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IP Routing Features
Configuring OSPF
Not e This feature applies only when the Series 5300XL Switch is configured as an
Area Border Router (ABR) for the area. To completely prevent summary LSAs
from being sent to the area, disable the summary LSAs on each OSPF router
that is an ABR for the area.
To disable summary LSAs for a stub area, enter commands such as the
following:
HPswitch(config-ospf-router)# area 40 stub 3 no-summary
Syntax: area <num> | <ip-addr> [stub <cost> [no-summary]]
The <num> | <ip-addr> parameter specifies the area number, which can be a
number or in IP address format. If you specify a number, the number can be
from 0 – 4,294,967,295.
The <cost> specifies the cost of the default route to be injected into the stub
area, if this routing switch is an ABR. The value can be from 1 – 16777215. If
you configure a stub area, you must specify the cost. There is no default.
Normal areas do not use the cost parameter.
The no-summary parameter applies only to stub areas and disables summary
LSAs from being sent into the area.
Not e You can assign subnets individually to areas. The limit on the number of areas
is 16.
Assigning an Area Range (optional)
You can assign a range for an area, but it is not required. Ranges allow a
specific IP address and mask to represent a range of IP addresses within an
area, so that only that reference range address is advertised to the network,
instead of all the addresses within that range. Each area can have up to 8 range
addresses.
Example. To define an area range for sub-nets on 193.45.5.1 and 193.45.6.2,
enter the following commands:
HPswitch(config)# router ospf
HPswitch(ospf)# area 192.45.5.1 range 193.45.0.0
255.255.0.0
HPswitch(ospf)# area 193.45.6.2 range 193.45.0.0
255.255.0.0
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