LCNET Aegis LCNET
NAME
lcnet - display internet routing information
SYNOPSIS
/etc/lcnet [options]
DESCRIPTION
lcnet displays the list of known networks, their distance from the
current node, the router used as the first hop from that network, and
other information.
The distance (hops) from remote networks is measured in intervening
routers. The distances are all for one-way traffic; if a network is three
hops away from yours, your requests pass through three routers to get to
that network. The responses also pass through three routers on the way
back.
The -conn option shows you the full internet topology; that is, the list
of networks and how the routers connect them together.
OPTIONS
-local (default)
Display the "First Hop" and "Hops" information for each network
in the internet. The first hop is the node ID of a router on
your network. It is the first router used in sending packets
from your network to the target network. Other routers are
also used if the target network is more than one hop away from
your own.
-full Display information showing how up to date the routing table is
(the "Age" and "Expiration" columns) in addition to the "First
hop" and "Hops" information shown by the -local option. -full
also lists inaccessible networks.
-conn Show which routers are connected to each network, and which
other networks those routers touch. This option displays the
"Touching" information.
-hw Display the type of hardware used for each of the networks.
The -conn and -hw options may take several seconds to execute
if you have a large internet.
-n node-spec
Print another node's view of the internet. The outputs produced
by -local and -full vary from node to node; -n affects these
outputs. The -n option does not affect the output produced by
the -conn or -hw options, since the hardware and connectivity
do not depend on a node's position in the internet.
-c The -c option suppresses the title over each output column. It
also fills every line of the "Network" column produced by the
-conn option, and every line of the "Hardware" column produced
by the -hw option. These format changes make it easier to use
lcnet's output as another program's input.
EXAMPLES
In this example, the node is directly connected to network C0FFEE.
Networks 5A1AD and ED1F1CE were connected in the past, but are not now
accessible (perhaps because the routers are down).
The expiration date and time for the "local" network are meaningless.
$ /etc/lcnet -full
First
Network Hop Hops Age Expiration date/time
======== ===== ===== === ===================
B020 4B6F 1 NEW 1987/06/16 14:33:21
B00B00 4B6F 2 NEW 1987/06/16 14:33:21
5A1AD 4B6F gone NEW 1987/06/16 14:33:21
C0FFEE 0 local NEW 1987/06/09 10:27:46
ED1F1CE 4B6F gone NEW 1987/06/16 14:33:21
D0D0 BAD1 1 NEW 1987/06/16 14:33:39
The "Touching" information describes your internet completely. This
example includes several kinds of information:
- Network DEFACED has one router, node 2A3B.
That router connects DEFACED to EFFACED.
- Network FACE0FF contains two routers, 31DC and 1371.
Those routers connect FACE0FF to C0C0A and C0FFEE,
respectively.
$ /etc/lcnet -conn
Touching Touching
Network Router Network
======== ======== ========
F00D 5C0B DECAF
36CF C0FFEE
5A1AD 459B C0FFEE
45BE ED1F1CE
B002E 3F0A C0FFEE
C0C0A BAD1 B00B1E
56B0 EFFACED
31DC FACE0FF
DECAF 5C0B F00D
B00B1E BAD1 C0C0A
C0FFEE 36CF F00D
459B 5A1AD
3F0A B002E
1371 FACE0FF
DEFACED 2A3B EFFACED
ED1F1CE 45BE 5A1AD
EFFACED 56B0 C0C0A
2A3B DEFACED
FACE0FF 31DC C0C0A
1371 C0FFEE
$ /etc/lcnet -conn -c
F00D 5C0B DECAF
F00D 36CF C0FFEE
5A1AD 459B C0FFEE
5A1AD 45BE ED1F1CE
B002E 3F0A C0FFEE
C0C0A BAD1 B00B1E
C0C0A 56B0 EFFACED
C0C0A 31DC FACE0FF
DECAF 5C0B F00D
B00B1E BAD1 C0C0A
C0FFEE 36CF F00D
C0FFEE 459B 5A1AD
C0FFEE 3F0A B002E
C0FFEE 1371 FACE0FF
DEFACED 2A3B EFFACED
ED1F1CE 45BE 5A1AD
EFFACED 56B0 C0C0A
EFFACED 2A3B DEFACED
FACE0FF 31DC C0C0A
FACEOFF 1371 C0FFEE
SEE ALSO
More information is available. Type
help lcnode For information on listing connected nodes