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Decnet documentation update

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shemminger 2005-06-13 18:47:56 +00:00
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ChangeLog
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2005-06-13 Steven Whitehouse <steve@chygwyn.com>
* Decnet doc's update
2005-06-07 Stephen Hemminger <shemminger@osdl.org> 2005-06-07 Stephen Hemminger <shemminger@osdl.org>
* Fix 'ip link' map to handle case where device gets autoloaded * Fix 'ip link' map to handle case where device gets autoloaded

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README.decnet
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Here are a few quick points about DECnet support... Here are a few quick points about DECnet support...
o iproute2 is the tool of choice for configuring the DECnet support for
Linux. For many features, it is the only tool which can be used to
configure them.
o No name resolution is available as yet, all addresses must be o No name resolution is available as yet, all addresses must be
entered numerically. entered numerically.
o The neighbour cache may well list every entry as having the address o Remember to set the hardware address of the interface using:
0.170. This is due to a problem that I need to sort out kernel side.
It is harmless (but don't try and use neigh add yet) just look in
/proc/net/decnet_neigh to see the real addresses for now.
o The rtnetlink support in the kernel is rather exprimental, expect a ip link set ethX address xx:xx:xx:xx:xx:xx
few odd things to happen for the next few DECnet kernel releases. (where xx:xx:xx:xx:xx:xx is the MAC address for your DECnet node
address)
if your Ethernet card won't listen to more than one unicast
mac address at once. If the Linux DECnet stack doesn't talk to
any other DECnet nodes, then check this with tcpdump and if its
a problem, change the mac address (but do this _before_ starting
any other network protocol on the interface)
o Whilst you can use ip addr add to add more than one DECnet address to an o Whilst you can use ip addr add to add more than one DECnet address to an
interface, don't expect addresses which are not the same as the interface, don't expect addresses which are not the same as the
kernels node address to work properly. i.e. You will break the DECnet kernels node address to work properly with 2.4 kernels. This should
protocol if you do add anything other than the automatically generated be fine with 2.6 kernels as the routing code has been extensively
interface addresses to ethernet cards. This option is there for future modified and improved.
link layer support, where the device will have to be configed for
DECnet explicitly.
o The DECnet support is currently self contained. You do not need the o The DECnet support is currently self contained. It does not depend on
libdnet library to use it. In fact until I've sent the dnet_pton and the libdnet library.
dnet_ntop functions to Patrick to add, you can't use libdnet.
o If you are not using the very latest 2.3.xx series kernels, don't Steve Whitehouse <steve@chygwyn.com>
try and list DECnet routes if you've got IPv6 compiled into the
kernel. It will oops.
o My main reason for writing the DECnet support for iproute2 was to
check out the DECnet routing code, so the route get and
route show cache commands are likely to be the most debugged out of
all of them.
o If you find bugs in the DECnet support, please send them to me in the
first instance, and then I'll send Alexey a patch to fix it. IPv4/6
bugs should be sent to Alexey as before.
Steve Whitehouse <SteveW@ACM.org>