Differentiated Services over Symmetric NHRP Shortcuts
draft-turner-diff-nhrp-00
| Document | Type |
Expired Internet-Draft
(individual)
Expired & archived
|
|
|---|---|---|---|
| Authors | Bernd Staegemeir , Steve Turner | ||
| Last updated | 1998-03-10 | ||
| RFC stream | (None) | ||
| Intended RFC status | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
There is a need, for relatively simple and scaleable methods of providing differentiated classes of service for IP traffic over various WAN media, to support different types of applications and specific business requirements. The Differentiated Services approach to providing quality of service (QoS) in Networks, employs a small, well-defined set of building blocks from which a variety of services may be built. A small bit-pattern in each packet in the IPv4 ''TOS octet'' or in the IPv6 ''Traffic Class octet'' is used to mark a packet to receive a differentiated forwarding treatment or per-hop behavior at each network node. IETF Working Groups will standardize a common layout for both octets, called the ''DS byte'' superseding the IPv4 TOS octet definitions or RFC 1349 [1]. The goal of this contribution is to suggest how the Next Hop Resolution Protocol (NHRP) may be extended and deployed in conjunction with the IP ToS octet (DS-Byte) to create both differentiated forwarding and differentiated class of service over an NBMA network such as ATM or Frame-Relay. In the proposed solution, any SVC created between the same two points in an NBMA network will be used bi-directionally by traffic with the same class of service. This is achieved by extending the scope of the existing NHRP protocol to include QoS information in the extensions part of both the NHRP resolution request and resolution reply, and by implementing a NBMA addressing scheme that dynamically maps CoS, to subaddresses that are unique within the NBMA network. The proposal is compliant with the NHRP specifications, and every effort is made by the proposal to build on the work currently underway within the IETF that is attempting to standardize on the use of the ToS octet (DS-byte) within the IP datagram.
Authors
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)