EIGRP Notes – Message Types

Please correct if I’m being stupid…which is a lot of the time.

Hello : Discovers and maintains neighbors

Update : An update to the topology such as a route withdrawal or a metric change

Query : Used to ask a neighbor if it has a route to a certain network; see casino online for free stuck-in-active

Reply : Sent in response to a query message telling a router whether or not it has a route

Ack : Used to acknowledge updates, queries, replies

Aaron Conaway

I shake my head around sometimes and see what falls out. That's what lands on these pages.

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2 comments for “EIGRP Notes – Message Types

  1. steven iveson
    December 12, 2011 at 6:57 pm

    I know it’s rarely mentioned but isn’t there a goodbye message too?

  2. December 14, 2011 at 5:42 pm

    There is a goodbye message, Steven, but it’s a fairly new feature introduced around 12.3(2). A long time ago, but still not testable, I guess, since it’s not mentioned in any of my reading. It looks to be only used when you shut down the EIGRP process gracefully.

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