Diameter Maintenance and J. Korhonen, Ed. Extensions (DIME) TeliaSonera Internet-Draft H. Tschofenig Intended status: Standards Track Nokia Siemens Networks Expires: November 27, 2008 May 26, 2008 Quality of Service Parameters for Usage with the AAA Framework draft-ietf-dime-qos-parameters-05.txt Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on November 27, 2008. Abstract This document defines a number of Quality of Service (QoS) parameters that can be reused for conveying QoS information within RADIUS and Diameter. The payloads used to carry these QoS parameters are opaque for the AAA client and the AAA server itself and interpreted by the respective Resource Management Function. Korhonen & Tschofenig Expires November 27, 2008 [Page 1] Internet-Draft QoS Parameters May 2008 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1. Traffic Model Parameter . . . . . . . . . . . . . . . . . 4 1.2. Constraints Parameters . . . . . . . . . . . . . . . . . . 4 1.3. Traffic Handling Directives . . . . . . . . . . . . . . . 5 1.4. Traffic Classes . . . . . . . . . . . . . . . . . . . . . 5 2. Terminology and Abbreviations . . . . . . . . . . . . . . . . 6 3. AVP Definition . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1. TMOD-1 AVP . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1.1. TMOD-Rate-1 AVP . . . . . . . . . . . . . . . . . . . 6 3.1.2. TMOD-Size-1 AVP . . . . . . . . . . . . . . . . . . . 6 3.1.3. Peak-Data-Rate-1 AVP . . . . . . . . . . . . . . . . . 6 3.1.4. Minimum-Policed-Unit-1 AVP . . . . . . . . . . . . . . 6 3.2. TMOD-2 AVP . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2.1. TMOD-Rate-2 AVP . . . . . . . . . . . . . . . . . . . 7 3.2.2. TMOD-Size-2 AVP . . . . . . . . . . . . . . . . . . . 7 3.2.3. Peak-Data-Rate-2 AVP . . . . . . . . . . . . . . . . . 7 3.2.4. Minimum-Policed-Unit-2 AVP . . . . . . . . . . . . . . 7 3.3. Path-Latency AVP . . . . . . . . . . . . . . . . . . . . . 7 3.4. Path-Jitter AVP . . . . . . . . . . . . . . . . . . . . . 8 3.4.1. Path-Jitter-STAT1 AVP . . . . . . . . . . . . . . . . 8 3.4.2. Path-Jitter-STAT2 AVP . . . . . . . . . . . . . . . . 8 3.4.3. Path-Jitter-STAT3 AVP . . . . . . . . . . . . . . . . 8 3.4.4. Path-Jitter-STAT4 AVP . . . . . . . . . . . . . . . . 8 3.5. Path-PLR AVP . . . . . . . . . . . . . . . . . . . . . . . 8 3.6. Path-PER AVP . . . . . . . . . . . . . . . . . . . . . . . 9 3.7. Slack-Term AVP . . . . . . . . . . . . . . . . . . . . . . 9 3.8. Priority AVP . . . . . . . . . . . . . . . . . . . . . . . 9 3.8.1. Preemption-Priority AVP . . . . . . . . . . . . . . . 9 3.8.2. Defending-Priority AVP . . . . . . . . . . . . . . . . 9 3.9. Admission-Priority AVP . . . . . . . . . . . . . . . . . . 9 3.10. ALRP AVP . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.10.1. ALRP-Namespace AVP . . . . . . . . . . . . . . . . . . 10 3.10.2. ALRP-Priority AVP . . . . . . . . . . . . . . . . . . 10 3.11. Excess-Treatment AVP . . . . . . . . . . . . . . . . . . . 10 3.11.1. Excess-Treatment-Value AVP . . . . . . . . . . . . . . 11 3.11.2. Remark-Value AVP . . . . . . . . . . . . . . . . . . . 11 3.11.3. PHB-Class AVP . . . . . . . . . . . . . . . . . . . . 12 3.11.4. DSTE-Class-Type AVP . . . . . . . . . . . . . . . . . 13 3.11.5. Y.1541-QoS-Class AVP . . . . . . . . . . . . . . . . . 13 4. Extensibility . . . . . . . . . . . . . . . . . . . . . . . . 14 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15 5.1. QoS Profile . . . . . . . . . . . . . . . . . . . . . . . 15 5.2. AVP Allocations . . . . . . . . . . . . . . . . . . . . . 16 5.3. Excess-Treatment AVP . . . . . . . . . . . . . . . . . . . 16 5.4. DSTE-Class-Type AVP . . . . . . . . . . . . . . . . . . . 16 5.5. Y.1541-QoS-Class AVP . . . . . . . . . . . . . . . . . . . 16 Korhonen & Tschofenig Expires November 27, 2008 [Page 2] Internet-Draft QoS Parameters May 2008 6. Security Considerations . . . . . . . . . . . . . . . . . . . 