Aaron's Worthless Words

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redistribution

EIGRP Redistribution - Default Metrics of Connected and Static Routes

I wanted to do some analysis of the EIGRP topology table last night, so I fired up a small lab. I was especially interested in how external routes appear there and compare to internal entries. Like all good scientific endeavors, the whole thing got derailed when I made a realization.

Redistribution Notes - AD Manipulation

* Manipulating administrative distance (AD) is another way to help with a mutual redistribution scenario. * EIGRPs has different ADs for internal and external (redistributed) routes * OSPF and RIP have the same AD no matter where the route orginated. * This means that routes redistributed into OSPF may be used instead of a

Redistribution Notes - Tagging

* Tagging provides a way to mark common or similar routes to manipulate later. * In redistribution scenarios with mutual redistribution on two different routers, any routes that gets redistributed from one route process to another are tagged. * When the other router sees those tags on the route, that route to keep

Tagging External Routes in EIGRP

EIGRP allows you to tag external routes. That is, any route redistributed into EIGRP can be tagged with a numeric descriptor from 0 to 4294967295. These tags are carried throughout the EIGRP AS, so, with some planning and documentation, you can look at any route on any router and get

ROUTE Notes - Further IGP Redistribution

As always, corrections are requested. Study Questions * I’ve got IGRP and EIGRP both configured with the same AS number. What’s special about this configuration? If both use the same AS number, then they automatically redistribute their routes into each other without using the redistribute command. * When redistributing one

ROUTE Notes - Even More IGP Redistribution

I didn’t do so well on IGP redistribution the last time out, so here’s some more stuff to study. As always, feel free to correct. Study Questions * What three things are needed to be able to redistribute one routing protocol into another? 1. One or more links into

ROUTE Notes - Routing IPv6

Study Questions * Why would anyone develop a version of RIP that supports IPv6? I have no idea. Boredom, maybe. Whatever the case, it works just like RIPv2, which is pretty scary. * In EIGRP for IPv4, there are several requirements for two routers to neighbor up. Which of those is not