draft-ietf-ccamp-rwa-wson-encode-09.txt		draft-ietf-ccamp-rwa-wson-encode-10.txt
	Network Working Group G. Bernstein		Network Working Group G. Bernstein
	Internet Draft Grotto Networking		Internet Draft Grotto Networking
	Intended status: Standards Track Y. Lee		Intended status: Standards Track Y. Lee
	Expires: September 2011 D. Li		Expires: September 2011 D. Li
	Huawei		Huawei
	W. Imajuku		W. Imajuku
	NTT		NTT
	March 8, 2011		March 11, 2011
	Routing and Wavelength Assignment Information Encoding for		Routing and Wavelength Assignment Information Encoding for
	Wavelength Switched Optical Networks		Wavelength Switched Optical Networks
	draft-ietf-ccamp-rwa-wson-encode-09.txt		draft-ietf-ccamp-rwa-wson-encode-10.txt
	Status of this Memo		Status of this Memo
	This Internet-Draft is submitted to IETF in full conformance with the		This Internet-Draft is submitted to IETF in full conformance with the
	provisions of BCP 78 and BCP 79.		provisions of BCP 78 and BCP 79.
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF), its areas, and its working groups. Note that		Task Force (IETF), its areas, and its working groups. Note that
	other groups may also distribute working documents as Internet-		other groups may also distribute working documents as Internet-
	Drafts.		Drafts.
	skipping to change at page 1, line 38		skipping to change at page 1, line 38
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	The list of current Internet-Drafts can be accessed at		The list of current Internet-Drafts can be accessed at
	http://www.ietf.org/ietf/1id-abstracts.txt		http://www.ietf.org/ietf/1id-abstracts.txt
	The list of Internet-Draft Shadow Directories can be accessed at		The list of Internet-Draft Shadow Directories can be accessed at
	http://www.ietf.org/shadow.html		http://www.ietf.org/shadow.html
	This Internet-Draft will expire on September 8, 2011.		This Internet-Draft will expire on September 11, 2011.
	Copyright Notice		Copyright Notice
	Copyright (c) 2011 IETF Trust and the persons identified as the		Copyright (c) 2011 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(http://trustee.ietf.org/license-info) in effect on the date of		(http://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 3, line 10		skipping to change at page 3, line 10
	1.1. Revision History..........................................4		1.1. Revision History..........................................4
	1.1.1. Changes from 00 draft................................4		1.1.1. Changes from 00 draft................................4
	1.1.2. Changes from 01 draft................................4		1.1.2. Changes from 01 draft................................4
	1.1.3. Changes from 02 draft................................5		1.1.3. Changes from 02 draft................................5
	1.1.4. Changes from 03 draft................................5		1.1.4. Changes from 03 draft................................5
	1.1.5. Changes from 04 draft................................5		1.1.5. Changes from 04 draft................................5
	1.1.6. Changes from 05 draft................................5		1.1.6. Changes from 05 draft................................5
	1.1.7. Changes from 06 draft................................5		1.1.7. Changes from 06 draft................................5
	1.1.8. Changes from 07 draft................................5		1.1.8. Changes from 07 draft................................5
	1.1.9. Changes from 08 draft................................6		1.1.9. Changes from 08 draft................................6
			1.1.10. Changes from 09 draft...............................6
	2. Terminology....................................................6		2. Terminology....................................................6
	3. Resource Pool Accessibility/Availability.......................6		3. Resource Pool Accessibility/Availability.......................6
	3.1. Resource Pool Accessibility Sub-TLV......................8		3.1. Resource Pool Accessibility Sub-TLV......................8
	3.2. Resource Block Wavelength Constraints Sub-TLV............10		3.2. Resource Block Wavelength Constraints Sub-TLV............10
	3.3. Resource Pool State Sub-TLV..............................10		3.3. Resource Pool State Sub-TLV..............................10
	3.4. Block Shared Access Wavelength Availability sub-TLV......12		3.4. Block Shared Access Wavelength Availability sub-TLV......12
	4. Resource Properties Encoding..................................13		4. Resource Properties Encoding..................................13
	4.1. Resource Block Information Sub-TLV.......................13		4.1. Resource Block Information Sub-TLV.......................13
