Re: [CCAMP] [OSPF] Updates to ASON Routing for OSPFv2 Protocols (RFC 5787bis) will Update RFC 5786

[Acee Lindem <[e-mail]>]

Hi Lou, 
I think that would be my preference given that it would be a change to base OSPF TE. 
Thanks,
Acee 
On Nov 29, 2011, at 6:50 AM, Lou Berger wrote:

> Acee,
> 	Don't you think that addressing the second is a major change enough
> change that it should be done in a standalone draft?
> 
> Lou
> 
> On 11/28/2011 9:58 AM, Acee Lindem wrote:
>> Hi Fatai,
>> We have two separate requirements here. The ASON requirement is to be
>> able to advertise reachability information for multiple ASON transport
>> nodes. As you've noted, there has been an independent requirement to
>> advertise more information than will fit in a single LSA. Our draft only
>> addresses the first. However, we'll consider this when addressing
>> Adrian's comments. Much of this depends on whether or not we do a second
>> review and WG last call. 
>> Thanks,
>> Acee
>> 
>> On Nov 27, 2011, at 10:11 PM, Zhangfatai wrote:
>> 
>>> Hi all,
>>> 
>>> Can this relaxation be applicable to all the future OSFPv2 documents ?
>>> 
>>> 
>>> 
>>> 
>>> Thanks
>>> 
>>> Fatai
>>> 
>>> *From:* [e-mail]
>>> <mailto:[e-mail]> [mailto:[e-mail]] *On
>>> Behalf Of *Acee Lindem
>>> *Sent:* 2011年11月28日 9:14
>>> *To:* [e-mail] <mailto:[e-mail]> List
>>> *Cc:* [e-mail] <mailto:[e-mail]>
>>> *Subject:* [OSPF] Updates to ASON Routing for OSPFv2 Protocols (RFC
>>> 5787bis) will Update RFC 5786
>>> 
>>> Please note that this document relaxes the RFC 5786  restriction that
>>> a Node Attribute TLV may only appear in a single OSPF TE LSA. Here is
>>> the text:
>>> 
>>>   In order to support ASON reachability advertisement, the Node
>>>   Attribute TLV defined in [RFC5786] is used to advertise the
>>>   combination of a TE Router ID and its set of associated reachable
>>>   address prefixes. The Node Attribute TLV can contain the following
>>>   sub-TLVs:
>>> 
>>>      - TE Router ID sub-TLV: Length: 4; Defined in Section 6.2
>>>      - Node IPv4 Local Address sub-TLV: Length: variable; [RFC5786]
>>>      - Node IPv6 Local Address sub-TLV: Length: variable; [RFC5786]
>>> 
>>>   A router may support multiple transport nodes as discussed in section
>>>   6, and, as a result, may be required to advertise reachability (ASON
>>>   SNPPs) separately for each transport node. As a consequence, it MUST
>>>   be possible for the router to originate more than one TE LSA
>>>   containing the Node Attribute TLV when used for ASON reachability
>>>   advertisement.
>>> 
>>>   Hence, the Node Attribute TLV [RFC5786] advertisement rules must be
>>>   relaxed for ASON. A Node Attribute TLV MAY appear in more than one TE
>>>   LSA originated by the RC when the RC is advertising reachability
>>>   information for a different transport node identified by the Local TE
>>>   Router Sub-TLV (refer to section 6.1).
>>> Here is a link to the
>>> document: http://www.ietf.org/id/draft-ietf-ccamp-rfc5787bis-03.txt
>>> 
>>> If you have any concerns with this change, please send them to this
>>> list with the CCAMP list copied. 
>>> 
>>> Thanks,
>>> Acee
>>> 
>> 
>> 
>> 
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