Re: [MEXT] TLV header in DSMIP

[Hesham Soliman <hesham at elevatemobile.com>]

On 04/04/2008, at 2:29 PM, Sri Gundavelli wrote:
>
>>>
>>>
>>> IPv4-UDP-ESP-GRE-(IPv4, IPv6) -- 3948 is in use, UDP port 4500.
>>> IPv4-UDP-TLV-GRE-(IPv4, IPv6) -- DSMIP6 port.
>>>
>>> This is ok.
>>
>> => If you want to have ESP come right after the TLV then please send
>> some text to describe this behaviour in terms of IPsec
>> operation. I'm
>> trying to avoid extending the IPsec
>> mess in the spec to strange cases that need more inquiries and more
>> time at this stage. So I'd rather have that specified elsewhere.
>> I think the easiest thing now is to do the format I sent above and
>> later if you want to add ESP/AH ...etc then you can specify
>> that in a
>> draft.
>>
>
> Sure. I understand the pain dealing with all these IPsec issues that
> were raised in the last few months.
>
> However, on this, probably there is not much to specify. Atleast from
> an implementation angle, its matter of implementing a tunnel interface
> with a given encap mode and the ESP header just goes after the TLV,
> just as how 3948 allows ESP right after UDP. We can borrow some text
> from Sec 3.4 [3948]. Its just one more encap layer after UDP.

=> Sri, if you think there is not much to do here then please send text.

Thanks,
Hesham

>
>
> Appears to be straight forward to me. But, I'm not sure what issues
> you or Pasi is referring to.
>
> Sri
>
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>> Hesham
>>
>>>
>>>
>>> Thanks
>>> Sri
>>>
>>>
>>>
>>>
>>>> It seems like it would be sufficient to only define this
>> now for GRE
>>>> and if someone comes up with a need for using IP/IPsec
>>>> directly after
>>>> the TLV header they can define that behaviour and request
>> a new type
>>>> value.
>>>>
>>>> So the new draft would only allocate one value for GRE.
>>>>
>>>> Any objections to this ? please respond quickly, we need to finish
>>>> this ASAP.
>>>>
>>>> Thanks,
>>>> Hesham
>>>> _______________________________________________
>>>> MEXT mailing list
>>>> MEXT at ietf.org
>>>> https://www.ietf.org/mailman/listinfo/mext
>>>
>>
>

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