Network Working Group                                 R. Clements
Request for Comments:  844                            February 1983

Who Talks ICMP, too?

Survey of 18 February 1983

A survey was undertaken to determine how many hosts are able to
respond to TELNET connections from a user at a class C site. This
requires, in addition to IP and TCP, participation in gateway routing
via ICMP and handling of class C addresses.

The list of hosts was taken from RFC843, extracting only those
hosts which are listed there as accepting TELNET connections.

The tests were run on 18-Feb-83 from 3 PM to 6:30 PM EST
from a terminal concentrator located at, at BBN.
This net ( is connected to the internet through
a routing gateway, and this terminal concentrator speaks ICMP
including redirection and reporting to the user.

The connection attempts were done manually by typing the
dotted form addresses, so only three passes were made through
the table of hosts. Therefore a few may have been missed due
to being down at these times.

Summary information:

Type # OK out of % OK
---- ---- ------ ----

On net 10 77 121 63.6%
other class A 20 34 58.8%
non-class A 30 32 93.8%

Total 127 187 67.9%

Page 1

Name Address Result
---- ------- ------
ll no response
compion-vms no response
ames-tss refused
mitre OK
radc-multics OK
nbs-vms no response
usc-eclb OK
nadc OK
seismo OK
usc-isid OK
brl no response
nosc-cc OK
cca-unix OK
parc-maxc OK
purdue OK
utah-cs host unreachable
wpafb no response
afwl no response
bbn-tenexb OK
bbnf OK
ada-vax no response
afsc-ad no response
cit-20 OK
sumex-aim OK
nyu no response
mit-multics OK
utexas-11 OK
usgs1-multics OK
usgs2-multics OK
usgs3-multics OK
sri-nic OK
ucb-arpa no response
nrl no response
hi-multics OK
dtnsrdc OK
bbnt OK
nswc-dl OK
sandia OK
nlm-mcs OK
lanl-unix OK
washington OK

Page 2

ll-vlsi OK
compion no response
gunter-adam OK
cmu-cs-a OK
nbs-sdc no response
sri-kl OK
lll-mfe OK
usc-isi OK
usc-eclc OK
apg-1 OK
cca-vms refused
lbl-csam no response
wpafb-afwal no response
bbng OK
usc-isie OK
cit-vax no response
anl-mcs no response
mit-dms OK
utexas-20 OK
martin-b OK
rand-relay OK
bbn-unix OK
mit-devmultics host unreachable
dec-marlboro OK
nrl-aic OK
nalcon no response
bbn-vax OK
nswc-g no response
office-10 no response
csnet-sh OK
srijoyce no response
ucla-security OK
sri-csl OK
isi-vaxa OK
office-3 no response
sri-unix no response
usc-isif OK
afsc-dev no response
aids-unix host unreachable
rutgers OK
mit-ai OK
aerospace OK
sri-ai OK
ucb-vax no response
nswc-wo no response

Page 3

su-score OK
cmu-cs-c OK
radc-tops20 OK
sri-tsc no response
edn-unix OK
usc-ecl OK
brl-bmd no response
nprdc OK
kestrel no response
utah-20 OK
office-7 no response
mit-mc OK
okc-unix host unreachable
bbn-tenexc OK
bbna OK
sri-prmh no response
usc-isib OK
jpl-vax no response
mit-ml OK
rand-unix OK
sri-iu no response
mcclellan no response
nsrdcoa no response
bbns host unreachable
nwc-387b OK
uw-vlsi OK
s1-c OK
ll-en no response
dca-ems OK
bbn-clxx OK
bbn-rsm no response
bbn-noc2 OK
nrl-css OK
ucl-cs OK
ucl-ucl2 OK
cmu-cs-ius OK
cmu-cs-vlsi OK
cmu-cs-zog OK
cmu-cs-g OK
cmu-cs-cad OK
cmu-ri-fas OK
cmu-cs-spice OK
cmu-cs-gandalf OK
cmu-ri-isl OK
cmu-cs-speech OK
cmu-cs-unh no response
cmu-ri-arm OK
cmu-ri-isl2 OK
cmu-cs-pt OK

Page 4

dcn2 OK
dcn3 OK
dcn5 OK
dcn6 OK
ford1 OK
ford3 OK
ford4 OK
ford-lab OK
ford-ecc OK
ford-ers OK
ford-eed OK
ford-wdl1 no response
ford-wdl6 OK
umd1 OK
umd3 OK
umd5 OK
mit-csr no response
mit-ajax no response
mit-cls no response
csnet-sh OK
edn-host1 host unreachable
bbncca OK
bbnccf OK
bbnx OK
csnet-cic OK
bbn-noc OK
bbnccb OK
bbn-admin OK
bbnz OK
bbnccc OK
bbnp OK
bbn-inoc OK
bbnq OK
bbny OK
bbnccd OK
bbncci OK
bbnw OK
bbn-cd OK
ucbarpa no response
ucbcad no response
ucbernie no response
ucbmonet no response
ucbesvax no response
ucbvax no response
ucbkim no response
ucbcalder no response
ucbmatisse no response
ucbingres no response
ndre1 OK

		-- end --
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