17 7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 17 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8.1. Normative References . . . . . . . . . . . . . . . . . . . 17 8.2. Informative References . . . . . . . . . . . . . . . . . . 18 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 19 Intellectual Property and Copyright Statements . . . . . . . . . . 20 Korhonen & Tschofenig Expires November 27, 2008 [Page 3] Internet-Draft QoS Parameters May 2008 1. Introduction This document defines a number of Quality of Service (QoS) parameters that can be reused for conveying QoS information within RADIUS and Diameter. The subsequent section give an overview of the parameters defined by this document. 1.1. Traffic Model Parameter The Traffic Model (TMOD) parameter is a container consisting of four sub-parameters: o rate (r) o bucket size (b) o peak rate (p) o minimum policed unit (m) The TMOD parameter is a mathematically complete way to describe the traffic source. If, for example, TMOD is set to specify bandwidth only, then set r = peak rate = p, b = large, m = large. As another example if TMOD is set for TCP traffic, then set r = average rate, b = large, p = large. 1.2. Constraints Parameters , , , and are QoS parameters describing the desired path latency, path jitter and path bit error rate respectively. The parameter refers to the accumulated latency of the packet forwarding process associated with each QoS aware node along the path, where the latency is defined to be the mean packet delay added by each such node. This delay results from speed-of-light propagation delay, from packet processing limitations, or both. The mean delay reflects the variable queuing delay that may be present. The purpose of this parameter is to provide a minimum path latency for use with services which provide estimates or bounds on additional path delay [RFC2212]. The parameter refers to the accumulated jitter of the packet forwarding process associated with each QoS aware node along the path, where the jitter is defined to be the nominal jitter added by each such node. IP packet jitter, or delay variation, is defined in Section 3.4 of RFC 3393 [RFC3393], (Type-P-One-way-ipdv), and where the selection function includes the packet with minimum delay such that the distribution is equivalent to 2-point delay variation in [Y.1540]. The suggested evaluation interval is 1 minute. This Korhonen & Tschofenig Expires November 27, 2008 [Page 4] Internet-Draft QoS Parameters May 2008 jitter results from packet processing limitations, and includes any variable queuing delay which may be present. The purpose of this parameter is to provide a nominal path jitter for use with services that provide estimates or bounds on additional path delay [RFC2212]. The procedures for collecting path jitter information are outside the scope of this document. The parameter refers to the accumulated packet loss rate (PLR) of the packet forwarding process associated with each QoS aware node along the path where the PLR is defined to be the PLR added by each such node. The parameter refers to the accumulated packet error rate (PER) of the packet forwarding process associated with each QoS aware node, where the PER is defined to be the PER added by each such node. The parameter refers to the difference between desired delay and delay obtained by using bandwidth reservation, and which is used to reduce the resource reservation for a flow [RFC2212]. The parameter refers to the priority of the new flow compared with the of previously admitted flows. Once a flow is admitted, the preemption priority becomes irrelevant. The parameter is used to compare with the preemption priority of new flows. For any specific flow, its preemption priority MUST always be less than or equal to the defending priority. and provide an essential way to differentiate flows for emergency services, ETS, E911, etc., and assign them a higher admission priority than normal priority flows and best-effort priority flows. 