EIGRP Router ID is an important component to EIGRP and is a way for EIGRP to identify each router that is participating in the EIGRP ASN domain.
The EIGRP enabled router uses the following 3 steps to determine its ID:
- Manual configuration within the EIGRP config
- Highest IPv4 address on an enabled and operating loopback interface
- Highest IPv4 address on an enabled and operating non loopback interface
Manually configuring an EIGRP Router ID:
Current EIGRP Router ID on Router 1:
Configuring a new EIGRP Router ID:
Enter configuration commands, one per line. End with CNTL/Z.
Router1(config)#router eigrp 1
Router1(config-router)#eigrp router-id 126.96.36.199