[HECnet] Adjacency listener

[Jordi Guillaumes Pons]

Hello,

As a follow up to the discussion about the maximum number of routers in an ethernet network, I have written a stupid program which listens for DECNET hello packets and counts the number of nodes of each type. It is part of this github repo:

https://github.com/jguillaumes/retroutils

The project is DecnetListenerPlus, and it is meant to be opened using the NetBeans IDE (with the C/C++ plugins) but it can be built from the command line (using make/gmake). It runs under Linux (and probably under other unix-like systems) and requires root privileges.

This is a (partial) output sample:

Endnodes: 1, L1 routers: 0, L2 routers: 0
Endnodes: 1, L1 routers: 1, L2 routers: 0
Endnodes: 1, L1 routers: 1, L2 routers: 1
Endnodes: 2, L1 routers: 1, L2 routers: 1
Endnodes: 3, L1 routers: 1, L2 routers: 1
Endnodes: 3, L1 routers: 1, L2 routers: 2
Endnodes: 3, L1 routers: 2, L2 routers: 2
Endnodes: 3, L1 routers: 2, L2 routers: 3
Endnodes: 4, L1 routers: 2, L2 routers: 3
Endnodes: 5, L1 routers: 2, L2 routers: 3
Endnodes: 5, L1 routers: 2, L2 routers: 4
Endnodes: 6, L1 routers: 2, L2 routers: 4
Endnodes: 6, L1 routers: 3, L2 routers: 4
Endnodes: 7, L1 routers: 3, L2 routers: 4
Endnodes: 7, L1 routers: 3, L2 routers: 5
Endnodes: 8, L1 routers: 3, L2 routers: 5
Endnodes: 9, L1 routers: 3, L2 routers: 5
Endnodes: 10, L1 routers: 3, L2 routers: 5
Endnodes: 11, L1 routers: 3, L2 routers: 5
Endnodes: 12, L1 routers: 3, L2 routers: 5
Endnodes: 13, L1 routers: 3, L2 routers: 5
Endnodes: 14, L1 routers: 3, L2 routers: 5
Endnodes: 15, L1 routers: 3, L2 routers: 5
Endnodes: 16, L1 routers: 3, L2 routers: 5
Endnodes: 17, L1 routers: 3, L2 routers: 5
LEVEL 1 Routers
Address:   7.61   , timer: 15
Address:   7.81   , timer: 10
Address: 19.40   , timer: 15
LEVEL 2 Routers
Address:   8.400 , timer: 15
Address: 28.41   , timer: 15
Address: 42.1022, timer: 15
Address: 47.556 , timer: 15
Address: 62.637 , timer: 15
Endnodes
Address:   1.21   , timer: 15
Address:   1.22   , timer: 15
Address:   1.301 , timer: 15
Address:   7.60   , timer: 15
Address:   7.70   , timer: 30
Address:   7.71   , timer: 15
Address:   7.72   , timer: 15
Address:   7.76   , timer: 15
Address:   8.401 , timer: 15
Address:   8.414 , timer: 15
Address:   8.444 , timer: 10
Address:   8.500 , timer: 10
Address: 14.1     , timer: 10
Address: 47.333 , timer: 10
Address: 47.559 , timer: 15
Address: 47.701 , timer: 15
Address: 62.5     , timer: 15