1.3. Traffic Handling Directives The { TMOD-Rate-1 } { TMOD-Size-1 } { Peak-Data-Rate-1 } { Minimum-Policed-Unit-1 } 3.1.1. TMOD-Rate-1 AVP The TMOD-Rate-1 AVP (AVP Code TBD) is of type Float32 and contains the rate (r). 3.1.2. TMOD-Size-1 AVP The TMOD-Size-1 AVP (AVP Code TBD) is of type Float32 and contains the bucket size (b). 3.1.3. Peak-Data-Rate-1 AVP The Peak-Data-Rate-1 AVP (AVP Code TBD) is of type Float32 and contains the peak rate (p). 3.1.4. Minimum-Policed-Unit-1 AVP The Minimum-Policed-Unit-1 AVP (AVP Code TBD) is of type Unsigned32 and contains the minimum policed unit (m). The values r, b, and p are represented as IEEE floating point values and the sign bit MUST be zero (all values MUST be non-negative). Exponents less than 127 (i.e., 0) are prohibited. Exponents greater than 162 (i.e., positive 35) are discouraged, except for specifying a peak rate of infinity. Infinity is represented with an exponent of all ones (255) and a sign bit and mantissa of all zeroes. Korhonen & Tschofenig Expires November 27, 2008 [Page 6] Internet-Draft QoS Parameters May 2008 3.2. TMOD-2 AVP A description of the semantic of the parameter values can be found in [RFC2215]. The TMOD-2 AVP is useful in a DiffServ environment. The coding for the TMOD-2 AVP is as follows: TMOD-2 ::= < AVP Header: TBD > { TMOD-Rate-2 } { TMOD-Size-2 } { Peak-Data-Rate-2 } { Minimum-Policed-Unit-2 } 3.2.1. TMOD-Rate-2 AVP The TMOD-Rate-2 AVP (AVP Code TBD) is of type Float32 and contains the rate (r). 3.2.2. TMOD-Size-2 AVP The TMOD-Size-2 AVP (AVP Code TBD) is of type Float32 and contains the bucket size (b). 3.2.3. Peak-Data-Rate-2 AVP The Peak-Data-Rate-2 AVP (AVP Code TBD) is of type Float32 and contains the peak rate (p). 3.2.4. Minimum-Policed-Unit-2 AVP The Minimum-Policed-Unit-2 AVP (AVP Code TBD) is of type Unsigned32 and contains the minimum policed unit (m). The values r, b, and p are represented as IEEE floating point values and the sign bit MUST be zero (all values MUST be non-negative). Exponents less than 127 (i.e., 0) are prohibited. Exponents greater than 162 (i.e., positive 35) are discouraged, except for specifying a peak rate of infinity. Infinity is represented with an exponent of all ones (255) and a sign bit and mantissa of all zeroes. 3.3. Path-Latency AVP The semantic of the parameter values can be found in [RFC2210] and [RFC2215]. The Path-Latency AVP (AVP Code TBD) is of type Integer32. The composition rule for the path latency is summation with a clamp of (2**32 - 1) on the maximum value. The latencies are average values reported in units of one microsecond. A system with Korhonen & Tschofenig Expires November 27, 2008 [Page 7] Internet-Draft QoS Parameters May 2008 resolution less than one microsecond MUST set unused digits to zero. The total latency added across all QoS aware nodes along the path can range as high as (2**32)-2. 3.4. Path-Jitter AVP The coding for the Path-Jitter AVP is as follows: Path-Jitter ::= < AVP Header: TBD > { Path-Jitter-STAT1 } { Path-Jitter-STAT2 } { Path-Jitter-STAT3 } { Path-Jitter-STAT4 } 3.4.1. Path-Jitter-STAT1 AVP The Path-Jitter-STAT1 AVP (AVP Code TBD) is of type Integer32 and contains the variance. 3.4.2. Path-Jitter-STAT2 AVP The Path-Jitter-STAT2 AVP (AVP Code TBD) is of type Integer32 and contains the 99.9%-ile. 3.4.3. Path-Jitter-STAT3 AVP The Path-Jitter-STAT3 AVP (AVP Code TBD) is of type Integer32 and contains the minimum latency. 3.4.4. Path-Jitter-STAT4 AVP The Path-Jitter-STAT4 AVP (AVP Code TBD) is of type Integer32 and is reserved for future use. The Path-Jitter AVP is the combination of four statistics describing the jitter distribution with a clamp of (2**32 - 1) on the maximum of each value. The jitter STATs are reported in units of one microsecond. 