                    Linux DECnet ͥåȥؤˤĤƤξ
                   ===========================================

1) ¾ʸˤĤ....

   o ץȤΥۡڡ
       http://www.sucs.swan.ac.uk/~rohan/DECnet/index.html - ͥξ
       http://linux-decnet.sourceforge.net/                - 桼ΰġ

   o FTP 
       ftp://ftp.sucs.swan.ac.uk/pub/Linux/DECnet/
                - Swansea إԥ塼(?) DECnet 
                  (ͥѥåޤ)
                - ftp.dreamtime.org Υ桼ΰġΥߥ顼
                - Alexey Kuznetsov  iproute2 ѥåӤ¾Υ桼
                  ƥƥΥߥ顼

       ftp://linux-decnet.sourceforge.net/pub/linux-decnet/ 
                - Patrick Caulfield Υ桼ΰġΥ֤
                  Eduardo Serrat Υͥѥå

2) ͥ

ʲΥץͭˤ褦ˡ

    CONFIG_DECNET (鷺⤬)
    CONFIG_PROC_FS (Ƥ뤫Τ뤿)
    CONFIG_SYSCTL (ڤˤ뤿)

⤷롼ݡ(ޤʤ˥ǥХåƤʤ)Ƥߤʤ
ʲΥץɬפȤʤ롣

    CONFIG_DECNET_ROUTER (롼ȤɲáǽȤ뤿)
    CONFIG_NETLINK (rtnetlink ǽȤ뤿)
    CONFIG_RTNETLINK (ͥΥ롼ƥؤȤ̿)
    CONFIG_NETFILTER (DECnet 롼ƥ󥰥ǡɬפˤʤ)

3) ޥɥ饤󥪥ץ

ͥΥޥɥ饤ϼͤʥץȤ롧

    decnet=1,2

ΤդĤοϥΡɥɥ쥹 1,2 (Ĥޤ 1.2) ΤȤǤ롣2.2.xx 
ͥ뤪 2.3.xx νΥͥǤ DECnet ɥ쥹ꤹΤˤ
Τ褦˥ޤȤʤФʤʤǶ 2.3.xx ͥǤϥڡ
ʳΤۤȤɤʸȤȤǤ롣ȤϸäȤʬ䤹
ϡ. (ԥꥪ)פ:-)

ϥΡɥפꤹ 3 ο⤢äΥץϥ󥿡
եȥΡɥפꤹ뤿̵ʤäߤ
/proc/sys/net/decnet/donf/<dev>/forwarding Ȥäꤹ롣Υե
Ǥ 1 Ĥοͤꤷơ줾 0  EndNode1  L1 롼2 
L2 롼Ǥ롣

⥸塼ФƤƱͤʥץ󤬤롣¾Υƥѥ᡼
ĤƤǤΤƱΡɥɥ쥹 /proc/sys/net/decnet/ ʲΥե
̤Ǥ롣

ߤΤȤݡȤǥХϥͥåȤ ip_gre (Generic
Routing Encapsulation Τ)Ǥ롣Ρɤ DECnet ɥ쥹ǧ
(ȼ /proc/net/decnet_dev Ǹ褦ˤʤ)ˤϡ
 DECnet ɥ쥹˴ŤƥͥåȥɤΥɥ쥹ꤵɬ
롣嵭 FTP  Ȥˤ dn2ethaddr Ȥ桼ƥƥ
롣ϻѤ٤ͥåȥɥ쥹׻ΤǤ
롣ɥ쥹ϥǥХΩ夬뤤Ω夬Ȥ ifconfig
Ѥꤹ뤳ȤǤ롣⤷ RedHat ȤäƤΤʤ顢ιԡ

    MACADDR=AA:00:04:00:03:04

ޤƱͤƤΤΤ/etc/sysconfig/network-scripts/ifcfg-eth0 ⤷
ϤʤΥͥåȥɤˤĤƤ򤷤ƤɲäƤ

ޤηϩꤵƤʤȤ DECnet ΥѥåȤ롼ƥ
ǥХ /proc/sys/net/decnet/default_device ꤹɬפ
̾ eth0 Ǥ㤨С

    echo -n "eth0" >/proc/sys/net/decnet/default_device

Τ褦ˤ롣

/proc/sys/net/decnet/ ʲ¾Υե뤬λŻ򤹤뤫ˤĤƤΥꥹ
Ȥ(嵭)ͥѥåΥå֥Ȥˤ롣

4) ¹ԻΥͥ

ͥ sysctl/proc 󥿡ե(Υץ󤬤ɤ
Ư򤹤뤫ˤĤƤξܺ٤ϥͥ(ΥѥåΤ롧)å֥ڡ
򻲾ȤΤ)̤Ƥޤ IPv4/6 ꤹΤƱ͡iproute2 ѥ
̤ƹԤ롣

iproute2 ˤĤƤΥɥȤϥѥåźդƤ롣DECnet ˤ
Ƥޤä˵ҤϤʤȾεǽ IP  DECnet ˶̤Ǥ롣
IP ɥ쥹 DECnet ɥ쥹ɤؤ뤳Ȥȵǽ¤뤳Ȥա

