CCNA Chapter 9

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What are the 3 conditions that must be met for EIGRP to establish a neighborship?
- Hellos received
- AS numbers match
- Identical metrics (k value)
How do you set up EIGRP on a router?
- R1# config t
- R1(config)#router eigrp autonomous system number ex. 10
- R1(config-router)#network "network number"
How do you set up OSPF on a router?
- R1#config t
- R1(config)#router ospf "process ID" <0-65535>
- R1(config-router)#network 192.168.10.0 0.0.0.255 area 0
Wild cards start with 0's on the left. reverse of subnet masks.
With OSPF how does the router decide it's RID (Router ID)?
- The router uses the highes active IP address for the RID.
- The RID is used to advertise the routes ans well as elect the DR and BDR.
- Highest active interface by default
- Highest logical address will over ride a physical interface
- The router-id overrides the interface and loopback interfaces
How do you manually set the RID with OSPF on a router?
- R1#config t
- R1(config)#router ospf 10
- R1(config-router)#router-id "ip addres" (172.123.10.5)