Alcatel-Lucent 6850-48 Reference Guide

OSPF Commands

page 41-24

OmniSwitch CLI Reference Guide

Creates a route summarization instance whereby a range of addresses assigned for the route at the area 
border router will be advertised.

ip ospf area area_id range {summary | nssa} ip_address subnet_mask 
[effect {admatching | noMatching}]

no ip ospf area area_id range {summary | nssa} ip_address subnet_mask 

A unique 32-bit value in IP address format.

Advertises the address range as a summary link state advertisement 
(LSA).

Advertises the address range of Not So Stubby Area (NSSA) routes as a 
Type 5 advertisement.

A 32-bit IP address for the range’s area.

A 32-bit subnet mask that determines how many bits of the IP address 
denote the network number.

Determines that routes specified falling within the specified range will 
be advertised.

Determines that any route falling within the specified range will not be 
advertised.

OmniSwitch 6850, 6855, 9000, 9000E

• Route summarization is the consolidation of addresses within an area which are advertised as a single 

route. When network numbers in an area are assigned consecutively, the area border router can be 
configured, using this command, to advertise a route that aggregates all the individual networks within 
the range.

• Using this command causes a single route to be advertised, for an address range in the specified area, to 

other areas.