How to configure EIGRP routing [easily] #65746

How to configure EIGRP routing [easily]

1. EIGRP Theory

Now, this time i want to share about how to configuraion EIGRP in cisco router. EIGRP (Enhanced Interior Gateway Routing Protocol) is a protocol that is solely owned by Cisco or termed proprietary to Cisco, which is EIGRP neighbor can only be used cisco routers. EIGRP uses delay calculation and metrics for calculating the value corresponding to a route. Differences EIGRP to OSPF one of them did not perform route calculations such as those performed by the link-state protocol. It makes EIGRP does not require extra design (area 0 as done by OSPF), it makes EIGRP does not do the calculations and save in the process and memory. EIGRP process in which only sends network updates some of the latest network information. There is also a weakness of EIGRP, the EIGRP only be done by one vendor, so it will be difficult in a different router vendors. EIGRP also known as hybriddistance-vector routing protocol, EIGRP supports distance vector algorithms (performed by RIP) and link state (OSPF). For the calculation to determine the shortest path algorithm EIGRP uses DUAL (Diffusing Update Algorithm)

2. The table in EIGRP
There are 3 tables EIGRP in storing network information, including:

A. Neighboring table: This table maintains a list of neighboring routers. Every new router installed (new network), IP address and interface directly be recorded in this table.

B. Topology table: table is made to meet the needs of the routing table in an autonomous system (AS)> (AS - a network grouping set in the operator network). DUAL took tissue from the neighboring table and topology table to calculate cost Stop router to each destination.

C. Routing table: the best routes to the destination. The information is retrieved topology table to see a list of the topology table and selected the best. EIGRP will send hello packets to determine whether neighboring routers are still active or not. Shipping hello package is simultaneous, the hello packets are possessed hold time, when the hold time within a neighboring router does not respond, then the router is considered inactive. Hello packets are sent to a multicast IP address 224.0.0.10. Internal Route: routes originating from within an autonomous system of routers using EIGRP routing protocol, which is a member of the autonomous system is having administrative distance (the value of the trust relationship another routing protocol, the smaller the value, the more reliable AD ) from the same EIGRP autonomous system and has the same. Administrative distance is different, better redistribution (the distribution) manually or automatically

3. EIGRP Package Type
EIGRP has be some type of package are as follows:

A. Hello: for maintenance, look for the neighboring router.
B. Acknowladge: hello packets that the data fiednya 0
C. Update: the package used to deliver the change router
D. Query: packets sent by the router to request information to other routers on the route
E. Reply: reply to a query packet

4. Simulation EIGRP using Packet Tracer 5.3.3
[download pkt file EIGRP configuraion HERE]

R1 (config) # router eigrp 10
R1 (config-router) # network 20.0.0.0
R1 (config-router) # network 140.140.140.0
R1 (config-router) # network 200.200.200.0

R2 (config) # router eigrp 10
R2 (config-router) # network 198.100.100.0
R2 (config-router) # network 140.140.140.0
R2 (config-router) # network 10.10.10.0

R3 (config) # router eigrp 10
R3 (config-router) # network 10.10.10.0
R3 (config-router) # network 150.140.0.0
R3 (config-router) # network 7.7.7.0

R4 (config) # router eigrp 10
R4 (config-router) # network 135.135.0.0
R4 (config-router) # network 200.200.200.0
R4 (config-router) # network 7.7.7.0

Ping to 135.135.135.2 from 150.140.140.2
PC> ping 135.135.135.2

Pinging 135.135.135.2 with 32 bytes of data:

Reply from 135.135.135.2: bytes = 32 time = 94ms TTL = 126
Reply from 135.135.135.2: bytes = 32 time = 94ms TTL = 126
Reply from 135.135.135.2: bytes = 32 time = 63ms TTL = 126
Reply from 135.135.135.2: bytes = 32 time = 94ms TTL = 126

Ping statistics for 135.135.135.2: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds:
Minimum = 63ms, Maximum = 94ms, Average = 86ms

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