3.5. Path-PLR AVP The Path-PLR AVP (AVP Code TBD) is of type Float32 and contains the path packet loss ratio. The PLRs are reported in units of 10^-11. A system with resolution less than one microsecond MUST set unused digits to zero. The total PLR added across all QoS aware nodes can range as high as 10^-1. Korhonen & Tschofenig Expires November 27, 2008 [Page 8] Internet-Draft QoS Parameters May 2008 3.6. Path-PER AVP The Path-PER AVP (AVP Code TBD) is of type Float32 and contains the path packet error ratio. The PERs are reported in units of 10^-11. A system with resolution less than one microsecond MUST set unused digits to zero. The total PER added across all QoS aware nodes can range as high as 10^-1. 3.7. Slack-Term AVP The Slack-Term AVP (AVP Code TBD) is of type Integer32 and its semantic can be found in [RFC2212] and [RFC2215]. The Slack-Term AVP contains values measured in microseconds and its value can range from 0 to (2**32)-1 microseconds. 3.8. Priority AVP The Priority AVP is a grouped AVP consisting of two AVPs, the Preemption-Priority and the Defending-Priority AVP. A description of the semantic can be found in [RFC3181]. Priority ::= < AVP Header: TBD > { Preemption-Priority } { Defending-Priority } 3.8.1. Preemption-Priority AVP The Preemption-Priority AVP (AVP Code TBD) is of type Unsigned32 and it indicates the priority of the new flow compared with the defending priority of previously admitted flows. Higher values represent higher priority. 3.8.2. Defending-Priority AVP The Defending-Priority AVP (AVP Code TBD) is of type Unsigned32. Once a flow is admitted, the preemption priority becomes irrelevant. Instead, its defending priority is used to compare with the preemption priority of new flows. 3.9. Admission-Priority AVP The Admission-Priority AVP (AVP Code TBD) is of type Unsigned32. The admission control priority of the flow, in terms of access to network bandwidth in order to provide higher probability of call completion to selected flows. Higher values represent higher priority. A given admission priority is encoded in this information Korhonen & Tschofenig Expires November 27, 2008 [Page 9] Internet-Draft QoS Parameters May 2008 element using the same value as when encoded in the Admission- Priority AVP defined in Section 6.2.9 of [I-D.ietf-nsis-qspec], or in the Admission Priority parameter defined in Section 3.1 of [I-D.ietf-tsvwg-emergency-rsvp]. In other words, a given value inside the Admission-Priority AVP, inside the [I-D.ietf-nsis-qspec] admission priority parameter or inside the [I-D.ietf-tsvwg-emergency-rsvp] admission priority parameter, refers to the same admission priority. 3.10. ALRP AVP The Application-Level Resource Priority (ALRP) AVP is a grouped AVP consisting of two AVPs, the ALRP-Namespace and the ALRP-Priority AVP. A description of the semantic of the parameter values can be found in [RFC4412] and in [I-D.ietf-tsvwg-emergency-rsvp]. The coding for parameter is as follows: ALRP ::= < AVP Header: TBD > { ALRP-Namespace } { ALRP-Priority } 3.10.1. ALRP-Namespace AVP The ALRP-Namespace AVP (AVP Code TBD) is of type Unsigned32. 3.10.2. ALRP-Priority AVP The Path-Jitter-STAT4 AVP (AVP Code TBD) is of type Unsigned32. [RFC4412] defines a resource priority header and established the initial registry; that registry was later extended by [I-D.ietf-tsvwg-emergency-rsvp]. 