DECnet 롼ꤷΤʤ iproute2 ѥåɬפȤʤ롣ʳ
ǤϤ줬ϩɲäꤹͣˡǤ롣º
ˤϥ롼ƥ󥰥ǡ¸ߤơƥ󥿡եˤĤƥ롼ƥ
åꡢ˽äƥͥΥ롼ƥ󥰥ơ֥
ꤹ롣롼ƥ󥰥ǡϥ롼ƥ󥰥ѥåȤ뤿
netfilter ȤޤͥΥ롼ƥ󥰥ơ֥򹹿뤿
rtnetlink Ȥ

DECnet  raw socket layer ñ˥롼ƥ󥰥ǡ󤬻ȤäƤʤ
Ǻ줿롼ƥ󥰥ǡϸߤ netfilter (äȥ꡼Ǥ
ŪʲˡǤ)˻ȤäƤ롣

5)ưƤ뤫ɤɤäƸΤ

ʲ DECnet ѥͥ륵֥ƥबưƤ뤫ɤΤ뤿ˤϲ
򸫤ФˤĤƤδñ򼨤

   -  Ρɥɥ쥹ꤵƤ뤫
      (/proc/sys/net/decnet/node_address 򸫤ʤ)
   - פΥΡɤǤ
     (/proc/sys/net/decnet/conf/<dev>/forwarding 򸫤ʤ)
   - ƥͥåȥɤ MAC ɥ쥹 DECnet ɥ쥹б褦
     ꤵƤ뤫褯ʬʤȤϡftp ֤ˤ
     dn2ethaddr桼ƥƥȤʤ
   - ⤷嵭ĤΥƥåפꤵƤꡢͥåȥɤ
     Ω夬äƤСΥǥХ /proc/net/decnet_dev ˥ꥹȤ
     Ƥơޤ /proc/sys/net/decnet/conf ˤΥǥ쥯ȥ꤬¸ߤ
     Ǥ롣롼ץХåǥХ(lo)¸ߤƤϤǡϥΡ
     ̿ԤɬפǤ롣
   - ʤΥͥåȥ DECnet 롼С줬
     /proc/net/decnet_neigh ˸ϤǤ롣롼ʤСΥ
     ˤϼʬȤΥΡɤˤĤƤΥȥ꡼¸ߤ
     (⤷ʤСlo Ω夬äƤ뤫ɤåʤ)
   - /proc/net/decnet/_neigh ե˥ꥹȤƤʤΡɤ˸
     ʤ顢롼ؤȤĤʤ륤ͥåȥɤǥեȥǥХ
     ؤ褦ꤹɬפ롣֤ˤʤ뤬ΤȤ
     /proc/sys/net/decnet/default_device եˤԤ
   - 롼ץХå󥿡եۤ dnping/dnmirror Ȥäñʥ
     Фȥ饤ȤޤϤʤ褱С̿ԤϤ
     ʳȰʹߤˤƼºݤΥ桼ƥƥϤDECnet 饤֥
     ɬפȤʤDECnet 饤֥Ͼ嵭 ftp Ȥ
     롣
   - ǤޤưƤ褦ʤ顢˥ͥåȥΥΡɤȤ
     ̿򤷤ƤߤʤƱͤʷ̤뤫ɤĴ٤ʤ
   - ޤǤС⤦Ǥ... :-)


6) ХݡȤˤ

⤷Хȯơ𤷤褦Ȥʤ顢ְ㤤Ȥս䤬
褹뤿˼äߤȤ롣ͭפʾ(פϡִ
ŪʡפȤ֤ǡפ)ϰʲ̤:

 - ʤλȤäƤ륫ͥΥСϡ
 - ʤλȤäƤѥåΥСϡ
 - 嵭ΥƥȤɤ줯餤äƤߤޤ
 - /proc/decnet* ޤ /proc/sys/net/decnet/* ʲΥեϤɤǤ
 - ʤλȤäƤ륵ӥϡ
 - ɤΥ饤ȤȤʤä
 - ɤΤ餤ΥǡžȤä
 - ͥåȥԤƤ
 - ⤷ͥѥ˥åˤʤäΤʤ顢νϤĤ
   ksymoops ̤ߤʤС̵̣ס
 - ϺƸ뤫
 - tcpdump Ȥäƥȥ졼뤳Ȥϲǽ(աtcpdump (
   ƤΡ)С DECnet ΥѥåȤפˡΤʤ
   ǡѥåȤƤ hex ꥹȤˤȤ뤳ȤϡִŪʤȡפǤ롣
   ̾盧ˤ -x ե饰Ȥޤ -s ե饰ȤäƼĹ䤹
   ɬפ뤫Τʤ -e ե饰ȤФȤƤͭѤʾ(
   ͥåȤ MAC ɥ쥹)򶵤Ƥ롣

7)᡼󥰥ꥹ

⤷ȯ˻äƤߤȤˤĤƼ򤷤ȤХ𤹤
ȤǤ⡢ʤλäǤ᡼󥰥ꥹȤ롣ܤϤ顧

http://sourceforge.net/mail/?group_id=4993

8) ˡΧطξ

Linux DECnet ץȥϤΥɤ GPL ˽ȤȤ롣ե
ϤΤޤ(as is)󶡤ΤǤꡢŪʤżŪݾڤ
ΤǤϤʤDECnet  Compaq ҤξɸǤ롣Υեȥ Compaq
ҤʤǤϤʤCompaq Ҥο͡ǤϸѤǤʤä褦ʸ
ˤĤƤޤ󶡤ƼƤ줿Ȥ˲桹ϼհդɽ

Steve Whitehouse <SteveW@ACM.org>

(ĤҤ <coda@post.kek.jp>  Jan. 28, 2001)
