From: ancp-bounces at ietf.org [mailto:ancp-bounces at ietf.org] On Behalf Of Wojciech Dec (wdec)
Sent: 18. februar 2008 07:09
To: ancp at ietf.org
Subject: Re: [ANCP] Agenda items for IETF71 ANCP WG meetingHi All,are there any other calls for slots at the upcoming meeting?So far we have the following:- ANCP Access-node & NAS MIB Update; Stefaan De Cnodder- ANCP Design Team update (tentative)Regards,Woj.
From: Wojciech Dec (wdec)
Sent: 11 January 2008 14:04
To: ancp at ietf.org
Subject: [ANCP] Agenda items for IETF71 ANCP WG meetingWe're taking requests for slots in the agenda for our next ANCP WG meeting. Please respond with any tentative requests by February 8.
Thanks,
Matthew & Woj
Internet-Draft Peter Arberg
Intended status: Standards Track Redback Networks
Expires: August 17, 2008
February 17, 2008
Vendor Specific Message for ANCP.
draft-arberg-ancp-vendorspecific-00
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Copyright Notice
Copyright (C) The IETF Trust (2008).
Abstract
This document is aimed at presenting Access Node Control Protocol
(ANCP) with a vendor specific protocol extension.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Specification of Requirements . . . . . . . . . . . . . . . . 2
3. Vendor specific messages in GSMPv3 . . . . . . . . . . . . . . 2
4. Vendor specific messages in ANCP . . . . . . . . . . . . . . . 3
4.1. Vendor Specific Capability Negotiation . . . . . . . . . . 3
4.2. Vendor Specific Extensions . . . . . . . . . . . . . . . . 4
5. Security Considerations . . . . . . . . . . . . . . . . . . . 5
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 5
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.1. Normative References . . . . . . . . . . . . . . . . . . . 6
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 6
Intellectual Property and Copyright Statements . . . . . . . . . . 7
1. Introduction
This document is aimed at presenting ANCP with a vendor specific
protocol extension. GSMPv3 [1] which is used as foundation for the
ANCP protocol [2] already has vendor specific functionality defined,
but since ANCP defines new capability negotiations and only include
few specific messages from GSMPv3, it is necessary to define a new
vendor specific message handling for ANCP.
This proposal aims at collecting feedback from the ANCP community in
order to work towards consensus. Eventually, text derived from the
material in section 4. would be intended to be incorporated in the
"ANCP Protocol I-D" [2].
2. Specification of Requirements
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
3. Vendor specific messages in GSMPv3
GSMPv3 [1] defines vendor specific ranges for vendor private
extensions to the GSMPv3 protocol. GSMPv3 defines vendor specific
ranges for the following functionalities:
- Message Type Name Space
- Label Type Name Space
- Failure Response Message Name Space
- Model Type Name Space
The one which could be interesting to ANCP, is the Message Type Name
Space that GSMPv3 divides into four ranges as follows:
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- Message Types 0-99.
Message Types in this range are part of the GSMPv3 base
protocol. Message types in this range are allocated
through an IETF consensus action [19].
- Message Types 100-199.
Message Types in this range are Specification Required
[19]. Message Types using this range must be documented
in an RFC or other permanent and readily available
references.
- Message Types 200-249.
Message Types in this range are Specification Required
[19] and are intended for Abstract and Resource Model
Extension Messages. Message Types using this range must
be documented in an RFC or other permanent and readily
available references.
- Message Types 250-255.
Message Types in this range are reserved for vendor
private extensions and are the responsibility of
individual vendors. IANA management of this range of the
Message Type Name Space is unnecessary.
4. Vendor specific messages in ANCP
The proposal in this document is to define a new capability type for
vendor specific data as part of the ANCP protocol capability
negotiations, and further more define a separate vendor specific
message extension.
4.1 Vendor Specific Capability Negotiation
Capability Type : Vendor-Specific Data = 0x06 (TBD)
Length (in bytes) : multiply of 4.
Every Enterprise with vendor specific data supported will add 4
bytes to the length field.
Capability Data : list of Enterprise numbers.
"Enterprise NumberN" is a vendor's Enterprise Number as registered
with IANA [3]. It is a four-byte integer value in network byte-
order.
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4.2 Vendor Specific Extensions
GSMPv3 [1] "Vendor Specific" message (type 255) MUST be used by
the BRAS and the Access Node to exchange vendor specific data
as part of the ANCP protocol communication.
The Vendor Specific message uses the GSMPv3 [1] basic defined
message format as shown below:
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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Vers | Sub | Message Type | Result| Code |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Partition ID | Transaction Identifier |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|I| SubMessage Number | Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
~ Message Body ~
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
The Message body in the ANCP vendor specific message MUST follow
the format shown below:
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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Length | Enterprise Number1 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | DataLen1 | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +
\ Vendor Specific Data1 \
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Enterprise Number2 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| DataLen2 | Vendor Specific Data2 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
\ \
. .
. .
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
The Message Type for Vendor Specific messages is 255 (TBD).
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The one-byte Length field is the length of the data carried in the
Message Body in bytes. The length includes the length of the first
Enterprise Number; the minimum length is 4 bytes.
"Enterprise NumberN" is a vendor's Enterprise Number as registered
with IANA [3]. It is a four-byte integer value in network byte-
order. The Enterprise number used in the Vendor Specific message
MUST match the numbers agreed upon in the capability negotiation.
If an Enterprise number used in the Vendor Specific Message Body is
different from the capability negotiations then the vendor specific
data for this Enterprise number MAY silently be discard by the
receiver.
DataLenN is the length of the data associated with the Enterprise
Number.
The Vendor Specific Data is an opaque sequence of bytes.
The Vendor-Specific Message includes at least one Enterprise Number
and carries opaque data defined by the organization identified by
the Enterprise Number. The ANCP end node, Access Node or BRAS, MAY
include data associated with more than one vendor's Enterprise
Number within a single instance of the Vendor Specific Message.
Of course, the Vendor-Specific data are vendor-specific. This
specification does not establish any requirements on the data in the
message. Vendors who make use of this message type are encouraged to
document their usage in order to make interoperability possible.
5. Security Considerations
The BRAS and DSLAMs are implicitly in a trusted domain, so security
for vendor specific messages in ANCP do not put forth other security
considerations not already mentioned in the ANCP Protocol draft [2].
6. IANA Considerations
This document defines a new capability type as well as a new message
type which need to be reserved with IANA, as part of the overall
ANCP Protocol [2] IANA reservation.
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7. References
7.1. Normative References
[1] Doria, A. et al, "General Switch Management Protocol - V3"
(GSMPv3), RFC 3292, June 2002.
[2] S. Wadhwa, J. Moisand, .. " Protocol for Access Node Control
Mechanism in Broadband Networks", draft-ietf-ancp-protocol-
02.txt
[3] IANA, "Private Enterprise Numbers (http://www.iana.org/
assignments/enterprise-numbers.html)".
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
Authors' Addresses
Peter Arberg
Redback Networks an Ericsson Company
300 Holger Way
San Jose, CA 95134
USA
Email: parberg at redback.com
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