User Manual

NETGEAR M4500 Series Switches CLI Command Reference Manual 690
Mode Router OSPF Config
6.3.2.13. area range
area range command configures a summary prefix that an area border router (ABR) advertises for a specified
area.
Format area <areaid> range <ipaddr> <subnetmask> {summarylink | nssaexternallink} [advertise [cost <0-
16777215>] | not-advertise | [cost <0-16777215>]]
no area <areaid> range <ipaddr> <subnetmask> {summarylink | nssaexternallink} [advertise | not-
advertise | cost]
Default None
Mode Router OSPF Config
Fields
Definition
areaid
The aread identifier for the area whose networks are to be summarized.
ipaddr subnetmas
The summary prefix to be advised when the ABR computes a route to one or
more networks within this prefixe in this area.
summarylink
When this keyword is configured, the area range is used when summarizing
prefixes advertised in type 3 summary LSAs.
nssaexternallink
When this keyword is configured, the area range is used when translating type 7
LSAs to type 5 LSAs.
advertise
When this keyword is configured, the summary prefix is advertised when the area
range is active. This is the default action.
not-advertise
When this keyword is configured, neither the summary prefix nor the contained
prefixes are advertised when the are range is active. When this not-advertise
option is given, any static cost previously configured is removed from the system
configuration.
cost
When this cost is configured, OSPF sets the metric field in the summary LSA to
the configured value rather than setting the metric to the largest cost among the
networks covered by the area range. If the cost is set to 16777215 for type 3
summarization, a type 3 summary LSA is not advertised but contained network
are suppressed. This behavior is equivalent to specifying the not-advertise
option. If the range is configured for type 7 to type 5 translation, a type 5 LSA is
sent if the metric is set to 16777215; however, other routers will not compute a
route from a type 5 LSA with this metric.