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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