Configuration of CCNA EIGRP routing protocol

Concept:

1. Neighbor table: The address of the direct-attached router and the interface to which it is connected

2. Topology table:

A. Routing Status: P (passive) a (activity)

B. Feasible distance (FD): Minimum metric to destination (metric)

C. Reporting distance (AD): The cost of a neighbor arriving at the destination network

D. Equivalent load balancing: Two link FD values at the same time as the agreed destination

E. Subsequent routing: a skip to the main route the router (R12 is the successor route of the R11)

F. Feasible successor routes: AD2<FD1, that is, a viable successor route, after the main routing failure, the feasible successor route immediately replaced

G. Non-row successor routes: AD2>FD1, when the main routing link fails, the route needs to be recalculated.

3. Routing table: shows only the best route in the top table, that is, the successor route

4. Order

Router EIGRP 100 100 is an autonomous domain system (AS) number

No auto-summery turn off automatic rollup

Network 192.168.1.254 0.0.0.0

Network interface IP Address wildcard character

.......

5. View Neighbor table, topology table, routing table

Show IP eigrp nei

Show IP eigrp topolopy

Show IP route

Experiment

1. Topology map

2. Configure

Show run on the R1

R1#show Run

Building configuration ...

Current configuration:745 bytes

!

Version 12.4

No service Timestamps log datetime msec

No service timestamps debug datetime msec

No service password-encryption

!

Hostname R1

!

!

!

No IP domain-lookup

!

!

Interface fastethernet0/0

IPAddress 172.16.12.1 255.255.255.0

Duplex Auto

Speed auto

!

Interface FASTETHERNET0/1

IPAddress 172.16.14.1 255.255.255.0

Duplex Auto

Speed auto

!

Interface ethernet1/0

IPAddress 10.10.1.254 255.255.255.0

Duplex Auto

Speed auto

!

Interface Vlan1

Noip Address

Shutdown

!

Router EIGRP 100

Network 10.10.1.254 0.0.0.0

Network 172.16.12.1 0.0.0.0

Network 172.16.14.1 0.0.0.0

Noauto-summary

!

IP classless

!

!

Line con 0

Exec-timeout 0 0

Logging synchronous

Line vty 0 4

Login

!

!

End

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Show run on the R2

R2#show Run

Building configuration ...

Current configuration:709 bytes

!

Version 12.4

No service Timestamps log datetime msec

No service timestamps debug datetime msec

No service password-encryption

!

Hostname R2

!

!

No IP domain-lookup

!

!!

Interface Loopback0

IPAddress 172.16.55.1 255.255.255.0

!

Interface fastethernet0/0

IPAddress 172.16.12.2 255.255.255.0

Duplex Auto

Speed auto

!

Interface FASTETHERNET0/1

IPAddress 172.16.23.2 255.255.255.0

Duplex Auto

Speed auto

!

Interface Vlan1

Noip Address

Shutdown

!

Router EIGRP 100

Network 172.16.12.0 0.0.0.255

Network 172.16.23.0 0.0.0.255

No auto-summary

!

IP classless

!

!

Line con 0

Exec-timeout 0 0

Logging synchronous

Line vty 0 4

Login

!

!

!

End

Show run on the R3

R2#show Run

Building configuration ...

Current configuration:709 bytes

!

Version 12.4

No service Timestamps log datetime msec

No service timestamps debug datetime msec

No service password-encryption

!

Hostname R2

!

!

No IP domain-lookup

!

!

Interface Loopback0

IPAddress 172.16.55.1 255.255.255.0

!

Interface fastethernet0/0

IPAddress 172.16.12.2 255.255.255.0

Duplex Auto

Speed auto

!

Interface FASTETHERNET0/1

IPAddress 172.16.23.2 255.255.255.0

Duplex Auto

Speed auto

!

Interface Vlan1

Noip Address

Shutdown

!

Router EIGRP 100

Network 172.16.12.0 0.0.0.255

Network 172.16.23.0 0.0.0.255

Network 172.16.0.0

Noauto-summary

!

IP classless

!

!

Line con 0

Exec-timeout 0 0

Logging synchronous

Line vty 0 4

Login

!

!

End

Show run on the R4

R4#show Run

Building configuration ...

Current configuration:625 bytes

!

Version 12.4

No service Timestamps log datetime msec

No service timestamps debug datetime msec

No service password-encryption

!

Hostname R4

!

!

No IP domain-lookup

!

!

Interface fastethernet0/0

IPAddress 172.16.14.4 255.255.255.0

Duplex Auto

Speed auto

!

Interface FASTETHERNET0/1