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WebNFS Client Specification (RFC2054)

IP.com Disclosure Number: IPCOM000002605D
Original Publication Date: 1996-Oct-01
Included in the Prior Art Database: 2019-Feb-16
Document File: 16 page(s) / 21K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

B. Callaghan: AUTHOR

Related Documents

10.17487/RFC2054: DOI

Abstract

This document describes a lightweight binding mechanism that allows NFS clients to obtain service from WebNFS-enabled servers with a minimum of protocol overhead. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 10% of the total text.

Network Working Group B. Callaghan Request for Comments: 2054 Sun Microsystems, Inc. Category: Informational October 1996

WebNFS Client Specification

Status of this Memo

This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Abstract

This document describes a lightweight binding mechanism that allows NFS clients to obtain service from WebNFS-enabled servers with a minimum of protocol overhead. In removing this overhead, WebNFS clients see benefits in faster response to requests, easy transit of packet filter firewalls and TCP-based proxies, and better server scalability.

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . 2 2. TCP vs UDP . . . . . . . . . . . . . . . . . . . . . . . . 2 3. Well-known Port . . . . . . . . . . . . . . . . . . . . . 2 4. NFS Version 3 . . . . . . . . . . . . . . . . . . . . . . 3 4.1 Transfer Size . . . . . . . . . . . . . . . . . . . . . 3 4.2 Fast Writes . . . . . . . . . . . . . . . . . . . . . . 4 4.3 READDIRPLUS . . . . . . . . . . . . . . . . . . . . . . 4 5. Public Filehandle . . . . . . . . . . . . . . . . . . . . 5 5.1 NFS Version 2 Public Filehandle . . . . . . . . . . . . 5 5.2 NFS Version 3 Public Filehandle . . . . . . . . . . . . 5 6. Multi-component Lookup . . . . . . . . . . . . . . . . . . 6 6.1 Canonical Path vs. Native Path . . . . . . . . . . . . . 6 6.2 Symbolic Links . . . . . . . . . . . . . . . . . . . . . 7 6.2.1 Absolute Link . . . . . . . . . . . . . . . . . . . . 8 6.2.2 Relative Link . . . . . . . . . . . . . . . . . . . . 8 6.3 Filesystem Spanning Pathnames . . . . . . . . . . . . . 9 7. Contacting the Server . . . . . . . . . . . . . . . . . . 9 8. Mount Protocol . . . . . . . . . . . . . . . . . . . . . . 11 9. Exploiting Concurrency . . . . . . . . . . . . . . . . . . 12 9.1 Read-ahead . . . . . . . . . . . . . . . . . . . . . . . 12 9.2 Concurrent File Download . . . . . . . . . . . . . . . . 13 10. Timeout and Retransmission . . . . . . . . . . . . . . . . 13 11. Bibliography . . . . . . . . . . . . . . . . . . . . . . . 15 12. Security Considerations . . . . . . . . . . . . . . . . . 16

Callaghan Informational [Page 1]

RFC 2054 WebNFS Client Specification October 1996

13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . 16 14. Author’s Address . . . . . . . . . . . . . . . . . . . . . 16

1. Introduction

The NFS protocol provides access to shared filesystems across networks. It is designed to be machine, operating system, network architecture, and transport protocol independent. The protocol currently exists in two versions: version 2 [RFC1094] and version 3 [RFC1813], both built on Sun RPC [RFC1831] at its associated eXternal Data Representation (XDR) [RFC1832] and Binding Protocol [RFC1833].

WebNFS provides additional semantics that can be applied to NFS version 2 and 3 to eliminate the overhead of PORTMAP and MOUNT protocols, make the...

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