How to Configuring EIGRP Route Summarization

If you have completed Lab 7-8--Summary configure RIP routing, then you should have a basic understanding of how to route summarization of engineering. If you weren't summed up; it's basically your subnet on which different subnets to form a single larger subnets to obtain the advertisement to the neighboring routers to save on router resources operations. For example, if you advertise 22 covers four 24 subnetted network, then you are effectively cutting of neighboring routers resources 75%; in this case, the upstream router with a single 22 routes instead of four, four routed to the same location.

EIGRP configuration summary address almost on the same order as for a per-interface basis using the RIP configuration summary addresses but with minor differences. When EIGRP configured on an interface a summary EIGRP summary addresses you will use the IP address as the #n.n.n.n s.s.s.s.s command, and RIP IP addresses summary RIP n.n.n.n s.s.s.s

Another benefit of using summary routes (aka: routing aggregation) is that if a single route is down the Hill contains a simple route, don't send updated throughout the entire routing domain. Summary route will know more about the course router advertisements. EIGRP, which prevents unnecessary queries and potential SIA EIGRP autonomous system.

In this lab, you will be in four new loopback interface configured on R1 summary and configuration on router R1 advertise a hub and spoke frame relay interface, as well as the R2 point-to-point interfaces.

Familiarize yourself with the following new commands;

Step 1: Four new loopback interface is configured on the R1 uses the 4-7 number, 10.122.4.0/22 configured for the interface IP address ranges. Tip: the 3rd byte interface number.

Step 4: Verify, view the routing table on the R5: he is spreading incorrect summary speech.

R5>show ip route
Codes: 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

Gateway of last resort is not set

     10.80.0.0/8 is variably subnetted, 13 subnets, 5 masks
C       10.80.50.0/24 is directly connected, Loopback0
D       10.80.40.0/24 [90/2297856] via 10.80.45.1, 01:43:54, Serial0/1
D       10.80.23.1/32 [90/3705856] via 10.80.45.1, 01:43:54, Serial0/1
D       10.80.23.0/30 [90/3705856] via 10.80.45.1, 01:43:54, Serial0/1
D       10.80.23.2/32 [90/3705856] via 10.80.45.1, 01:43:54, Serial0/1
D       10.80.30.0/24 [90/3321856] via 10.80.45.1, 01:43:54, Serial0/1
C       10.80.45.1/32 is directly connected, Serial0/1
C       10.80.45.0/30 is directly connected, Serial0/1
D       10.80.20.0/24 [90/3321856] via 10.80.45.1, 01:43:54, Serial0/1
D       10.80.10.0/24 [90/2809856] via 10.80.45.1, 01:43:54, Serial0/1
C       10.50.0.0/24 is directly connected, Loopback5
D       10.122.4.0/22 [90/2809856] via 10.80.45.1, 00:05:37, Serial0/1
D       10.80.234.0/29 [90/2681856] via 10.80.45.1, 01:43:55, Serial0/1
R5>