	4.2. Input Modulation Format List Sub-Sub-TLV.................14		4.2. Input Modulation Format List Sub-Sub-TLV.................14
	4.2.1. Modulation Format Field.............................15		4.2.1. Modulation Format Field.............................15
	4.3. Input FEC Type List Sub-Sub-TLV..........................16		4.3. Input FEC Type List Sub-Sub-TLV..........................17
	4.3.1. FEC Type Field......................................17		4.3.1. FEC Type Field......................................17
	4.4. Input Bit Range List Sub-Sub-TLV.........................19		4.4. Input Bit Range List Sub-Sub-TLV.........................19
	4.4.1. Bit Range Field.....................................19		4.4.1. Bit Range Field.....................................19
	4.5. Input Client Signal List Sub-Sub-TLV.....................20		4.5. Input Client Signal List Sub-Sub-TLV.....................20
	4.6. Processing Capability List Sub-Sub-TLV...................21		4.6. Processing Capability List Sub-Sub-TLV...................21
	4.6.1. Processing Capabilities Field.......................21		4.6.1. Processing Capabilities Field.......................21
	4.7. Output Modulation Format List Sub-Sub-TLV................23		4.7. Output Modulation Format List Sub-Sub-TLV................23
	4.8. Output FEC Type List Sub-Sub-TLV.........................23		4.8. Output FEC Type List Sub-Sub-TLV.........................23
	5. Security Considerations.......................................23		5. Security Considerations.......................................23
	6. IANA Considerations...........................................24		6. IANA Considerations...........................................24
	skipping to change at page 6, line 12		skipping to change at page 6, line 12
	Fixed TLV figures and descriptions for consistent sub-sub-TLV		Fixed TLV figures and descriptions for consistent sub-sub-TLV
	nomenclature.		nomenclature.
	1.1.9. Changes from 08 draft		1.1.9. Changes from 08 draft
	Fixed ordering of fields in second half of sub-TLV example in		Fixed ordering of fields in second half of sub-TLV example in
	Appendix A.1.		Appendix A.1.
	Clarifying edits in section 3 on pools, blocks, and resources.		Clarifying edits in section 3 on pools, blocks, and resources.
			1.1.10. Changes from 09 draft
			Fixed the "Block Shared Access Wavelength Availability sub-TLV" of
			section 3.4 to use an "RB set field" rather than a single RB ID.
			Removed all 1st person idioms.
	2. Terminology		2. Terminology
	CWDM: Coarse Wavelength Division Multiplexing.		CWDM: Coarse Wavelength Division Multiplexing.
	DWDM: Dense Wavelength Division Multiplexing.		DWDM: Dense Wavelength Division Multiplexing.
	FOADM: Fixed Optical Add/Drop Multiplexer.		FOADM: Fixed Optical Add/Drop Multiplexer.
	ROADM: Reconfigurable Optical Add/Drop Multiplexer. A reduced port		ROADM: Reconfigurable Optical Add/Drop Multiplexer. A reduced port
	count wavelength selective switching element featuring ingress and		count wavelength selective switching element featuring ingress and
	skipping to change at page 6, line 40		skipping to change at page 6, line 46
	process or via a strictly optical process.		process or via a strictly optical process.
	WDM: Wavelength Division Multiplexing.		WDM: Wavelength Division Multiplexing.
	Wavelength Switched Optical Network (WSON): A WDM based optical		Wavelength Switched Optical Network (WSON): A WDM based optical
	network in which switching is performed selectively based on the		network in which switching is performed selectively based on the
	center wavelength of an optical signal.		center wavelength of an optical signal.
	3. Resource Pool Accessibility/Availability		3. Resource Pool Accessibility/Availability
	In this section we define the sub-TLVs for dealing with accessibility		This section define the sub-TLVs for dealing with accessibility and
	and availability of resource blocks within a pool of resources. These		availability of resource blocks within a pool of resources. These
	include the ResourceBlockAccessibility, ResourceWaveConstraints, and		include the ResourceBlockAccessibility, ResourceWaveConstraints, and
	RBPoolState sub-TLVs. All these sub-TLVs are concerned with sets of		RBPoolState sub-TLVs. All these sub-TLVs are concerned with sets of
	resources. As described in [WSON-Info] a resource pool is composed of		resources. As described in [WSON-Info] a resource pool is composed of
	blocks of resources with similar properties and accessibility		blocks of resources with similar properties and accessibility
	characteristics.		characteristics.
