Hi Dhruv and all,
You may notice the mail from Ramon about [HPCE- PCEP-EXT], which raised a point
about the format of the Domain-ID TLV. We also put a editors’ note in section
3.1.3 to capture this issue.
In [HPCE- PCEP-EXT] draft, we defined the Domain-ID TLV which has the same
format as PCE-DOMAIN sub-TLV format defined in RFC5088, but we did not notice
that the length of ISIS area ID should be variable. So, we need to refine the
format as follows at least (just my suggestions):
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Domain Type | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// Domain ID //
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type=1: an AS number (4 bytes)
Type=2: OSPF area ID (4 bytes)
Type=3: ISIS area ID, the length is variable
Note that this Domain-ID TLV can be included in many PCEP objects like OPEN,
NOTIFICATION, RP objects.
As for [draft-dhody], the sub-objects extended in this draft is for IRO, which
has the same format of ERO. So I think it is better to have this draft to
follow the RSVP sub-objects format.
In summary, I think the Domain ID TLV can be defined as defined in [HPCE-
PCEP-EXT] (with some refinement), IRO subject extension can be defined as
defined in [draft-dhody].
What are your opinions?
Thanks
Fatai
From: [email protected] [mailto:[email protected]] On Behalf Of Dhruv
Dhody
Sent: 2011年9月12日 18:50
To: [email protected]
Subject: [Pce] Update in ID: draft-dhody-pce-pcep-domain-sequence
Dear All,
We have rolled out a new version for DOMAIN-SEQ draft.
http://tools.ietf.org/html/draft-dhody-pce-pcep-domain-sequence-01
Main Changes done:
* Alignment for the new sub-objects
* Support for 4 byte AS number
We are still awaiting comments/suggestions in WG regarding
* New IRO Class Type for domain Sequence
* Use of RBNF to explain Subobjects ordering within domain-sequence(IRO Object)
For more information refer Message Thread:
http://www.ietf.org/mail-archive/web/pce/current/msg02580.html
We plan to resolve this before/during the next IETF meeting.
Regards,
Dhruv
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Dhruv Dhody
Senior Technical Leader, Huawei Technologies India Pvt. Ltd., Bangalore, India.
Ph +91-9845062422
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