Red Hat Bugzilla – Bug 435785
nfs(5) man page falsely lists udp as the default nfs protocol
Last modified: 2008-07-24 16:01:49 EDT
Description of problem:
The nfs(5) mount page lists udp as the default NFS protocol.
RHEL4 uses tcp as the default NFS protocol.
Version-Release number of selected component (if applicable):
Release: Red Hat Enterprise Linux AS release 4 (Nahant Update 6)
Steps to Reproduce:
1. man 5 nfs
tcp Mount the NFS filesystem using the TCP protocol instead
of the default UDP protocol. Many NFS servers only
udp Mount the NFS filesystem using the UDP protocol. This
is the default.
Tcp should be listed as the default protocol.
Red Hat Enterprise Linux 4: System Administration Guide
Chapter 22. Network File System (NFS)
22.2.3. Using TCP
The default transport protocol for NFSv4 is TCP; however, the Red Hat Enterprise
Linux 4 kernel includes support for NFS over UDP. To use NFS over UDP, include
the -o udp option to mount when mounting the NFS-exported file system on the
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.