HP 3500YL - Manual (Page 239)

IP Routing Features
Configuring OSPF
4. Assign the Routing Switch to OSPF Areas
After you globally enable OSPF on the routing switch (in the previous step),
use this command to assign one or more OSPF areas within your autonomous
system (AS). A routing switch can belong to one area or to multiple areas.
(Participation in a given, assigned area requires configuring one or more
VLANs or subnets and assigning each to the desired area. Refer to page 5-69.)
■ If you want the VLANs and any subnets configured on the routing switch
to all reside in the same area, then you need to configure only that one
area. (In this case, the routing switch would operate as an internal router
for the area.)
■ If you want to put different VLANs or subnets on the routing switch into
different areas, then you need to re-execute this command for each area.
(In this case, the routing switch will operate as an ABR for each of the
configured areas.)
N o t e Each ABR must either be directly connected to the backbone area (0) or be
configured with a virtual link to the backbone area through another ABR that
is directly connected to the backbone area. For information on this step, refer
to “13. Configuring an ABR To Use a Virtual Link to the Backbone” on page 5­
88.
5-65