NE40E routers, two routers are in different location i.e Chenai and Hyderabad, india. Both are configured as Route Reflectors.
when i was trying login through telnet from one router to another router it was giving error : MD5 Authentication Failure.Router was not properly operated due to this error.
MD5 authentication Failure
1. Whenever a new router is installed, its router ID (Management IP) should be added in both the RRs and it will solve the problem.
2. We added below command in every port connected to another router.
isis authentication-mode md5 ttslisis
id this password is wrong of if you leave some space, also we get a MD5 authentication failure error on the router.