User Manual

Routing
288
M6100 Web Management User Guide
 Configure the OSPF Virtual Link.
1. Enter the Area ID of the OSPF area.
An Area ID is a 32-bit integer in dotted decimal
format that uniquely identifies the area to which a router interface connects. Virtual links
may be configured between any pair of area border routers having interfaces to a
common (non-backbone) area.
2. Configure the Neighbor Router ID by entering the neighbor portion of a V
irtual Link
specification. Virtual links may be configured between any pair of area border routers having
interfaces to a common (non-backbone) area.
3. 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. Valid
values range from 1 to 65,535. The default is 10 seconds.
4. In the Dead Interval field, enter the OSPF dead interval for the specified interface in
seconds.
This specifies how long a router will wait 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 should a multiple of the Hello Interval (for example, 4).
Valid values range from 1 to 65,535. The default is 40.
5. 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. Valid values range from 1 to 3600 seconds (1 hour). The
default value is 1 second.
6. 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. Valid values range from 1 to 3600 seconds (1
hour). The default is 5 seconds.
7. 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 will be prompted to enter an authentication key.
This key will be 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 will be 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.
8. In the Authentication Key field, enter the OSPF Authentication Key for the specified
interface. If you do not choose to use authentication, you will not be prompted to enter a key.
• If you choose Simple authentication you cannot use a key of more than 8 octets.
• If you choose Encrypt the key may be up to 16 octets long.