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Date: Tue 30 Aug 83 09:18:18-PDT
From: NIC@SRI-NIC.ARPA
Subject: DDN Newsletter No. 30
To: DDN-NEWS-LIST4: ;
======================================================================
DDN-NEWS 30 NETWORK INFO CENTER for
30 Aug 1983 DCA DDN Program Mgmt Office
NIC@SRI-NIC (415) 859-3695
DEFENSE DATA NETWORK NEWSLETTER
(Maximum Distribution Requested. The DDN Newsletter is published by
the Network Information Center under DCA contract. For subscription,
contact NIC@SRI-NIC. Back issues obtainable by FTP from the directory
<DDN-NEWS> at SRI-NIC [10.0.0.73].)
======================================================================
Section I. OFFICIAL
Topic: TCP/IP Host Implementations - Results of
Testing for Upcoming Network Split
======================================================================
The following report was prepared by BBN after extensive testing of
host implementations of TCP/IP. The manner of testing is described
herein. While the results are not conclusive, they indicate that some
hosts and the users of those hosts will be adversely affected by the
October 4th split of the ARPANET into the MILNET/ARPANET. In
particular, hosts that currently communicate on a regular basis may
find themselves in different networks on October 4. Thus, they will
have to use a gateway to reach each other. If either host has a
faulty implementation of TCP/IP, this may be impossible.
Two things need to be stressed:
1. Only communication to or from a host with a bad TCP/IP
implementation should be affected in any way.
2. Communication through gateways (mail bridges) may be impossible
for hosts with bad TCP/IP implementations.
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Over the last month, several experiments were run at BBN to determine
the correctness of ARPANET host TCP/IP implementations. Each test was
run several times to minimize the probability that a host was down
during each test; however, it is possible that some hosts scored lower
than they deserved because they were off the network during all tests.
The first experiment was conducted entirely within the ARPANET. The
second and third experiments, however, required another network
attached to the ARPANET by more than one gateway (since the purpose of
the experiments was to test hosts' abilities to talk through gateways;
see below). BBN has its own ARPANET-like network called the "BBNNET"
which is currently connected to the ARPANET by three gateways. One of
these gateways, the BBN-GATEWAY, is known to the rest of the internet;
it is the gateway which is normally used by traffic between the BBNNET
and the ARPANET. The combination of the ARPANET, the BBNNET, and the
three gateways was used as the testbed for these inter-network
experiments.
There were three experiments. The purpose of the first, Experiment A,
was to determine which hosts are unable to talk TCP even in the
simplest circumstances. From an ARPANET host, an FTP connection was
opened to every ARPANET host (not including TACs, gateways, or secure
hosts). The remote FTP server was then asked for "help", which causes
half a screen or so of text to be sent from the remote host to the
testing host. The purpose of this was simply to cause a little
traffic to flow on the FTP connection. Then the connection was
closed. This test is the simplest possible in that it does not
require the hosts to talk through a gateway or to use ICMP. Hosts
which failed this test are labelled "4" in the following list. These
hosts were excluded from other experiments.
The purpose of Experiment B was to determine which hosts are unable to
talk TCP to a host in another network. From a BBNNET host, the same
FTP experiment was repeated. Hosts failing to sustain the FTP
conversation required by this test are labelled "3" in the following
list. These hosts can talk to hosts in their own network, but not to
hosts in other networks. These hosts were excluded from Experiment C.
The purpose of Experiment C was to determine which hosts deal
incorrectly with redirect messages. This experiment was just like
Experiment B, with one complication. The BBN gateway was told to
redirect all ARPANET hosts to another gateway, "Bridge", that also
connects the ARPANET and the BBNNET. A program called "HTM" (Host
Traffic Matrix) was run in the Bridge during this experiment. HTM
records the source and destination of every datagram that passes
through the gateway. Thus, after running Experiment C, the HTM
results in the Bridge listed every host that obeyed the redirects.
HTM was also run in the BBN gateway during this experiment, and the
results were used as further proof that some hosts disregarded the
redirects altogether. Some hosts failed this test because even though
they did not "choke" on the redirects and could carry the FTP exchange
to completion, they did not pass any traffic through the Bridge (they
ignored the redirects). Other hosts failed this test because they
died or hung the FTP connection after receiving one or more redirects.
Hosts failing this experiment are labelled "2". Hosts passing this
experiment are labelled "1".
