Internal Routing Protocols (Part 2): Advanced EIGRP Configuration

Topology

Objectives

• 1. configure frame-relay and IP address as per the topology

1. Configure the routing protocol as the the topology

2. Redistribute Rip into EIGRP on router 4 (metric 1500 0 255 1 1500). On R4 network 155.155.2.0 and network 155.155.3.0 cannot be advertised in EIGRP domain (hint routemap)

3. Redistribute OSPF and EIGRP on R5 and R2 fully in both direction with loop protection. make sure R1 prefers R5 for the external routes.ct

4. Make sure R5 and R4 do not learn EIGRP external routes as OSPF external routes.(hint distance)

5. Make sure R5 lo network is not learnt as EIGRP external route by R2(hint 

6. summarize 155.155.0.0 networks on router 1

Potential issues

Split Horizon on router 1 multipoint port

interface Serial0/0.1235 multipoint

 no ip split-horizon eigrp 500

routing loop between R2 and R5 (hint

see solution 4

Solution 1

Router 1

interface FastEthernet0/0

 ip address 170.100.10.1 255.255.255.0

interface Serial0/0

 no ip address

 encapsulation frame-relay

interface Serial0/0.14 point-to-point

 ip address 170.100.200.1 255.255.255.252

 frame-relay interface-dlci 104

interface Serial0/0.1235 multipoint

 ip address 170.100.100.1 255.255.255.0

 frame-relay map ip 170.100.100.2 102 broadcast

 frame-relay map ip 170.100.100.3 103 broadcast

 frame-relay map ip 170.100.100.5 105 broadcast

Router 2

interface FastEthernet0/0

 ip address 170.100.2.1 255.255.255.0

interface Serial0/0

 ip address 170.100.100.2 255.255.255.0

 encapsulation frame-relay

 frame-relay map ip 170.100.100.1 201 broadcast

interface FastEthernet0/1

Router 3

interface FastEthernet0/0

 ip address 170.100.3.1 255.255.255.0

interface Serial0/0

 ip address 170.100.100.3 255.255.255.0

 encapsulation frame-relay

 frame-relay map ip 170.100.100.1 301 broadcast

Router 4

interface Loopback0

 ip address 155.155.0.1 255.255.255.0

interface Loopback1

 ip address 155.155.1.1 255.255.255.0

interface Loopback2

 ip address 155.155.2.1 255.255.255.0

interface Loopback3

 ip address 155.155.3.1 255.255.255.0

interface Loopback4

 ip address 155.155.4.1 255.255.255.0

interface Loopback5

 ip address 155.155.5.1 255.255.255.0

interface FastEthernet0/0

 ip address 170.100.4.1 255.255.255.0

interface Serial0/0

 ip address 170.100.200.2 255.255.255.252

 encapsulation frame-relay

 frame-relay map ip 170.100.200.1 401 broadcast

Router 5

interface Loopback0

 ip address 170.100.50.5 255.255.255.0

interface FastEthernet0/0

 ip address 170.100.2.5 255.255.255.0

interface Serial0/0

 ip address 170.100.100.5 255.255.255.0

 encapsulation frame-relay

 frame-relay map ip 170.100.100.1 501 broadcast

Solution 2

Router 1

router eigrp 500

 network 170.100.10.1 0.0.0.0

 network 170.100.100.1 0.0.0.0

 network 170.100.200.1 0.0.0.0

Router 2

eigrp 500

network 170.100.100.2 0.0.0.0

router ospf 1

router-id 2.2.2.2

network 170.100.2.1 0.0.0.0 area 0

Router 3

router eigrp 500

 network 170.100.3.1 0.0.0.0

 network 170.100.100.3 0.0.0.0

Router 4

 eigrp 500

 network 170.100.200.0 0.0.0.255

 auto-summary

Router 5

router eigrp 500

 network 170.100.100.5 0.0.0.0

router ospf 1

 router-id 5.5.5.5

 network 170.100.2.5 0.0.0.0 area 0

 network 170.100.50.5 0.0.0.0 area 0

Solution 3

Router 4

access-list 1 deny   155.155.2.0

access-list 1 deny   155.155.3.0

access-list 1 permit any

!

route-map RIP_2_EIGRP permit 10

 match ip address 1

router eigrp 500

redistribute rip metric 1500 0 255 1 1500 route-map RIP_2_EIGRP

Solution 4

Router 2

router eigrp 500

 redistribute ospf 1 metric 1500 0 255 1 1500 match internal

 network 170.100.2.1 0.0.0.0

 network 170.100.100.2 0.0.0.0

alias exec ssre show run | section router eigrp

router ospf 1

 router-id 2.2.2.2

 redistribute eigrp 500 metric 600000 subnets

 network 170.100.2.1 0.0.0.0 area 0

Router 5

router eigrp 500

 redistribute ospf 1 metric 3000 0 255 1 1500 match internal

 network 170.100.100.5 0.0.0.0

alias exec ssre show run | section router eigrp

router ospf 1

 router-id 5.5.5.5

 redistribute eigrp 500 metric 500000 subnets

 network 170.100.2.5 0.0.0.0 area 0

 network 170.100.50.5 0.0.0.0 area 0

Solution 5

Router 5 and Router 2

router ospf 1

 distance ospf external 175

Solution 6

interface Serial0/0.1235 multipoint

 ip summary-address eigrp 500 155.155.0.0 255.255.0.0 5