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Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, NX-OS Release 5.0(3)U1(1)
Chapter 4 Configuring EIGRP
Configuring Advanced EIGRP
• Configuring a Summary Address for EIGRP, page 4-17
• Redistributing Routes into EIGRP, page 4-17
• Limiting the Number of Redistributed Routes, page 4-19
• Configuring Load Balancing in EIGRP, page 4-21
• Adjusting the Interval Between Hello Packets and the Hold Time, page 4-22
• Disabling Split Horizon, page 4-23
• Tuning EIGRP, page 4-23
Configuring Authentication in EIGRP
You can configure authentication between neighbors for EIGRP. See the “Authentication” section on
page 4-5.
You can configure EIGRP authentication for the EIGRP process or for individual interfaces. Interface
EIGRP authentication configuration overrides the EIGRP process-level authentication configuration.
BEFORE YOU BEGIN
Ensure that you have enabled the EIGRP feature (see the “Enabling the EIGRP Feature” section on
page 4-9).
Ensure that all neighbors for an EIGRP process share the same authentication configuration, including
the shared authentication key.
Create the key-chain for this authentication configuration. See the Cisco Nexus 3000 Series NX-OS
Security Configuration Guide.
SUMMARY STEPS
1. configure terminal
2. router eigrp instance-tag
3. address-family ipv4 unicast
4. authentication key-chain key-chain
5. authentication mode md5
6. interface interface-type slot/port
7. no switchport
8. ip router eigrp instance-tag
9. ip authentication key-chain eigrp instance-tag key-chain
10. ip authentication mode eigrp instance-tag md5
11. (Optional) copy running-config startup-config
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