when you use the command ip ospf authentication message-digest" then both router will send their username and password in the "hash" form or you can say router encript the password...its same as the comand you enter md5... its one kind of encryption form...
you configure such kind of command just bcoz of to prevent the unauthenticated packet infomation... which cause the bad routing information...
ip ospf authentication:
this command is used to configure the password to the ospf interface for the authentication.
ip ospf message-digest:
you can say its type 2 authentication...which calculate the hash value from the ospf packet content and password and this hash value is transmitted in packet with the key so you can have secure information in your ospf network
If message digest authentication is enabled in Area then all interfaces in the area need to be configured with the same authentication type. This command is used to configure message digest authentication on an OSPF interface. In Cisco IOS Software Release 12.0 and later, interface authentication can be configured independent of the authentication applied to an area.
is what actually activates the use of the key you defined in the previous statement"
Correct me if I'm wrong, but I wouldn't use the word activate in this case, as, if I leave the ip ospf authentication out of my config (with or without message-digest) it just uses what it is configured in router-config.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.