1 © 2004, Cisco Systems, Inc. All rights reserved. Concepts on Single-Area OSPF
Concepts on Single-Area OSPF
Jan 03, 2016
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1 © 2004, Cisco Systems, Inc. All rights reserved.
Concepts on Single-Area OSPF
2 2 2 © 2004, Cisco Systems, Inc. All rights reserved.
Overview of Link-State and Distance Vector Routing
3 3 3 © 2004, Cisco Systems, Inc. All rights reserved.
Link-State Routing Features
4 4 4 © 2004, Cisco Systems, Inc. All rights reserved.
How Routing Information Is Maintained
5 5 5 © 2004, Cisco Systems, Inc. All rights reserved.
Link-State Routing Protocol Algorithms
6 6 6 © 2004, Cisco Systems, Inc. All rights reserved.
Advantages and Disadvantages of Link-State Routing
7 7 7 © 2004, Cisco Systems, Inc. All rights reserved.
OSPF Network Types
8 8 8 © 2004, Cisco Systems, Inc. All rights reserved.
OSPF Hello Protocol
9 9 9 © 2004, Cisco Systems, Inc. All rights reserved.
Steps in the Operation of OSPF
Discover neighbors
10 10 10 © 2004, Cisco Systems, Inc. All rights reserved.
Steps in the Operation of OSPF
Elect DR and BDR on Multi Access Network
11 11 11 © 2004, Cisco Systems, Inc. All rights reserved.
Basic OSPF Configuration
12 12 12 © 2004, Cisco Systems, Inc. All rights reserved.
Configuring OSPF Loopback Address and Router Priority
13 13 13 © 2004, Cisco Systems, Inc. All rights reserved.
Setting OSPF Priority
The priorities can be set to any value from 0 to 255. A value
of 0 prevents that router from being elected. A router with
the highest OSPF priority will win the election for DR.
14 14 14 © 2004, Cisco Systems, Inc. All rights reserved.
Modifying OSPF Cost Metric
15 15 15 © 2004, Cisco Systems, Inc. All rights reserved.
Configuring OSPF Authentication
16 16 16 © 2004, Cisco Systems, Inc. All rights reserved.
Configuring OSPF Timers
17 17 17 © 2004, Cisco Systems, Inc. All rights reserved.
Verifying OSPF Configuration
• show ip protocol
• show ip route
• show ip ospf interface
• shop ip ospf
• show ip ospf neighbor detail
• show ip ospf database
18 18 18 © 2004, Cisco Systems, Inc. All rights reserved.
The debug and clear Commands for OSPF Verification
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