old-www/HOWTO/Token-Ring/qanda.html

311 lines
5.3 KiB
HTML

<HTML
><HEAD
><TITLE
>Commonly asked Questions</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.63
"><LINK
REL="HOME"
TITLE="Token-Ring mini-HOWTO"
HREF="index.html"><LINK
REL="PREVIOUS"
TITLE="VMWare and Token Ring"
HREF="vmware.html"><LINK
REL="NEXT"
TITLE="GNU Free Documentation License"
HREF="fdl.html"></HEAD
><BODY
CLASS="SECT1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>Token-Ring mini-HOWTO</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="vmware.html"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="fdl.html"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="QANDA"
>6. Commonly asked Questions</A
></H1
><P
> Here are a collection of commonly asked questions that arise from time to
time on the linux-tr mailing list. If your question isn't answered here or
elsewhere in this document, feel free to ask away on the mailing list.
</P
><DIV
CLASS="QANDASET"
><DL
><DT
>Q: <A
HREF="qanda.html#AEN601"
> DHCP doesn't work with my Token Ring adapter.
</A
></DT
><DT
>Q: <A
HREF="qanda.html#AEN606"
> I can't set the LAA on my adapter with ifconfig tr0 hw tr 4000DEADBEEF.
</A
></DT
><DT
>Q: <A
HREF="qanda.html#AEN612"
> My Linux machine is on a bridged network and I'm having connectivity
issues with machine beyond the bridge.
</A
></DT
><DT
>Q: <A
HREF="qanda.html#AEN617"
> Can I use a Linux machine to bridge between token ring and
ethernet ?
</A
></DT
><DT
>Q: <A
HREF="qanda.html#AEN622"
> OK, if I can't bridge, how do I connect my Token Ring and
ethernet networks ?
</A
></DT
></DL
><DIV
CLASS="QANDAENTRY"
><DIV
CLASS="QUESTION"
><P
><A
NAME="AEN601"
></A
><B
>Q: </B
> DHCP doesn't work with my Token Ring adapter.
</P
></DIV
><DIV
CLASS="ANSWER"
><P
><B
>A: </B
> Certain dhcp servers and clients do not work properly with token
ring drivers. This is especially true with the 2.4 kernels. During
the development of the 2.3.x series of kernels the internal type
for token ring was changed to accomodate multicast support over
token ring. The solution is to upgrade your dhcp client/server
to a version that supports token ring and/or the latest kernel
versions.
</P
></DIV
></DIV
><DIV
CLASS="QANDAENTRY"
><DIV
CLASS="QUESTION"
><P
><A
NAME="AEN606"
></A
><B
>Q: </B
> I can't set the LAA on my adapter with ifconfig tr0 hw tr 4000DEADBEEF.
</P
></DIV
><DIV
CLASS="ANSWER"
><P
><B
>A: </B
> Firstly, double check that your adapter/driver support setting the LAA,
and that you've supplied a valid LAA. Also, most drivers will only allow
this to be set before the adapter is opened onto the ring.
Again, this is related to the change in the internal type for token ring
in the 2.4 kernels. A patch is available from the
<A
HREF="http:/www.linuxtr.net"
TARGET="_top"
>web site</A
> for nettools
that fixes this and allows the LAA to be set.
</P
></DIV
></DIV
><DIV
CLASS="QANDAENTRY"
><DIV
CLASS="QUESTION"
><P
><A
NAME="AEN612"
></A
><B
>Q: </B
> My Linux machine is on a bridged network and I'm having connectivity
issues with machine beyond the bridge.
</P
></DIV
><DIV
CLASS="ANSWER"
><P
><B
>A: </B
> The token ring source routing code in the kernel uses the spanning
tree algorithm. Contact your network administrator to enable this
protocol on the bridges.
</P
></DIV
></DIV
><DIV
CLASS="QANDAENTRY"
><DIV
CLASS="QUESTION"
><P
><A
NAME="AEN617"
></A
><B
>Q: </B
> Can I use a Linux machine to bridge between token ring and
ethernet ?
</P
></DIV
><DIV
CLASS="ANSWER"
><P
><B
>A: </B
> The simply answer in no. Briding network topologies in software
is incredibly complicated and while it is possibly, nobody has
written the code to do it. If you must bridge there are several
manufacturers that produce hardware bridges (most notably Cisco).
</P
></DIV
></DIV
><DIV
CLASS="QANDAENTRY"
><DIV
CLASS="QUESTION"
><P
><A
NAME="AEN622"
></A
><B
>Q: </B
> OK, if I can't bridge, how do I connect my Token Ring and
ethernet networks ?
</P
></DIV
><DIV
CLASS="ANSWER"
><P
><B
>A: </B
> A cheap linux box with a token ring and ethernet adapter makes
an excellent router. There is no difference between setting up
a token ring/ethernet router and an ethernet/ethernet router.
You can do masquerading (NAT) and filtering on the router as
per usual. For more details see the Netfilter howto.
</P
></DIV
></DIV
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="vmware.html"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="fdl.html"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>VMWare and Token Ring</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
>&nbsp;</TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>GNU Free Documentation License</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>