3.11. Excess-Treatment AVP The Excess-Treatment AVP is a grouped AVP consisting of two AVPs, the Treatment and the Remark-Value AVP. The coding for the Excess-Treatment AVP is as follows: Excess-Treatment ::= < AVP Header: TBD > { Excess-Treatment-Value } [ Remark-Value ] Korhonen & Tschofenig Expires November 27, 2008 [Page 10] Internet-Draft QoS Parameters May 2008 3.11.1. Excess-Treatment-Value AVP The Excess-Treatment-Value AVP (AVP Code TBD) is of type Enumerated and indicates how a QoS aware node should process out-of-profile traffic. The following values are currently defined: 0: drop 1: shape 2: remark 3: no metering or policing is permitted The default treatment in case that none is specified is that there are no guarantees to excess traffic, i.e., a QoS aware node can do what it finds suitable. When the treatment is set to 'drop', all marked traffic MUST be dropped by a QoS aware node. When the treatment is set to 'shape', it is expected that QoS parameters conveyed as part of QoS-Desired are used to reshape the traffic (for example a TMOD parameter indicated as QoS desired). When the shaping causes unbounded queue growth at the shaper traffic can be dropped. When the treatment is set to 'remark', the excess treatment parameter MUST carry the remark value. For example, packets may be remarked to drop remarked to pertain to a particular QoS class. In the latter case, remarking relates to a DiffServ-type model, where packets arrive marked as belonging to a certain QoS class, and when they are identified as excess, they should then be remarked to a different QoS Class. The Remark-Value AVP carries the information used for re- marking. If 'no metering or policing is permitted' is indicated, the QoS aware node should accept the treatment set by the sender with special care so that excess traffic should not cause a problem. To request the Null Meter [RFC3290] is especially strong, and should be used with caution. 3.11.2. Remark-Value AVP The Remark-Value AVP (AVP Code TBD) is of type Unsigned32 and contains the DSCP value the excess traffic should be remarked to. Korhonen & Tschofenig Expires November 27, 2008 [Page 11] Internet-Draft QoS Parameters May 2008 3.11.3. PHB-Class AVP The PHB-Class AVP (AVP Code TBD) is of type OctetString and is two octets long. A description of the semantic of the parameter values can be found in [RFC3140]. The coding for the values is as follows: 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 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | DSCP |0 0 0 0 0 0 0 0 0 0| (Reserved) | +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+ As prescribed in [RFC3140], the encoding for a single PHB is the recommended DSCP value for that PHB, left-justified in the 16 bit field, with bits 6 through 15 set to zero. The encoding for a set of PHBs is the numerically smallest of the set of encodings for the various PHBs in the set, with bit 14 set to 1. (Thus for the AF1x PHBs, the encoding is that of the AF11 PHB, with bit 14 set to 1.) 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | DSCP |0 0 0 0 0 0 0 0 X 0| +---+---+---+---+---+---+---+---+ PHBs not defined by standards action, i.e., experimental or local use PHBs as allowed by [RFC2474]. In this case an arbitrary 12 bit PHB identification code, assigned by the IANA, is placed left-justified in the 16 bit field. Bit 15 is set to 1, and bit 14 is zero for a single PHB or 1 for a set of PHBs. Bits 12 and 13 are zero. 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | PHD ID CODE |0 0 X 0| +---+---+---+---+---+---+---+---+ Bits 12 and 13 are reserved either for expansion of the PHB identification code, or for other use, at some point in the future. In both cases, when a single PHBID is used to identify a set of PHBs (i.e., bit 14 is set to 1), that set of PHBs MUST constitute a PHB Scheduling Class (i.e., use of PHBs from the set MUST NOT cause Korhonen & Tschofenig Expires November 27, 2008 [Page 12] Internet-Draft QoS Parameters May 2008 intra-microflow traffic reordering when different PHBs from the set are applied to traffic in the same microflow). The set of AF1x PHBs [RFC2597] is an example of a PHB Scheduling Class. Sets of PHBs that do not constitute a PHB Scheduling Class can be identified by using more than one PHBID. The registries needed to use [RFC3140] already exist. Hence, no new registry needs to be created for this purpose. 