[nos-bbs] NETROM REACHABILITY, INP2011 (INP3), and NRR
Jay Nugent
jjn at nuge.com
Sat Jan 9 17:24:24 EST 2021
Greetings Maiko (et al),
On Sat, 9 Jan 2021, M Langelaar wrote:
>> #define NRR /* NRR (Netrom Route Record) feature */
>
> Works for some systems (Xnet and JNOS that have it compiled in), examples :
>
> [JNOS-2.0m.5F-B1FHIM$]
> You have 101 messages - 81 new.
> (#6) >
> nrr ve3mch-8
> (#6) >
> *** route: VE4KLM-3 VE3MCH-8* VE4KLM-3
>
> If I telnet to Jack's system and I do the same to my NETROM call (that's
> important) :
>
> Telnet session 1 connected to aa6hf
>
> JNOS (aa6hf.ampr.org)
>
> login: ve4klm
> Password:
> [JNOS-2.0m.5C-B1FHIM$]
> >
> nrr ve4klm
> >
> nrr ve4klm-3
> >
> *** route: AA6HF-4 VE4KLM-3* AA6HF-4
I have been using what I call IPNR routes - IP over NetROM, by
following the steps spelled out in Ian Wade's book. It only takes a
couple lines added to AUTOEXEC.NOS to implement it.
In this example, I set up an IPNR tunnel over the NetROM network that
sits between SEOC and HGWASH jnos nodes. Then I set up IP routing over
the top of that. It works REALLY well :)
#
# IP encap over NetROM
#
# See: NOSintro page 261
# 181002 WB8TKL - First cut for SEOC
#--------------------------------------
#
# Tunnel from SEOC to HGWASH
#
route add 44/8 netrom 44.102.1.1
arp add 44.102.1.1 netrom wb8tkl-7
netrom route add EATON n8hee-5 145.76 192 EATON
#
# --- end ---
#
route add 44/8 netrom 44.102.1.1
This sets up a 44/8 route to the HGWASH box (44.102.1.1)
arp add 44.102.1.1 netrom wb8tkl-7
This sets up an ARP table entry that defines the NetROM route to
wb8tkl-7 as the hardware address/interface to use that can reach
44.102.1.1 (HGWASH)
netrom route add EATON n8hee-5 145.76 192 EATON
This sets up a NetROM route entry that tells where our NetROM neighbor
is (EATON) its NetROM callsign, value (192), and its name (EATON).
A similar IPNR entry is in the AUTOEXEC.NOS on the HGWAS jnos box,
that uses the route entry to SEOC (44.108.104.8), uses the SEOC NetROM
callsign (ws8eoc-7), etc.
We do this for any JNOS machines that *only* have a NetROM netrork
between them and the rest of the AMPRnet network. The packets *are* a bit
longer and throughput is therefore a little bit slower than IP over AX.25,
but it is not the convienience it well worth it :)
Enjoy!
--- Jay Nugent WB8TKL
o ARRL Michigan Section ASM for Digital Technologies
o Chair, Michigan Section "Digital Radio Group" (DRG)
[ www.MI-DRG.org ]
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