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You are here: Home → White Papers → EIGRP Stub
White Papers

EIGRP Stub

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White Papers

EIGRP Stub

Download PDF

EIGRP Stub

RST Forum White Paper

 

LAB11: EIGRP – IPv4

Disclaimer

This Configuration Guide is designed to assist members to enhance their skills in respective technology area. ​​ While every effort has been made to ensure​​ that all material is as complete and accurate as possible, the enclosed material is presented on an “as is” basis. ​​ Neither the authors nor Forum assume any liability or responsibility to any person or entity with respect to loss or damages incurred from​​ the information contained in this guide. This Lab Guide was developed by RSTForum. ​​ Any similarities between material presented in this configuration guide and any other material is completely coincidental.

LAB 11: Diagram

Note: This Lab was developed on Cisco IOS Version15.2(4) M1 ADVENTERPRISEK9-M.

 

 

 

LAB 11: EIGRP Stub

 

Task 1: Configure EIGRP Stub

 

  • In the configuration mode of router configure loopbacks with network address in sequence.

 

R1:

interface loopback 1

ip address 11.0.1.1 255.255.255.0

exit

interface loopback 2

ip address 11.0.2.1 255.255.255.0

exit

interface loopback 3

ip address 11.0.3.1 255.255.255.0

exit

 

  • Configure EIGRP stub with connected option

 

R1:

router eigrp 100

eigrp stub ?  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

connected  ​​ ​​ ​​​​  ​​ Do​​ advertise connected routes  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

leak-map  ​​ ​​ ​​ ​​ ​​​​  Allow dynamic prefixes based on the leak-map  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

receive-only  ​​​​  Set receive only neighbor  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

redistributed ​​  Do advertise redistributed routes  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

static  ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  Do advertise static routes  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

summary  ​​ ​​ ​​ ​​ ​​ ​​​​  Do advertise summary routes​​ 

 ​​​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

eigrp stub connected

exit

 

(EIGRP Stub router will do advertise its connected routes to the neighbor router.)

 

  • Configure EIGRP stub with connected static option

 

R1:

router eigrp 100

eigrp stub static

exit

 

(EIGRP​​ Stub router will do advertise static routes.)

 

 

  • Configure EIGRP stub with receive only option

R1:

router eigrp 100

eigrp stub receive-only

exit

 

(EIGRP Stub router will only receive routes from its neighbor but will not advertise any routes to its neighbor.)

 

 

Task 2: ​​ Verification:

 

  • Verify route in neighbors router routing table by following command:

 

R2#show ip route

 

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

 ​​ ​​ ​​ ​​ ​​ ​​​​ D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF​​ inter area

 ​​ ​​ ​​ ​​ ​​ ​​​​ i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

 ​​ ​​ ​​ ​​ ​​ ​​​​ ia - IS-IS inter area, * - candidate default, U - per-user static route

 ​​ ​​ ​​ ​​ ​​ ​​​​ o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

 ​​ ​​ ​​ ​​ ​​ ​​​​ + -​​ replicated route, % - next hop override

 

Gateway of last resort is not set

 ​​ ​​ ​​ ​​ ​​​​ 12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 12.0.0.0/24 is directly connected, Serial2/0

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 12.0.0.2/32 is directly connected, Serial2/0

 ​​ ​​ ​​ ​​ ​​​​ 22.0.0.0/8 is variably subnetted, 6 subnets, 2 masks

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.1.0/24 is directly connected, Loopback1

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.1.2/32 is directly connected, Loopback1

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.2.0/24 is directly connected, Loopback2

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.2.2/32 is directly connected, Loopback2

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.3.0/24 is directly connected, Loopback3

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.3.2/32 is directly connected, Loopback3

 ​​ ​​ ​​ ​​ ​​​​ 23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 23.0.0.0/24 is directly connected, Ethernet0/0

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 23.0.0.2/32 is directly connected, Ethernet0/0

 ​​ ​​ ​​ ​​ ​​​​ 33.0.0.0/24 is subnetted, 3 subnets

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 33.0.1.0 [90/409600] via 23.0.0.3, 01:39:35, Ethernet0/0

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 33.0.2.0 [90/409600] via 23.0.0.3, 01:39:35, Ethernet0/0

