Dual-5-nbrchange: Ip-eigrp(0)

DUAL-5-NBRCHANGE: IP-EIGRP(0)

I know what the message means, our instructor asked us what the (0) means. I have done hours of research on this, scoured books on Safari, I have seen that number be a (1), and (2) even a (3) in others examples, but I have not been able to make my number anything other than (0), and I have not found anything that tells me what this number corresponds to.

Can anyone help with this, I really need to go back to lambing, but this has become a mission.

Thanks.

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Comments

pham0329

Haha, I wasted the last 30 minutes trying to figure out what the (0) stands for because of this post and came up with nothing. I know the "IP-EIGRP(0)" part is the description of the status message, but can't seem to find what the 0 means. I've seen some with IP-EIGRP(1), but those involved redistributions/mpls so maybe it has to do with the source of the route or the network eigrp is running on top off?

Did a quick lab of eigrp running on frame-relay and it still shows up as (0)...

nerdydad

Yeah I tried that too.

pham0329

Tried enabling/disabling authentication, stubs, redistributing external routes....nothing. I give up!

Forsaken_GA

Interesting question. I see examples where the number varies as well, and even some examples without it. if I had to guess, it's probably something internal to IOS, and probably related to the EIGRP process itself, not necessarily to the error thats going on. If you get the answer back from your instuctor, I'd be interested to know what it was

Monkerz

I believe the (0) directly correlates with the "H" column in the "sh ip eigrp neighbor" command. So the status message you received is letting you know the status is for the first neighbor eigrp has established.

Just my guess...

pham0329

Nope, that's what I thought too. But no matter which neighbor went down, the (0) remains at 0

nerdydad

Granted I have just started my CCNP, I have tried everything I can think of, I have labbed all sorts of situations, but mine is always (0). I have seen instances without the number at all, but in books, this was always in older versions, so I thought maybe it was a new feature.

MrBrian

Could it be the Q count as seen in the "sho ip eigrp neighbors" ? You've got me curious now too lol.. it has to mean something!

pham0329

It's not the Q count either, I tried that too! I set the interface bandwidth to 1, and the eigrp bandwidth percent to 1, and the Q count went up and up but the (0) stayed at 0. I was thinking about this all day at work today...it's starting to drive me nuts.

nerdydad

Glad I'm not the only one, I'm sorry I dragged you all into this.

lrb

Asked a bunch of the other guys at work about this too - no-one is 100% sure.. I'd be interested to hear the answer to this when you get it from the instructor

nerdydad

Well, he didn't know either, he was hoping that I would figure it out. There is only one thing I have not tried yet, and that is using multiple PDM's, I just have to read ahead to ipv6, or figure out how to configure appletalk or ipx.

I even asked the CCIE we have at work, and he didn't know. My Instructor said he would get ahold of some friends at Cisco and see if we can get an answer.

Monkerz

I had an instructor like this. I also had an old boss kind of like this. He would Google random techno questions and ask them during our morning meetings. Kick started the brain.

MrBrian

nerdydad wrote: »

Well, he didn't know either, he was hoping that I would figure it out.

So he didn't know either huh? Haha, it's as if it's been bothering him as well so he seeded it to his students hoping one of them would come up with the answer lol.

nerdydad

Ok, so I got an answer from Cisco today, it looks like I was on the right path, but I haven't had a chance to verify, as a class we have moved on to OSPF and I really can't afford to spend any time in the past. Here is Cisco's response:

"(0)" is the EIGRP DUAL Topology Database "Name". It comes from a C struct
called ddbtype_ that contains a member called ddb_name with a type of char
and a length set by a #define that's currently 32. A comment on the
ddb_name field definition in the struct says "Name of protocol specific user
of ddb". A "ddb" is a DUAL Descriptor Block. It could be affected by the
PDM and given you've seen numbers up to 3 that may make sense if IP is "0",
IPX is "1", Appletalk is "2" and IPv6 is "3". It may also reflect and be
affected by the complexity of the topology. Sorry, I can't tell you with
certainty.