In summary, of 190 hosts tested, 98 scored "1" (51%), 28 scored "2"
(15%), 23 scored "3" (12%), and 41 scored "4" (22%). Since these
tests were very simple and did not exercise all capabilities of TCP
(for example, retransmission of lost datagrams) these results are in
no way proof that all "1" hosts have perfectly correct TCP
implementations.
10.0.0.1 UCLA-CS VAX-11/750 LOCUS 1
10.1.0.1 UCLA-CCN IBM-370/3033 OS/MVS 1
10.2.0.1 UCLA-LOCUS VAX-11/750 LOCUS 1
10.3.0.1 UCLA-ATS VAX-11/750 LOCUS 1
10.0.0.2 SRI-NSC11 PDP-11/40 UNIX 4
10.1.0.2 SRI-KL DEC-1090T TOPS20 1
10.2.0.2 SRI-CSL FOONLY-F2 TENEX 1
10.3.0.2 SRI-TSC PDP-11/44 UNIX 2
10.0.0.3 NOSC-CC VAX-11/750 UNIX 1
10.2.0.3 LOGICON PDP-11/45 UNIX 4
10.3.0.3 NPRDC VAX-11/780 UNIX 1
10.0.0.4 UTAH-CS VAX-11/750 UNIX 2
10.3.0.4 UTAH-20 DEC-2060T TOPS20 1
10.0.0.5 BBNF DEC-2040T TOPS20 1
10.1.0.5 BBNG DEC-2060T TOPS20 1
10.3.0.5 BBNA DEC-2050T TOPS20 1
10.0.0.6 MIT-MULTICS HONEYWELL-DPS MULTICS 1
10.1.0.6 MIT-DMS DEC-1040 ITS 1
10.2.0.6 MIT-AI-RESERVED 4
10.3.0.6 MIT-ML DEC-10 ITS 1
10.1.0.7 RAND-RELAY VAX-11/750 UNIX 1
10.3.0.7 RAND-UNIX VAX-11/750 UNIX 1
10.0.0.8 NRL VAX-11/750 UNIX 2
10.1.0.8 NRL-AIC VAX-11/780 UNIX 1
10.2.0.8 NSWC-WO VAX-11/750 UNIX 1
10.3.0.8 NRL-TOPS10 DEC-10 TOPS10 4
10.6.0.8 NRL-ARCTAN PDP-11/40 RSX11 4
10.7.0.8 NRL-CSS VAX-11/780 UNIX 1
10.0.0.9 HARV-10 DEC-10 TOPS10 1
10.2.0.9 YALE VAX-11/750 UNIX 1
10.0.0.10 LL PDP-11/44 UNIX 1
10.1.0.10 LL-VLSI VAX-11/780 UNIX 1
10.2.0.10 LL-XN PDP-11/70 UNIX 3
10.3.0.10 LL-11 PDP-11/45 UNIX 4
10.4.0.10 LL-EN PDP-11/44 UNIX 2
10.0.0.11 SU-AI DEC-1080 WAITS 1
10.3.0.11 SU-SCORE DEC-2060 TOPS20 1
10.0.0.12 COMPION-VMS VAX-11/750 VMS 2
10.1.0.13 GUNTER-ADAM DEC-2060 TOPS20 1
10.0.0.14 CMU-CS-B DEC-1050 TOPS10 1
10.1.0.14 CMU-CS-A DEC-1080 TOPS10 1
10.3.0.14 CMU-CS-C DEC-2060 TOPS20 1
10.0.0.15 ROCHESTER VAX-11/750 UNIX 3
10.0.0.16 AMES-TSS IBM-360/67 TSS/360 2
10.2.0.16 AMES-VMSA VAX-11/780 VMS 2
10.3.0.16 AMES-VMSB VAX-11/780 VMS 2
10.4.0.16 AMES-UNIXA VAX-11/780 UNIX 4
10.5.0.16 AMES-UNIXB VAX-11/780 UNIX 4
10.0.0.17 MITRE BBN-C/70 UNIX 1
10.4.0.17 MITRE-LAN 3
10.0.0.18 RADC-MULTICS HONEYWELL-DPS MULTICS 1
10.3.0.18 RADC-TOPS20 DEC-2040T TOPS20 1
10.5.0.18 RADC-UNIX PDP-11/45 UNIX 4