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 33.0.3.0 [90/409600] via 23.0.0.3, 01:39:35,​​ Ethernet0/0

 ​​ ​​ ​​ ​​ ​​​​ 34.0.0.0/24 is subnetted, 1 subnets

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 34.0.0.0 [90/2195456] via 23.0.0.3, 01:39:32, Ethernet0/0

 ​​ ​​ ​​ ​​ ​​​​ 44.0.0.0/24 is subnetted, 3 subnets

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 44.0.1.0 [90/2323456] via 23.0.0.3, 01:39:35, Ethernet0/0

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 44.0.2.0 [90/2323456] via 23.0.0.3, 01:39:35, Ethernet0/0

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 44.0.3.0 [90/2323456] via 23.0.0.3, 01:39:35, Ethernet0/0

(Router R2 will not receive 11 network from Stub router because Stub router will only receive and will not advertise its own 11 network to Router R2.)

 

 

  • Configure no auto summary and verify routes on neighbor router routing table

 

R1:

router eigrp 100

no auto-summary

exit

 

 

R2#show ip route

 

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP

 ​​ ​​ ​​ ​​ ​​ ​​​​ D - EIGRP, EX - EIGRP​​ external, O - OSPF, IA - OSPF inter area

 ​​ ​​ ​​ ​​ ​​ ​​​​ N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

 ​​ ​​ ​​ ​​ ​​ ​​​​ E1 - OSPF external type 1, E2 - OSPF external type 2

 ​​ ​​ ​​ ​​ ​​ ​​​​ i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

 ​​ ​​ ​​ ​​ ​​ ​​​​ ia - IS-IS inter area, * - candidate default, U - per-user static route

 ​​ ​​ ​​ ​​ ​​ ​​​​ o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP

 ​​ ​​ ​​ ​​ ​​ ​​​​ + - replicated route, % - next hop override

 

Gateway of last resort is not set

 

 ​​ ​​ ​​ ​​ ​​​​ 12.0.0.0/8 is​​ variably subnetted, 2 subnets, 2 masks

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 12.0.0.0/24 is directly connected, Serial2/0

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 12.0.0.2/32 is directly connected, Serial2/0

 ​​ ​​ ​​ ​​ ​​​​ 22.0.0.0/8 is variably subnetted, 6 subnets, 2 masks

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.1.0/24 is directly connected, Loopback1

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.1.2/32 is directly connected, Loopback1

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.2.0/24 is directly connected, Loopback2

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.2.2/32 is directly connected, Loopback2

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.3.0/24 is directly connected, Loopback3

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 22.0.3.2/32 is directly connected, Loopback3

 ​​ ​​ ​​ ​​ ​​​​ 23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C  ​​ ​​ ​​ ​​ ​​ ​​​​ 23.0.0.0/24 is directly connected, Ethernet0/0

L  ​​ ​​ ​​ ​​ ​​ ​​​​ 23.0.0.2/32 is directly connected, Ethernet0/0

 ​​ ​​ ​​ ​​ ​​​​ 33.0.0.0/24 is subnetted, 3 subnets

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 33.0.1.0 [90/409600] via 23.0.0.3, 01:39:35, Ethernet0/0

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 33.0.2.0 [90/409600] via 23.0.0.3, 01:39:35, Ethernet0/0

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 33.0.3.0 [90/409600] via 23.0.0.3, 01:39:35, Ethernet0/0

 ​​ ​​ ​​ ​​ ​​​​ 34.0.0.0/24 is subnetted, 1 subnets

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 34.0.0.0 [90/2195456] via 23.0.0.3, 01:39:32, Ethernet0/0

 ​​ ​​ ​​ ​​ ​​​​ 44.0.0.0/24 is subnetted, 3 subnets

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 44.0.1.0 [90/2323456] via 23.0.0.3, 01:39:35, Ethernet0/0

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 44.0.2.0 [90/2323456] via 23.0.0.3, 01:39:35, Ethernet0/0

D  ​​ ​​ ​​ ​​ ​​ ​​​​ 44.0.3.0 [90/2323456] via 23.0.0.3, 01:39:35,​​ Ethernet0/0

 

 

 

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