User Manual

M4300 Intelligent Edge Series Fully Managed Stackable Switches
Configure OSPF and OSPFv3 User Manual385
The key value is displayed only if you are logged on with read/write privileges; otherwise,
it is displayed as asterisks.
13. In the Authentication ID field, enter the ID to be used for authentication.
You are prompted to enter an ID only when you select Encrypt as the authentication
type.
The ID is a number between 0 and 255, inclusive.
14. Click the Add button
The new virtual link is added.
15. Click the Apply button.
Your settings are saved.
The following table describes the nonconfigurable information that is displayed.
Table 139. OSPF Virtual Link Configuration
Field Description
Neighbor State The OSPF interface state can be one of these values:
• Down.
This is the initial interface state. The lower-level protocols indicated that
the interface is unusable. Interface parameters are set to their initial values. All
interface timers are disabled, and there are no adjacencies associated with the
interface.
• Waiting.
The router is trying to determine the identity of the backup designated
router by monitoring received hello packets. The router is not allowed to elect a
backup designated router or a designated router until it transitions out of Waiting
state. This prevents unnecessary changes of backup designated router.
• Point-to-Point.
The interface is operational, and is connected either to the virtual
link. On entering this state the router attempts to form an adjacency with the
neighboring router. hello packets are sent to the neighbor every hello interval
seconds.
• Designated Router.
This router is the designated router on the attached
network. Adjacencies are established to all other routers attached to the network.
The router must also originate a network-LSA for the network node. The network-
LSA contain links to all routers (including the designated router) attached to the
network.
• Backup Designated Router.
This router is the backup designated router on the
attached network. It is promoted to designated router if the present designated
router fails. The router establishes adjacencies to all other routers attached to the
network. The backup designated router performs slightly different functions
during the flooding procedure, as compared to the designated router.
• Other Designated Router.
The interface is connected to a broadcast or NBMA
network on which other routers were selected to be the designated router and
backup designated router either. The router attempts to form adjacencies to both
the designated router and the backup designated router.