HP 3500YL - Manual (Page 240)

IP Routing Features
Configuring OSPF
Configuring an OSPF Backbone or Normal Area.
Syntax: area < ospf-area-id | backbone > [normal]
no area < ospf-area-id | backbone >
After using router ospf to globally enable OSPF and enter the
global OSPF context, execute this command to assign the
routing switch to a backbone or other normal area.
The no form of the command removes the routing switch from
the specified area.
Default: No areas. Range: 1-16 areas (of all types)
< ospf-area-id >: Specifies a normal area to which you are
assigning the routing switch. You can assign the routing
switch to one or more areas, depending on the area in which
you want each configured VLAN or subnet to reside. You can
enter area IDs in either whole number or dotted decimal
format. (The routing switch automatically converts whole
numbers to the dotted decimal format.) For example, if you
enter an area-ID of
1, it appears in the switch’s configuration
as 0.0.0.1 and an area-ID of 256 appears in the switch
configuration as 0.0.1.0. An area ID can be a value selected to
match the IP address of a VLAN belonging to the area, or a
value corresponding to a numbering system you devise for the
areas in a given AS. Entering an area ID of
0 or 0.0.0.0
automatically joins the routing switch to the Backbone area.
The maximum area ID value is 255.255.255.254
(
4,294,967,294).
backbone: Assigns the routing switch to the backbone area and
automatically assigns an area ID of
0.0.0.0 and an area type of
normal. Using 0 or 0.0.0.0 with the above ospf-area-id option
achieves the same result. The backbone area is automatically
configured as a “normal” area type.
For example, to configure a backbone and a normal area with an ID of “1”
(0.0.0.1) on a routing switch:
ProCurve(ospf)# area backbone
ProCurve(ospf)# area 1
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