3.11.4. DSTE-Class-Type AVP The DSTE-Class-Type AVP (AVP Code TBD) is of type Unsigned32. A description of the semantic of the parameter values can be found in [RFC4124]. Currently, the values of alues currently allowed are 0, 1, 2, 3, 4, 5, 6, 7. 3.11.5. Y.1541-QoS-Class AVP The Y.1541-QoS-Class AVP (AVP Code TBD) is of type Unsigned32. A description of the semantic of the parameter values can be found in [Y.1541]. Currently, the allowed values of the Y.1541 QoS class are 0, 1, 2, 3, 4, 5, 6, 7. Class 0: Mean delay <= 100 ms, delay variation <= 50 ms, loss ratio <= 10^-3. Real-time, highly interactive applications, sensitive to jitter. Application examples include VoIP, Video Teleconference. Class 1: Mean delay <= 400 ms, delay variation <= 50 ms, loss ratio <= 10^-3. Real-time, interactive applications, sensitive to jitter. Application examples include VoIP, Video Teleconference. Class 2: Mean delay <= 100 ms, delay variation unspecified, loss ratio <= 10^-3. Highly interactive transaction data. Application examples include signaling. Korhonen & Tschofenig Expires November 27, 2008 [Page 13] Internet-Draft QoS Parameters May 2008 Class 3: Mean delay <= 400 ms, delay variation unspecified, loss ratio <= 10^-3. Interactive transaction data. Application examples include signaling. Class 4: Mean delay <= 1 sec, delay variation unspecified, loss ratio <= 10^-3. Low Loss Only applications. Application examples include short transactions, bulk data, video streaming. Class 5: Mean delay unspecified, delay variation unspecified, loss ratio unspecified. Unspecified applications. Application examples include traditional applications of default IP networks. Class 6: Mean delay <= 100 ms, delay variation <= 50 ms, loss ratio <= 10^-5. Applications that are highly sensitive to loss, such as television transport, high-capacity TCP transfers, and TDM circuit emulation. Class 7: Mean delay <= 400 ms, delay variation <= 50 ms, loss ratio <= 10^-5. Applications that are highly sensitive to loss, such as television transport, high-capacity TCP transfers, and TDM circuit emulation. 4. Extensibility This document is designed with extensibility in mind given that different organizations and groups are used to define their own Quality of Service parameters. This document provides an initial QoS profile with common set of QoS parameters. Ideally, these parameters should be used whenever possible but there are cases where additional parameters might be needed, or where the parameters specified in this document are used with a different semantic. In this case it is advisable to define a new QoS profile that may consist of new parameters in addition to parameters defined in this document or an entirely different set of parameters. To enable the definition of new QoS profiles a 8 octet registry is defined field that is represented by a 4-octet vendor and 4-octet Korhonen & Tschofenig Expires November 27, 2008 [Page 14] Internet-Draft QoS Parameters May 2008 specifier field. A QoS profile groups together a bunch of QoS parameters for usage in a specific environment. The vendor field indicates the type as either standards-specified or vendor-specific. If the four octets of the vendor field are 0x00000000, then the value is standards-specified and the registry is maintained by IANA, and any other value represents a vendor-specific Object Identifier (OID). IANA created registry is split into two value ranges; one range uses the "Standards Action" and the second range uses "Specification Required" allocation policy. The latter range is meant to be used by organizations outside the IETF. 5. IANA Considerations This section defines the registries and initial codepoint assignments, in accordance with BCP 26 RFC 2434 [RFC5226]. It also defines the procedural requirements to be followed by IANA in allocating new codepoints. IANA is requested to create the following registries listed in the subsections below. 