H3C Technologies H3C S3600 Series Switches - Manual (Page 341)

4-14
Configuration Prerequisites
Before configuring OSPF area attributes, perform the following tasks:
z Configuring the network layer addresses of interfaces so that the adjacent nodes are reachable to
each other at the network layer
z Performing basic OSPF configuration
Configuring OSPF Area Attributes
Follow these steps to configure OSPF area attributes:
To do... Use the command... Remarks
Enter system view system-view —
Enter OSPF view
ospf [ process-id [ router-id
router-id ] ]
—
Enter OSPF area view area area-id —
Configure the current area to be
a stub area
stub [ no-summary ]
Optional
By default, no area is configured
as a stub area.
Configure the current area to be
an NSSA area
nssa
[ default-route-advertise |
no-import-route |
no-summary |
translate-always ] *
Optional
By default, no area is configured
as an NSSA area.
Configure the cost of the default
route transmitted by OSPF to a
stub or NSSA area
default-cost cost
Optional
This can be configured on an ABR
only. By default, the cost of the
default route to a stub or NSSA
area is 1.
Create and configure a virtual
link
vlink-peer router-id [ hello
seconds | retransmit
seconds | trans-delay
seconds | dead seconds |
simple password | md5
keyid key ] *
Optional
For a virtual link to take effect, you
need to use this command at both
ends of the virtual link and ensure
consistent configurations of the
hello, dead, and other
parameters at both ends.
z You must use the stub command on all the routers connected to a stub area to configure the area
with the stub attribute.
z You must use the nssa command on all the routers connected to an NSSA area to configure the
area with the NSSA attribute.
OSPF Network Type Configuration
OSPF divides networks into four types by link layer protocol. See section " OSPF Network Type ". An
NBMA network must be fully connected. That is, any two routers in the network must be directly