How to Implement IPv6 EIGRP on Cisco Routers

Implementing IPv6 EIGRP (Enhanced Interior Gateway Routing Protocol) on Cisco routers involves enabling EIGRP for IPv6 and configuring EIGRP parameters. Here’s a step-by-step guide:

Step 1: Access the Router’s CLI

Connect to your Cisco router using a console cable or through SSH/Telnet.

Step 2: Enter Privileged Exec Mode

enable

Provide the enable password if prompted.

Step 3: Enter Global Configuration Mode

configure terminal

Step 4: Enable IPv6 Unicast Routing

ipv6 unicast-routing

This command enables IPv6 routing on the router.

Step 5: Configure EIGRP for IPv6

router eigrp <AS-number>

Replace with the desired EIGRP Autonomous System number.

Example:

router eigrp 100

Step 6: Enable EIGRP on an Interface

interface <interface-type> <interface-number>
ipv6 eigrp <AS-number>

Replace with the specific interface and with the EIGRP AS number.

Example:

interface GigabitEthernet0/0
ipv6 eigrp 100

Step 7: Exit EIGRP Configuration

exit

Step 8: Verify EIGRP Configuration

show ipv6 eigrp neighbors
show ipv6 eigrp interfaces

These commands will display EIGRP neighbor information and interface status.

Step 9: Save Configuration

write memory

or

copy running-config startup-config

Important Notes:

• Ensure that your router supports EIGRP for IPv6 and that it’s running a compatible IOS version.
• EIGRP AS numbers should be consistent across routers in the same EIGRP network.
• Verify that EIGRP for IPv6 is enabled on all interfaces that participate in EIGRP routing.
• Always consult the documentation for your specific router model and IOS version if you encounter any issues. The exact commands and syntax might vary depending on the specific Cisco router model and IOS version you are using.