5.1. QoS Profile The QoS Profile refers to a 64 bit long field that is represented by a 4-octet vendor and 4-octet specifier field. The vendor field indicates the type as either standards-specified or vendor-specific. If the four octets of the vendor field are 0x00000000, then the value is standards-specified and the registry is maintained by IANA, and any other value represents a vendor-specific Object Identifier (OID). The specifier field indicates the actual QoS profile. The vendor field 0x00000000 is reserved to indicate that the values in the specifier field are maintained by IANA. This document requests IANA to create such a registry and to allocate the value zero (0) for the QoS profile defined in this document. For any other vendor field, the specifier field is maintained by the vendor. For the IANA maintained QoS profiles the following allocation policy is defined: 1 to 511: Standards Action 512 to 4095: Specification Required Standards action is required to depreciate, delete, or modify existing QoS profile values in the range of 0-511 and a specification is required to depreciate, delete, or modify existing QoS profile Korhonen & Tschofenig Expires November 27, 2008 [Page 15] Internet-Draft QoS Parameters May 2008 values in the range of 512-4095. 5.2. AVP Allocations This specification assigns the values TBD1 to TBD2 from the AVP Code namespace defined in [RFC3588]. See Section 3 for the assignment of the namespace in this specification. 5.3. Excess-Treatment AVP The following values are allocated by this specification: Excess Treatment Value 0: drop Excess Treatment Value 1: shape Excess Treatment Value 2: remark Excess Treatment Value 3: no metering or policing is permitted Excess Treatment Values 4-63: Standards Action Excess Treatment Value 64-2^32-1: Reserved 5.4. DSTE-Class-Type AVP The following values are allocated by this specification: DSTE Class Type Value 0: DSTE Class Type 0 DSTE Class Type Value 1: DSTE Class Type 1 DSTE Class Type Value 2: DSTE Class Type 2 DSTE Class Type Value 3: DSTE Class Type 3 DSTE Class Type Value 4: DSTE Class Type 4 DSTE Class Type Value 5: DSTE Class Type 5 DSTE Class Type Value 6: DSTE Class Type 6 DSTE Class Type Value 7: DSTE Class Type 7 DSTE Class Type Values 8-63: Standards Action DSTE Class Type Values 64-2^32-1: Reserved 5.5. Y.1541-QoS-Class AVP The following values are allocated by this specification: Y.1541 QoS Class Value 0: Y.1541 QoS Class 0 Y.1541 QoS Class Value 1: Y.1541 QoS Class 1 Y.1541 QoS Class Value 2: Y.1541 QoS Class 2 Y.1541 QoS Class Value 3: Y.1541 QoS Class 3 Y.1541 QoS Class Value 4: Y.1541 QoS Class 4 Y.1541 QoS Class Value 5: Y.1541 QoS Class 5 Y.1541 QoS Class Value 6: Y.1541 QoS Class 6 Y.1541 QoS Class Value 7: Y.1541 QoS Class 7 Y.1541 QoS Class Values 8-63: Standards Action Y.1541 QoS Class Values 64-2^32-1: Reserved The values in the ALRP-Namespace and ALRP-Priority AV{ inside the ALRP AVP take their values from the registry created by [RFC4412] and Korhonen & Tschofenig Expires November 27, 2008 [Page 16] Internet-Draft QoS Parameters May 2008 extended with [I-D.ietf-tsvwg-emergency-rsvp] No additional actions are required by IANA by this specification. 6. Security Considerations This document does not raise any security concerns as it only defines QoS parameters. 