	In a WSON node that includes resource blocks (RB) we will want to		In a WSON node that includes resource blocks (RB) denoting subsets of
	denote subsets these blocks to efficiently describe common properties		these blocks allows one to efficiently describe common properties the
	the blocks and to describe the structure, if non-trivial, of the		blocks and to describe the structure, if non-trivial, of the resource
	resource pool. The RB Set field is defined in a similar manner to the		pool. The RB Set field is defined in a similar manner to the label
	label set concept of [RFC3471].		set concept of [RFC3471].
	The information carried in a RB set field is defined by:		The information carried in a RB set field is defined by:
	0 1 2 3		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		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
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Action |E|C| Reserved | Length |		| Action |E|C| Reserved | Length |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| RB Identifier 1 | RB Identifier 2 |		| RB Identifier 1 | RB Identifier 2 |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	skipping to change at page 12, line 27		skipping to change at page 12, line 27
	3.4. Block Shared Access Wavelength Availability sub-TLV		3.4. Block Shared Access Wavelength Availability sub-TLV
	Resources blocks may be accessed via a shared fiber. If this is the		Resources blocks may be accessed via a shared fiber. If this is the
	case then wavelength availability on these shared fibers is needed to		case then wavelength availability on these shared fibers is needed to
	understand resource availability.		understand resource availability.
	0 1 2 3		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		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
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Resource Block ID |I|E| Reserved |		|I|E| Reserved |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Ingress Available Wavelength Set Field |		| RB Set Field |
	: :		: :
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
			| Ingress Available Wavelength Set Field |
			: (Optional) :
			+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Egress Available Wavelength Set Field |		| Egress Available Wavelength Set Field |
	: :		: (Optional) :
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	Resource Block ID:
	The 16 bit integer used to identify a particular resource block.
	I bit:		I bit:
	Indicates whether the ingress available wavelength set field is		Indicates whether the ingress available wavelength set field is
	included (1) or not (0).		included (1) or not (0).
	E bit:		E bit:
	Indicates whether the egress available wavelength set field is		Indicates whether the egress available wavelength set field is
	included (1) or not (0).		included (1) or not (0).
			RB Set Field:
			A Resource Block set in which all the members share the same ingress
			or egress fiber or both.
	Ingress Available Wavelength Set Field:		Ingress Available Wavelength Set Field:
	Indicates the wavelengths currently available (not being used) on the		Indicates the wavelengths currently available (not being used) on the
	ingress fiber to this resource block.		ingress fiber to this resource block.
	Egress Available Wavelength Set Field:		Egress Available Wavelength Set Field:
	Indicates the wavelengths currently available (not being used) on the		Indicates the wavelengths currently available (not being used) on the
	egress fiber from this resource block.		egress fiber from this resource block.
	4. Resource Properties Encoding		4. Resource Properties Encoding
	Within a WSON network element (NE) there may be resources with signal		Within a WSON network element (NE) there may be resources with signal
	compatibility constraints. Such resources typically come in "blocks"		compatibility constraints. Such resources typically come in "blocks"
	which contain a group on identical and indistinguishable individual		which contain a group on identical and indistinguishable individual
	resources. These resource blocks may consist of regenerators,		resources. These resource blocks may consist of regenerators,
	wavelength converters, etc... Such resource blocks may also		wavelength converters, etc... Such resource blocks may also
	constitute the network element as a whole as in the case of an		constitute the network element as a whole as in the case of an
	electro optical switch. In this section we primarily focus on the		electro optical switch. This section primarily focused on the signal
	signal compatibility and processing properties of such a resource		compatibility and processing properties of such a resource block, the
	block, the accessibility aspects of a resource in a shared pool,		accessibility aspects of a resource in a shared pool, except for the
	except for the shared access indicators, were encoded in the previous		shared access indicators, were encoded in the previous section.
	section.
