H3C Technologies H3C S7500E Series Switches - Manual (Page 111)

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A stub router has nothing to do with a stub area.
Configuring OSPF Authentication
OSPF supports packet authentication to ensure the security of packet exchange.
After authentication is configured, OSPF only receives packets that pass authentication, so failed
packets cannot establish neighboring relationships.
To configure OSPF authentication, you need to configure the same area authentication mode on all the
routers in the area. In addition, the authentication mode and password for all interfaces attached to the
same area must be identical.
Follow these steps to configure OSPF authentication:
To do… Use the command… Remarks
Enter system view system-view —
Enter OSPF view
ospf [ process-id | router-id router-id |
vpn-instance instance-name ] *
—
Enter area view area area-id —
Configure the authentication mode authentication-mode { md5 | simple }
Required
Not configured by
default.
Exit to OSPF view quit —
Exit to system view quit —
Enter interface view interface interface-type interface-number —
Configure the authentication mode
(simple authentication) for the
interface
ospf authentication-mode simple [ cipher
| plain ] password
Configure the authentication mode
(MD5 authentication) for the
interface
ospf authentication-mode { hmac-md5 |
md5 } key-id [ cipher | plain ] password
Either is required.
Not configured by
default.
Adding the Interface MTU into DD Packets
Generally, when an interface sends a DD packet, it adds 0 into the Interface MTU field of the DD
packet rather than the interface MTU.
Follow these steps to add the interface MTU into DD packets: