CCNP

What is EIGRP And How It Works

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eigrp example

Let’s do some routing and we are getting started with EIGRP : Enhanced Interior Gateway Routing Protocol. First we need to answer the question “what is eigrp” ? EIGRP is a dynamic routing protocol and provides us some great features. It uses “DUAL” algorithm to find the best path which is found by Dr. J.J. Garcia-Luna […]

CCNP

Step By Step EIGRP Configuration Example

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eigrp configuration

After overview of EIGRP , it is time to take a look at EIGRP configuration. EIGRP configuration is really awesome and not so hard if you compare with OSPF or etc. Let’s take a look to figure below and configure this topology via EIGRP step by step. Configure the network above with EIGRP using Autonomous system number 90. Use […]

CCNP

EIGRP Stub And Summary Routes Explained

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eigrp stub

Now it is time to check “EIGRP Stub” and design options of EIGRP. BB#debug ip eigrp packets BB#debug ip eigrp query BB#debug ip eigrp reply When primary route fails, EIGRP automatically switches to the backup route. If the rule ” AD < Successor’s FD ” fails, query messages are sent. In the query message, it […]

CCNA

What Is Router ?

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router

Router is a network device which provides ip routing according to its routing table. Routing table is the table, where the best routes to the destination networks appear. Router checks the source and destination addresses of the packet and sends it to receiver via dynamic ip routing protocols or static routes. Static route is the […]