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IP scope reserved for internal use

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A model citizen

IP scope reserved for internal use

Today, while modifying a completely different VLAN this error showed up for a dummy vlan of mine:

 

rbnielsen_0-1597314297154.png

I was not able to continue, untill I changed the IP scope of this dummy vlan.

 

Since when has this been a thing?

6 REPLIES 6
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Kind of a big deal

Re: IP scope reserved for internal use

I guess that‘s a thing since RFC5737 (perhaps even since RFC1166) came out which declared 192.0.2.0/24 as reserved IP space:

https://tools.ietf.org/html/rfc5737

 

These blocks are not for local use, and the filters may be used in
   both local and public contexts.

 

Highlighted
A model citizen

Re: IP scope reserved for internal use

The block is reserved for testing, I should still be able to configure it on an interface, that is not being used for traffic.
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Kind of a big deal

Re: IP scope reserved for internal use

Strcitly speaking, it's reserved for documentation (see the RFC). 😉

 

One could argue if Meraki is simply following standards / RFCs or if you should be able to use it (and violate the RFC). On the other hand I don't think that the forums will help you further with this question.

Highlighted
A model citizen

Re: IP scope reserved for internal use

Well, it's Cisco best practice to use 192.0.2.1 as virtual ip for web authentication.

So one could argue, that it should be allowed. 😉
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Kind of a big deal

Re: IP scope reserved for internal use

>Well, it's Cisco best practice to use 192.0.2.1 as virtual ip for web authentication.

 

No, I don't think that is the case.  They merely use it in their documentation - you know - the block reserved for documentation.

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Kind of a big deal

Re: IP scope reserved for internal use

I hear ya...Cisco WLC != Cisco Meraki AP though. 😉

 

Guess we'll see many other interesting facts if the discussion continues, but as already written: I don't think this will bring you further with that request to be allowed to use that. 😉

I don't know, possibly Meraki is really using this space (because it's reserved) for some kind of internal stuff. At least I'd be really curious to get some deeper insight into that. 🙂

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