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Protocol Redistribution EIGRP and OSPF route

 Find below the configurations for route redistribution between OSPF and EIGRP LAB.   R1 configurations: configure terminal interface serial 1/1 ip address 4.1.1.2 255.0.0.0 no shut interface serial 1/0 ip address 1.1.1.1 255.0.0.0 no shut interface fastethernet 0/0 ip address 200.100.50.100 255.255.255.0 no shut router ospf 11 network 1.0.0.0 0.255.255.255 area 0 network 4.0.0.0 0.255.255.255 area 0 network 200.100.50.0 0.0.0.255 area 0 network 200.100.200.0 0.0.0.255 area 0 redistribute eigrp 10 subnets exit router eigrp 10 redistribute ospf 11 metric 1 1 1 1 1 R2 configurations: configure terminal interface serial 1/0 ip address 1.1.1.2 255.0.0.0 no shut interface serial 1/1 ip address 2.1.1.1 255.0.0.0 no shut interface fastethernet 0/0 ip address 200.100.100.100 255.255.255.0 no shut router ospf 11 network 1.0.0.0 0.255.255.255 area 0 network 4.0.0.0 0.255.255.255 area 0 network 200.100.50.0 0.0.0.255 area 0 network 200.100.200.0 0.0.0.255...

DR and BDR selection Lab

 #ospf #protocol #configuration #lab #DR #BDR Lab objectives: Ensure router R1 is the DR for network 100.1.1.0 /24. Ensure router R3 is the BDR for network 100.1.1.0 /24. Ensure router R5 is the DR for network 100.1.2.0 /24. without changing the priority Ensure router R2 is the BDR for network 100.1.2.0 /24. You are not allowed to change the priority. Solution configurations: R1: conf t int fa 0/0 ip address 100.1.1.2 255.255.255.0 no shutdown exit router ospf 10 network 100.1.1.0 0.0.0.255 area 0 network 100.1.2.0 0.0.0.255 area 0 log-adjacency-changes conf t router ospf 10 log-adjacency-changes exit exit R2: the solution to achieve all objectives: change priority of R1 must be higher than R3 change priority of R2 must be lower than R1 change router-id manually to higher router ID 120.120.120.2 

What Is OSPF?

  Overview of OSPF Definition The Open Shortest Path First (OSPF) protocol, developed by the Internet Engineering Task Force (IETF), is a link-state Interior Gateway Protocol (IGP). At present, OSPF Version 2, defined in RFC 2328, is intended for IPv4, and OSPF Version 3, defined in RFC 2740, is intended for IPv6. Unless otherwise stated, OSPF stated in this document refers to OSPF Version 2. The following describes OSPF fundamentals, and basic OSPF function configuration. Understanding OSPF OSPF Fundamentals Router ID A router requires a router ID if it is to run OSPF. A router ID is a 32-bit unsigned integer, uniquely identifying a router in an AS. A router ID can be manually configured or automatically selected by a router: It is recommended that you manually configure a router ID to ensure OSPF stability. If no router ID is manually configured for a router, the router selects an interface IP address as its router ID. A router selects its router ID based on the following rules: ...