	The fundamental properties of a resource block, such as a regenerator		The fundamental properties of a resource block, such as a regenerator
	or wavelength converter, are:		or wavelength converter, are:
	(a)Input constraints (shared ingress, modulation, FEC, bit rate,		(a)Input constraints (shared ingress, modulation, FEC, bit rate,
	GPID)		GPID)
	(b)Processing capabilities (number of resources in a block,		(b)Processing capabilities (number of resources in a block,
	regeneration, performance monitoring, vendor specific)		regeneration, performance monitoring, vendor specific)
	skipping to change at page 26, line 46		skipping to change at page 26, line 46
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Action=0 |0| | Length = 8 |		| Action=0 |0| | Length = 8 |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| RB ID = #2 | zero padding |		| RB ID = #2 | zero padding |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	A.2. Wavelength Conversion Range Sub-TLV		A.2. Wavelength Conversion Range Sub-TLV
	Example:		Example:
	We give an example based on figure 1 about how to represent the		This example, based on figure 1, shows how to represent the
	wavelength conversion range of wavelength converters. Suppose the		wavelength conversion range of wavelength converters. Suppose the
	wavelength range of input and output of WC1 and WC2 are {L1, L2, L3,		wavelength range of input and output of WC1 and WC2 are {L1, L2, L3,
	L4}:		L4}:
	0 1 2 3		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		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
	Note: WC Set		Note: WC Set
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Action=0 |1| Reserved | Length = 8 |		| Action=0 |1| Reserved | Length = 8 |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	skipping to change at page 27, line 30		skipping to change at page 27, line 30
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	Note: wavelength output range		Note: wavelength output range
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| 2 | Num Wavelengths = 4 | Length = 8 |		| 2 | Num Wavelengths = 4 | Length = 8 |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	|Grid | C.S. | Reserved | n for lowest frequency = 1 |		|Grid | C.S. | Reserved | n for lowest frequency = 1 |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	A.3. An OEO Switch with DWDM Optics		A.3. An OEO Switch with DWDM Optics
	In Figure 2 we show an electronic switch fabric surrounded by DWDM		In Figure 2 shows an electronic switch fabric surrounded by DWDM
	optics. In this example the electronic fabric can can handle either		optics. In this example the electronic fabric can can handle either
	G.709 or SDH signals only (2.5 or 10 Gbps). To describe this node we		G.709 or SDH signals only (2.5 or 10 Gbps). To describe this node we
	have the potential information:		have the potential information:
	<Node_Info> ::= <Node_ID>[Other GMPLS sub-		<Node_Info> ::= <Node_ID>[Other GMPLS sub-
	TLVs][<ConnectivityMatrix>...] [<ResourcePool>][<RBPoolState>]		TLVs][<ConnectivityMatrix>...] [<ResourcePool>][<RBPoolState>]
	In this case there is complete port to port connectivity so the		In this case there is complete port to port connectivity so the
	<ConnectivityMatrix> is not required. In addition since there are		<ConnectivityMatrix> is not required. In addition since there are
	sufficient ports to handle all wavelength signals we will not need		sufficient ports to handle all wavelength signals the <RBPoolState>
	the <RBPoolState> element.		element is not needed.
	Hence our attention will be focused on the <ResourcePool> sub-TLV:		Hence our attention will be focused on the <ResourcePool> sub-TLV:
	<ResourcePool> ::=		<ResourcePool> ::=
	<ResourceBlockInfo>[<ResourceBlockAccessibility>...][<ResourceWaveCon		<ResourceBlockInfo>[<ResourceBlockAccessibility>...][<ResourceWaveCon
	straints>...]		straints>...]
	/| +-----------+ +-------------+ +------+		/| +-----------+ +-------------+ +------+
	/D+--->| +--->|Tunable Laser|-->| |		/D+--->| +--->|Tunable Laser|-->| |
	+ e+--->| | +-------------+ | C |		+ e+--->| | +-------------+ | C |
	========>| M| | | ... | o |========>		========>| M| | | ... | o |========>
	skipping to change at page 29, line 36		skipping to change at page 29, line 36
	| Processing Capabilities List Sub-Sub-TLV |		| Processing Capabilities List Sub-Sub-TLV |
	: Fixed (non optional) 3R regeneration :		: Fixed (non optional) 3R regeneration :
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Output Modulation Type List Sub-Sub-TLV |		| Output Modulation Type List Sub-Sub-TLV |
	: NRZ :		: NRZ :
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Output FEC Type List Sub-Sub-TLV |		| Output FEC Type List Sub-Sub-TLV |
	: Standard SDH, G.709 FECs :		: Standard SDH, G.709 FECs :
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	Since we have fixed connectivity to resource block (the electronic		Since there is fixed connectivity to resource blocks (the electronic
	switch) we get <ResourceBlockAccessibility>:		switch) the <ResourceBlockAccessibility> is:
	0 1 2 3		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		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
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Connectivity=1|Reserved |		| Connectivity=1|Reserved |
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| Ingress Link Set Field A #1 |		| Ingress Link Set Field A #1 |
	: (All ingress links connect to resource) :		: (All ingress links connect to resource) :
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	| RB Set Field A #1 |		| RB Set Field A #1 |
End of changes. 19 change blocks.
	29 lines changed or deleted		39 lines changed or added
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