EIGRP Configuration Module

This configuration module configures the EIGRP routing process on Cisco IOS, Cisco IOS-XE, and Cisco Nexus-OS.

Supported features:

  • IPv4 and IPv6

  • EIGRP AS number

  • Unnumbered point-to-point interfaces (Cisco IOS/IOS-XE only)

  • Passive interfaces

Global Parameters

  • eigrp.as sets the network-wide EIGRP AS number (default: 1)

Node Parameters

  • eigrp.as – per-node EIGRP AS number (default: 1 – inherited from global defaults)

Example

We want to create a three-router EIGRP network testing IOS, IOS-XE, and Nexus OS EIGRP implementation.

All devices run EIGRP:

module: [ eigrp ]

We’ll use EIGRP AS 2:

eigrp:
  as: 2

We’ll use IPv4 and IPv6 addressing in our lab. IPv6 addresses will be configured on loopback and LAN interfaces but not on P2P interfaces.

addressing:
  loopback:
    ipv4: 172.18.1.0/24
    ipv6: 2001:db8:0::/48
  lan:
    ipv4: 172.19.0.0/16
    ipv6: 2001:db8:1::/48

The lab has three nodes, each one of them running a different operating system:

nodes:
- name: r1
  device: iosv
- name: r2
  device: csr
- name: s1
  device: nxos

All three devices share a LAN interface. There are two P2P links and a stub interface connected to each device. The bandwidth of the LAN interface is set to 100 Mbps.

links:
- r1:
  r2:
  s1:
  bandwidth: 100000
- r1-r2
- r2-s1
- r1
- r2
- s1

Resulting EIGRP Configurations

The above topology generates the following device configurations [1].

R1 (Cisco IOS)

router eigrp 2
 network 0.0.0.0 255.255.255.255
 passive-interface GigabitEthernet0/3
 passive-interface GigabitEthernet0/0
!
ipv6 router eigrp 2
 passive-interface GigabitEthernet0/3
!
interface Loopback0
 ipv6 eigrp 2
!
interface GigabitEthernet0/1
 description r1 -> [r2,s1]
 bandwidth 100000
 ipv6 eigrp 2
!
interface GigabitEthernet0/2
 description r1 -> r2
!
interface GigabitEthernet0/3
 ipv6 eigrp 2
 description Stub interface

R2 (Cisco IOS-XE)

router eigrp 2
 network 0.0.0.0 255.255.255.255
 passive-interface GigabitEthernet5
 passive-interface GigabitEthernet1
!
ipv6 router eigrp 2
 passive-interface GigabitEthernet5
!
interface Loopback0
 ipv6 eigrp 2
!
interface GigabitEthernet2
 description r2 -> [r1,s1]
 bandwidth 100000
 ipv6 eigrp 2
!
interface GigabitEthernet3
 description r2 -> r1
!
interface GigabitEthernet4
 description r2 -> s1
!
interface GigabitEthernet5
 description Stub interface
 ipv6 eigrp 2

S1 (Cisco Nexus-OS)

feature eigrp
!
router eigrp 2
 address-family ipv6 unicast
!
interface loopback0
 ip router eigrp 2
 ipv6 router eigrp 2
!
interface Ethernet1/1
 description s1 -> [r1,r2]
 ip router eigrp 2
 ipv6 router eigrp 2
 bandwidth 100000
!
interface Ethernet1/2
 description s1 -> r2
 ip router eigrp 2
!
interface Ethernet1/3
 description Stub interface
 ip router eigrp 2
 ipv6 router eigrp 2
 ip passive-interface eigrp 2
 ipv6 passive-interface eigrp 2

Complete network topology:

addressing:
  loopback:
    ipv4: 172.18.1.0/24
    ipv6: 2001:db8:0::/48
  lan:
    ipv4: 172.19.0.0/16
    ipv6: 2001:db8:1::/48

module: [ eigrp ]

eigrp:
  as: 2

nodes:
- name: r1
  device: iosv
- name: r2
  device: csr
- name: s1
  device: nxos

links:
- r1:
  r2:
  s1:
  bandwidth: 100000
- r1-r2
- r2-s1
- r1
- r2
- s1