Configure Address Range Aggregation

This example configures address range aggregation in SEFOS8 as AS-external.

1. Enter Global Configuration mode in SEFOS8.

   SEFOS# configure terminal
   

2. Enable OSPF globally in SEFOS8.

   SEFOS(config)# ipv6 router ospf
   

3. Configure the OSPF router ID.

   SEFOS(config-router)# router-id 10.0.0.8
   

4. Configure the router as an ASBR router.

   SEFOS(config-router)# asbr router
   SEFOS(config-router)# redistribute static
   SEFOS(config-router)# exit
   

5. Add static routes.

   SEFOS(config)# ipv6 route 3333::2222:0:0 96 fec0::2856:0:1
   SEFOS(config)# ipv6 route 3333::4444:0:0  96 fec0::2886:0:10
   

6. View the database.

   SEFOS# show ipv6 ospf database as-external detail
    
   Age: 0   Seconds            LS Type: External Lsa
   Link State Id: 0.0.0.1      Adv Rtr Id: 10.0.0.8
   Sequence: 0x80000001        Checksum: 0x593a    Length: 56
   Metric Type: Ext Type2      Metric: 0xa
   Prefix Length: 96            Prefix Options: 0x00
   Referenced LS Type: 0
   Addres Prefix: 3333::2222:0:0
   Fw Addres Prefix: 3333::2222:fec0:0
   External Route Tag: 0
    
   Age: 0   Seconds            LS Type: External Lsa
   Link State Id: 0.0.0.2      Adv Rtr Id: 10.0.0.8
   Sequence: 0x80000001        Checksum: 0x1f80    Length: 40
   Metric Type: Ext Type2      Metric: 0xa
   Prefix Length: 96            Prefix Options: 0x00
   Referenced LS Type: 0
   Addres Prefix: 3333::4444:0:0
   Fw Addres Prefix: 3333::4444:0:0
   External Route Tag: 0
   

7. Configure the entire summary for this 3333:: address range.

   SEFOS(config-router)# area 0.0.0.0 summary-prefix 3333::  64 advertise
   

8. View the configuration results in SEFOS8.

   SEFOS# show ipv6 ospf database as-external detail
    
   Age: 3   Seconds            LS Type: External Lsa
   Link State Id: 0.0.0.3      Adv Rtr Id: 10.0.0.8
   Sequence: 0x80000001        Checksum: 0xb496    Length: 36
   Metric Type: Ext Type2      Metric: 0xa
   Prefix Length: 64           Prefix Options: 0x00
   Referenced LS Type: 0
   Addres Prefix: 3333::
   Fw Addres Prefix: 3333::
   External Route Tag: 0