRP-related activities. Key commands such as 'show ip eigrp' and 'debug ip eigrp' are highlighted for verifying the EIGRP configuration and analyzing packet exchanges.
Day 11 eigrp
- 1. © 2006 Cisco Systems, Inc. All rights reserved. Determining IP Routes Enabling EIGRP
- 2. © 2006 Cisco Systems, Inc. All rights reserved. Outline • Overview • EIGRP Features • EIGRP and IGRP Comparison • EIGRP Configuration • EIGRP Configuration Verification • EIGRP Configuration Troubleshooting • Summary
- 3. © 2006 Cisco Systems, Inc. All rights reserved. Introducing EIGRP EIGRP supports: • Rapid convergence • Reduced bandwidth usage • Multiple network-layer protocols
- 4. © 2006 Cisco Systems, Inc. All rights reserved. EIGRP Terminology
- 5. © 2006 Cisco Systems, Inc. All rights reserved. Comparing EIGRP and IGRP • Same metric • Same load balancing • Improved convergence time (EIGRP) • Reduced network overhead (EIGRP)
- 6. © 2006 Cisco Systems, Inc. All rights reserved. Configuring EIGRP outer(config-router)# network network-number • Selects participating attached networks Router(config)# router eigrp autonomous-system • Defines EIGRP as the IP routing protocol
- 7. © 2006 Cisco Systems, Inc. All rights reserved. EIGRP Configuration Example
- 8. © 2006 Cisco Systems, Inc. All rights reserved. Verifying the EIGRP Configuration Router# show ip eigrp interfaces • Displays information about interfaces configured for EIGRP Router# show ip eigrp interfaces IP EIGRP interfaces for process 109 Xmit Queue Mean Pacing Time Multicast Pending Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes Di0 0 0/0 0 11/434 0 0 Et0 1 0/0 337 0/10 0 0 SE0:1.16 1 0/0 10 1/63 103 0 Tu0 1 0/0 330 0/16 0 0 Router# show ip protocols Router# show ip route eigrp • Displays current EIGRP entries in the routing table • Displays the parameters and current state of the active process
- 9. © 2006 Cisco Systems, Inc. All rights reserved. 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 Holdtime Uptime Q Seq SRTT RTO (secs) (h:m:s) Count Num (ms) (ms) 172.16.81.28 Ethernet1 13 0:00:41 0 11 4 20 172.16.80.28 Ethernet0 14 0:02:01 0 10 12 24 172.16.80.31 Ethernet0 12 0:02:02 0 4 5 20 Router# show ip eigrp neighbors detail IP-EIGRP neighbors for process 101 H Address Interface Hold Uptime SRTT RTO Q Seq Tye (sec) (ms) Cnt Num 3 1.1.1.3 Et0/0 12 00:04:48 1832 5000 0 14 Version 12.2/1.2, Retrans:0, Retries:0 Restart time 00:01:05 0 10.4.9.5 Fa0/0 11 00:04:07 768 4608 0 4 S Version 12.2/1.2, Retrans: 0, Retries: 0 2 10.4.9.10 Fa0/0 13 1w0d 1 3000 0 6 S Version 12.2/1.2, Retrans: 1, Retries: 0 1 10.4.9.6 Fa0/0 12 1w0d 1 3000 0 4 S Version 12.2/1.2, Retrans: 1, Retries: 0
- 10. © 2006 Cisco Systems, Inc. All rights reserved. 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
- 11. © 2006 Cisco Systems, Inc. All rights reserved. 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
- 12. © 2006 Cisco Systems, Inc. All rights reserved. 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
- 13. © 2006 Cisco Systems, Inc. All rights reserved. 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.