Other than a working EIGRP configuration, which option must be the same on allrouters for EIGRP authentication key rollover to work correctly?
A. SMTP
B. SNMP
C. Passwords
D. Time
Which option must be the same on allrouters for EIGRP authentication key rollover to work correctly?
D
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/15-s/ire-15-s-book/ire-rte-auth.html
You can configure multiple keys with specific lifetimes. Only one authentication packet is sent, regardless of how many valid keys exist. The software examines the key numbers in the order from lowest to highest, and uses the first valid key that it encounters. Note that the device needs to know the time to configure keys with lifetimes.