7. Acknowledgements The authors would like to thank the NSIS QSPEC [I-D.ietf-nsis-qspec] authors (Cornelia Kappler, Jerry Ash, Attila Bader, Dave Oran), the NSIS working group chairs (John Loughney and Martin Stiemerling) and the former Transport Area Directors (Allison Mankin, Jon Peterson) for their help. We would like to thank Francois Le Faucheur, John Loughney, Martin Stiemerling, Dave Oran, An Nguyen, Ken Carlberg, James Polk, Lars Eggert, and Magnus Westerlund for their help with resolving problems regarding the Admission Priority and the ALRP parameter. 8. References 8.1. Normative References [I-D.ietf-tsvwg-emergency-rsvp] Faucheur, F., Polk, J., and K. Carlberg, "Resource ReSerVation Protovol (RSVP) Extensions for Emergency Services", draft-ietf-tsvwg-emergency-rsvp-08 (work in progress), May 2008. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2210] Wroclawski, J., "The Use of RSVP with IETF Integrated Services", RFC 2210, September 1997. [RFC2212] Shenker, S., Partridge, C., and R. Guerin, "Specification of Guaranteed Quality of Service", RFC 2212, September 1997. [RFC2215] Shenker, S. and J. Wroclawski, "General Characterization Parameters for Integrated Service Network Elements", RFC 2215, September 1997. Korhonen & Tschofenig Expires November 27, 2008 [Page 17] Internet-Draft QoS Parameters May 2008 [RFC2474] Nichols, K., Blake, S., Baker, F., and D. Black, "Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers", RFC 2474, December 1998. [RFC2597] Heinanen, J., Baker, F., Weiss, W., and J. Wroclawski, "Assured Forwarding PHB Group", RFC 2597, June 1999. [RFC3140] Black, D., Brim, S., Carpenter, B., and F. Le Faucheur, "Per Hop Behavior Identification Codes", RFC 3140, June 2001. [RFC3181] Herzog, S., "Signaled Preemption Priority Policy Element", RFC 3181, October 2001. [RFC3393] Demichelis, C. and P. Chimento, "IP Packet Delay Variation Metric for IP Performance Metrics (IPPM)", RFC 3393, November 2002. [RFC3588] Calhoun, P., Loughney, J., Guttman, E., Zorn, G., and J. Arkko, "Diameter Base Protocol", RFC 3588, September 2003. [RFC4124] Le Faucheur, F., "Protocol Extensions for Support of Diffserv-aware MPLS Traffic Engineering", RFC 4124, June 2005. [RFC4412] Schulzrinne, H. and J. Polk, "Communications Resource Priority for the Session Initiation Protocol (SIP)", RFC 4412, February 2006. [Y.1541] "Network Performance Objectives for IP-Based Services", , 2006. [Y.1571] "Admission Control Priority Levels in Next Generation Networks", , July 2006. 8.2. Informative References [I-D.ietf-nsis-qspec] Ash, G., Bader, A., Kappler, C., and D. Oran, "QoS NSLP QSPEC Template", draft-ietf-nsis-qspec-20 (work in progress), April 2008. [RFC2475] Blake, S., Black, D., Carlson, M., Davies, E., Wang, Z., and W. Weiss, "An Architecture for Differentiated Services", RFC 2475, December 1998. [RFC3290] Bernet, Y., Blake, S., Grossman, D., and A. Smith, "An Korhonen & Tschofenig Expires November 27, 2008 [Page 18] Internet-Draft QoS Parameters May 2008 Informal Management Model for Diffserv Routers", RFC 3290, May 2002. [RFC3564] Le Faucheur, F. and W. Lai, "Requirements for Support of Differentiated Services-aware MPLS Traffic Engineering", RFC 3564, July 2003. [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 5226, May 2008. [Y.1540] "Internet Protocol Data Communication Service - IP Packet Transfer and Availability Performance Parameters", , December 2002. Authors' Addresses Jouni Korhonen (editor) TeliaSonera Teollisuuskatu 13 Sonera FIN-00051 Finland Email: jouni.korhonen@teliasonera.com Hannes Tschofenig Nokia Siemens Networks Linnoitustie 6 Espoo 02600 Finland Phone: +358 (50) 4871445 Email: Hannes.Tschofenig@gmx.net URI: http://www.tschofenig.priv.at Korhonen & Tschofenig Expires November 27, 2008 [Page 19] Internet-Draft QoS Parameters May 2008 Full Copyright Statement Copyright (C) The IETF Trust (2008). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. 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Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. Korhonen & Tschofenig Expires November 27, 2008 [Page 20]