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Re: [OSPF] New Version Notification for draft-ietf-ospf-ospfv3-lsa-extend-02.txt

Acee Lindem <acee.lindem@ericsson.com> Fri, 18 April 2014 22:39 UTC

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From: Acee Lindem <acee.lindem@ericsson.com>
To: prz <prz@zeta2.ch>
Thread-Topic: [OSPF] New Version Notification for draft-ietf-ospf-ospfv3-lsa-extend-02.txt
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Date: Fri, 18 Apr 2014 22:39:04 +0000
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Subject: Re: [OSPF] New Version Notification for draft-ietf-ospf-ospfv3-lsa-extend-02.txt
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Hi Tony,

On Apr 18, 2014, at 6:28 PM, prz <prz@zeta2.ch> wrote:

> On Fri, 18 Apr 2014 20:41:13 +0000, Acee Lindem <acee.lindem@ericsson.com> wrote:
>> Hi Peter,
>> 
>> On Apr 18, 2014, at 12:57 PM, Peter Psenak <ppsenak@cisco.com> wrote:
>> 
>>> Hi Acee,
>>> 
>>> I do not see any problem with routers with various compatibility modes living in area/network together. With all the modes we have, we provide the possibility of graceful migration from old to new LSA types. I don't think we need to restrict any combination. Sure, if someone mix "full" and "none", then it can not expect the full reachability between them, but that does not mean we have to prohibit it.
>> 
> 
> Zipped through the diffs on the new one. See most work went into migration. Two observations:
> 
> . nitpick: WILL is _not_ any kind of normative language. Use MUST

Ok - I’ll search these out. 


> . the only reason the migration holds together without stable loops is that there is an implicit assumption in the draft (I didn't see it spelled out but then again I skimmed over it only) that the metric advertised in TLVs and old style is always absolutely the same. I suggest to spell that out strongly.

It is implicit but it seems rather obvious that if one originates the non-extended and extended versions of the same LSA, the content MUST be the same. However, I can state this explicitly. 

Thanks,
Acee 





> 
> --- tony

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