Implementing OSPF

To implement OSPF in your network:

• Map out the AS including routers, network subnets, and the areas to which they belong
• Configure each routing interface on each router with an IP address and mask
• Create an OSPF routing instance for this AS
• Configure the network addresses, masks, and areas for each router in the AS
• Configure each router with a router ID
• Optionally determine which router will be the designated router and backup and configure OSPF priority values accordingly
• Optionally configure OSPF timers
• Optionally, configure the protocols and route types that will be redistributed over this AS
• Optionally configure interface cost
• Optionally modify the administrative distance for OSPF routes
• Optionally configure either simple or MD5 authentication per interface
• Optionally configure areas including virtual-links, stub, and NSSA
• Optionally enable graceful-restart
• Optionally enable the BFD protocol on all OSPF interfaces (S-, K-Series)
• Optionally enable the PE-CE protocol on the router, with PE-CE enabled
  • Optionally, configure a domain tag for this router
  • Optionally, configure a primary or secondary domain ID for this router
  • Optionally redistribute BGP discovered routes over OSPF (S-, 7100-Series)