Aaron's Worthless Words

Sign in Subscribe

eigrp

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

ROUTE Notes - More IGP Redistribution

As always, feel free to correct. Study Notes * When a router redistributes from one routing protocol to another, where does the router get the list of routes to redistribute? From the routing table. Only IGP A’s routes (not topology or successors) are redistributed into IGP B’s domain. * What

ROUTE Notes - IGP Redistribution

As always, feel free to correct. Study Questions * When you redistribute OSPF into EIGRP, what are you really redistributing? Routes knows via OSPF Networks of OSPF-enabled interfaces * What’s the default cost of an EIGRP route redistributed into OSPF? 20 * What’s the default metric of an OSPF route redistributed

ROUTE Notes - Controlling Routes in EIGRP

Corrections welcome. Study Questions * Why would you ever want to summarize routes? Summarizing routes minimizes the routes advertised to the network. For example, instead of advertising 192.168.0.0/24, 192.168.1.0/24…192.168.n.0/24, a router can advertise a single route to 192.