Member_2_6478753
asked on
what is the difference btw OSPF area authentication VS OSPF interface authentication
please check this article please ..
http://www.ciscopress.com/articles/article.asp?p=1728836
my question when i configured ospf authentication per one interface like this
|---lan----router A-s0---------------------s 1-- router B------ lan ----|
i make here a interface authentication...
if i have like this scenario
|---lan----router A-s0---------------------s 1-- router B-s0---s1-router C--------- lan ----|
all 3 router in the same area !
if i make a area authentication i should go in each router and enable the password in only one interface ???? + add area 0 authenticationn
like on router B
i make
Router B(config)#int s0
Router B(config-inf)#ip ospf authentication message-digest
Router B(config-int)#ip ospf message-digest-key 12 md5 "password"
Router B(config-router)#area 0 authentication message-digest
no need to make for the second interface s1 for router B ..
??
http://www.ciscopress.com/articles/article.asp?p=1728836
my question when i configured ospf authentication per one interface like this
|---lan----router A-s0---------------------s
i make here a interface authentication...
if i have like this scenario
|---lan----router A-s0---------------------s
all 3 router in the same area !
if i make a area authentication i should go in each router and enable the password in only one interface ???? + add area 0 authenticationn
like on router B
i make
Router B(config)#int s0
Router B(config-inf)#ip ospf authentication message-digest
Router B(config-int)#ip ospf message-digest-key 12 md5 "password"
Router B(config-router)#area 0 authentication message-digest
no need to make for the second interface s1 for router B ..
??
ASKER
mmmm in the middle router when i choose interface authentication in the s0 interface for example and than i apply area authentication --- > no need to make authentication in the second interface of the middle router B ???
Area authentication mean in all UP interfaces in the router ?
Area authentication mean in all UP interfaces in the router ?
No, you will still need to go underneath the other interface of router B and specify what key that interface should use.
ASKER
so what i need to make authentication for area ?
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Configuring Area authentication will enable authentication for the entire area. The area authentication is a quicker way to enable authentication to save you some key strokes.
Keep in mind that anything configured at the interface level will override the area configuration command.