System information

BSR 64000 Configuration and Management Guide
11-10
• Use the area range not-advertise command in Router Configuration mode to
specify an address range for a single route that is not advertised, as shown below:
MOT(config-ospf)#area <area-id> range <ip-address> <mask> not-advertise
where:
area-id is the number or IP address for the area.
ip-address is the IP address for an individual network within the area.
mask is the subnet mask for the address.
not-advertise indicates do not advertise the range.
Example
This example configures an ABR to summarize the aggregate range 1.1.0.0/16.
ip address 2.2.10.1 255.255.255.0
ip address 2.1.11.1 255.255.255.0
router ospf
network 2.2.0.0 0.0.255.255 area 0
area 0 range 2.2.0.0 255.255.0.0
Configuring Route Summarization into OSPF Area
When redistributing routes from other protocols into OSPF, each route is advertised
individually in an external LSA. However, you can configure the software to advertise
a single route for all the redistributed routes that are covered by a specified network
address and mask. Doing so helps decrease the size of the OSPF link state database
and the routing table.
To specify an IP address and mask that covers redistributed routes so that only one
summary route is advertised, use the summary-address command in Router
Configuration mode, as shown below:
MOT(config-ospf)#summary-address <ip-address> <mask> tag <tag-value>
where:
ip-address is the IP summary address.
mask is the IP summary address subnet mask.