?? tcpip-openbsd-building-the-bridge-code.html
字號:
<!-- Copyright (C) 2009 Free Software Foundation, Inc. -->
<!-- This material may be distributed only subject to the terms -->
<!-- and conditions set forth in the Open Publication License, v1.0 -->
<!-- or later (the latest version is presently available at -->
<!-- http://www.opencontent.org/openpub/). -->
<!-- Distribution of the work or derivative of the work in any -->
<!-- standard (paper) book form is prohibited unless prior -->
<!-- permission is obtained from the copyright holder. -->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>Inclusion of bridge code</TITLE
><meta name="MSSmartTagsPreventParsing" content="TRUE">
<META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="eCos Reference Manual"
HREF="ecos-ref.html"><LINK
REL="UP"
TITLE="OpenBSD TCP/IP stack port"
HREF="tcpip-openbsd-stack-port.html"><LINK
REL="PREVIOUS"
TITLE="Building the Network Stack"
HREF="tcpip-openbsd-building-the-network-stack.html"><LINK
REL="NEXT"
TITLE="APIs"
HREF="tcpip-openbsd-tcpip-apis.html"></HEAD
><BODY
CLASS="SECT1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>eCos Reference Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="tcpip-openbsd-building-the-network-stack.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 47. OpenBSD TCP/IP stack port</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="tcpip-openbsd-tcpip-apis.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="TCPIP-OPENBSD-BUILDING-THE-BRIDGE-CODE"
>Inclusion of bridge code</A
></H1
><P
>The OpenBSD stack does not by default result in the inclusion of
the bridge code. To include bridging functionality the CDL option
CYGPKG_NET_BRIDGE must be enable . It is also possible to enable more
than one concurrent bridge. The number of bridges active in a device
is configured by the CDL option CYGNUM_NET_BRIDGES, which has a
default value of 1.</P
><P
>The default behavior of a bridge is to operate without the
spanning tree protocol. When devices are operated in this default mode
it must be ensured the network topology is loop-free. Any loops will
cause broadcast storms and general mayhem on the network. Including
spanning tree code during the build process will allow the bridge to
communicate with other bridges. They can then detect such loops and by
disabling selected interfaces break the loop. To enable spanning tree enable
the CDL option CYGPKG_NET_BRIDGE_STP_CODE.</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="tcpip-openbsd-building-the-network-stack.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ecos-ref.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="tcpip-openbsd-tcpip-apis.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Building the Network Stack</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="tcpip-openbsd-stack-port.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>APIs</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -