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EIGRP

EIGRP metric manipulation

EIGRP is the most complex metric between all routing protocols metrics, in this post we are trying to clear the calculation of this metric as much as possible. Lets begin.. EGIRP metric is a composite metric made up of 5 parameters listed as follows: Bandwidth. Delay. Load. Reliability. MTU. All …

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EIGRP timers (hello, hold and active)

Today at work I have run into troubleshooting an EIGRP problem with one of our customers; while troubleshooting this problem I started making every optimization I know about EIGRP. In this post I am sharing with you EIGRP timers I adjusted in order to clear up the problem. Hello interval …

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Passive-interface command behavior in RIP, EIGRP & OSPF

Passive-interface command is used in all routing protocols to disable sending updates out from a specific interface. However the command behavior varies from o­ne protocol to another. In RIP this command will disable sending multicast updates via a specific interface but will allow listening to incoming updates from other RIP …

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Automatic summarization in RIP and EIGRP

Summarization in RIP and EIGRP can be configured manually using the ip summary-address command or automatically using auto-summary command. when auto summarization is in effect routers behave as shown in the steps below: Subnets are summarized to their classful boundary before being sent to neighbors if they are not part …

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