Cannot access via telnet

[vlad06_2013]

Hey,

I have been configuring a router via telnet and all of a sudden I have locked myself out and the admin login credentials I have been using are not working.

The last commands I remember issuing were:

line vty 0 4

password xxxxxxxxxxx

login authentication default

What does the login authentication default command do?

Can anybody please help? 

[nkarthikeyan]

Hi,

This enables you the local authentication for your vty access. But you should have the respective AAA configuration for authentication created prior giving this command. Something like the below example..

Router>enable

Router#configure terminal

Router(config)#aaa new-model

Router(config-if)#aaa authentication login default local

Router(config)#line vty 0 4

Router(config-line)#login authentication default

Router(config-line)#end

Hope this clarifies your query

Regards

Karthik