User Manual

M4300 Intelligent Edge Series Fully Managed Stackable Switches
Configure OSPF and OSPFv3 User Manual384
Virtual links can be configured between any pair of area border routers having interfaces
to a common (non-backbone) area.
6. Configure the Neighbor Router ID by entering the neighbor portion of a virtual link
specification.
Virtual links can be configured between any pair of area border routers having interfaces
to a common (non-backbone) area.
7. In the Hello Interval field, enter the OSPF hello interval for the specified interface in
seconds.
This parameter must be the same for all routers attached to a network. The valid values
range from 1 to 65,535.
The default is 10 seconds.
8. In the Dead Interval field, enter the OSPF dead interval for the specified interface in
seconds.
This specifies how long a router waits to see a neighbor router's hello packets before
declaring that the router is down.
This parameter must be the same for all routers
attached to a network. This value must be a multiple of the hello interval (for example, 4).
The valid values range from 1 to 65,535. The default is 40.
9. In the Iftransit Delay Interval field, enter the OSPF transit delay for the specified interface.
This specifies the estimated number of seconds it takes to transmit a link state update
packet over the selected interface.
The valid values range from 1 to 3600 seconds (1
hour). The default value is 1 second.
10. In the Retransmit Interval field, enter the OSPF retransmit interval for the specified
interface.
This is the number of seconds between link state advertisements for adjacencies
belonging to this router interface. This value is also used when retransmitting database
descriptions and link state request packets. The valid values range from 1 to 3600
seconds (1 hour). The default is 5 seconds.
11. From the Authentication T
ype menu, select one of the following authentication types:
• None.
This is the initial interface state.
• Simple. If you select Simple, you are prompted to enter an authentication key
. This
key is included, in the clear, in the OSPF header of all packets sent on the network. All
routers on the network must be configured with the same key.
• Encrypt. If you select Encrypt you are prompted to enter both an authentication key
and an authentication ID. Encryption uses the MD5 Message-Digest algorithm.
All
routers on the network must be configured with the same key and ID.
12. In the Authentication Key field, enter the OSPF authentication key for the specified
interface.
If you do not select authentication, you are not prompted to enter a key.
• If you select Simple authentication, you cannot use a key of more than 8 octets.
• If you select Encrypt, the key can be up to 16 octets long.