10.0.0.19 NBS-VMS VAX-11/780 VMS 2
10.1.0.19 NBS-SDC VAX-11/780 VMS 2
10.2.0.19 NBS-UNIX PDP-11/45 UNIX 4
10.3.0.19 NBS-PL PDP-11/70 UNIX 4
10.0.0.20 CCTC PDP-11/70 UNIX 4
10.3.0.20 EDN-UNIX PDP-11/70 UNIX 2
10.4.0.20 DCA-EMS BBN-C/70 UNIX 1
10.0.0.21 LLL-TIS PDP-11/70 UNIX 4
10.1.0.21 LLL-MFE DEC-1090 TOPS10 1
10.2.0.21 LLL-ZDIVISION 4
10.0.0.22 ISI-SPEECH11 PDP-11/45 EPOS 4
10.1.0.22 USC-ISI DEC-1090T TOPS20 1
10.2.0.22 USC-ISIC DEC-2060 TOPS20 1
10.0.0.23 USC-ECLB DEC-1090B TOPS20 1
10.1.0.23 USC-ECLC DEC-1090B TOPS20 1
10.3.0.23 USC-ECL DEC-1090B TOPS20 1
10.0.0.24 NADC VAX-11/780 UNIX 1
10.3.0.24 WHARTON-10 PLURIBUS VDA 4
10.0.0.25 SEISMO VAX-11/780 UNIX 2
10.0.0.27 USC-ISID DEC-2060T TOPS20 1
10.1.0.27 ISI-PNG11 PDP-11/40 ELF 4
10.2.0.27 ISI-VAXA VAX-11/780 UNIX 1
10.0.0.28 ARPA-DMS LSI-11/3 MOS 2
10.3.0.28 ARPA-PNG11 PDP-11/34 EPOS 4
10.0.0.29 BRL PDP-11/70 UNIX 2
10.1.0.29 APG-1 BBN-C/70 UNIX 1
10.0.0.31 CCA-UNIX VAX-11/780 UNIX 3
10.1.0.31 CCA-VMS VAX-11/780 VMS 3
10.0.0.32 PARC-MAXC MAXC TENEX 1
10.3.0.32 KESTREL FOONLY-F3 TENEX 3
10.0.0.34 LBL-NMM VAX-11/780 VMS 2
10.1.0.34 LBL-CSAM VAX-11/780 UNIX 2
10.1.0.35 NOSC-TECR VAX-11/780 VMS/EUNICE 4
10.4.0.35 NOSC-F4 FOONLY-F4 FOONEX 4
10.0.0.37 PURDUE VAX-11/780 UNIX 1
10.1.0.38 BRAGG-STA1 PDP-11/34 ELF 4
10.0.0.43 OFFICE-1 FOONLY-F4 TENEX 1
10.1.0.43 OFFICE-2 FOONLY-F4 TENEX 1
10.2.0.43 OFFICE-3 FOONLY-F3 TENEX 3
10.3.0.43 OFFICE-7 FOONLY-F3 TENEX 3
10.0.0.44 MIT-XX DEC-2060T TOPS20 1
10.2.0.44 MIT-TSTGW PDP-11 MOS 4
10.3.0.44 MIT-MC DEC-1080 ITS 1
10.1.0.45 PICA VAX-11/780 UNIX 2
10.0.0.46 COLLINS-PR PDP-11/34 ELF 4
10.3.0.46 OKC-UNIX PDP-11/70 UNIX 4
10.0.0.47 WPAFB PDP-11/50 RSX11M 3
10.1.0.47 WPAFB-AFWAL PLURIBUS VDA 1
10.1.0.48 AFWL PDP-11/50 RSX11M 3
10.0.0.49 BBNB DEC-10 TENEX 1
10.3.0.49 BBNC DEC-10 TENEX 1
10.4.0.49 BBN-CLXX BBN-C/70 UNIX 1
10.2.0.51 SRI-UNIX PDP-11/70 UNIX 2
10.0.0.52 ADA-VAX VAX-11/780 VMS 3
10.1.0.52 USC-ISIE DEC-1090T TOPS20 1
10.2.0.52 USC-ISIF DEC-1090T TOPS20 1
10.3.0.52 USC-ISIB DEC-1090T TOPS20 1
10.0.0.53 AFSC-AD PDP-11/45 RSX11M 3
10.2.0.53 AFSC-DEV PDP-11/44 RSX11M 3
10.4.0.53 NCSC VAX-11/780 UNIX 3
10.5.0.53 MARTIN PDP-11/45 RSX 4
10.0.0.54 CIT-20 DEC-2060 TOPS20 1
10.1.0.54 CIT-VAX VAX-11/780 UNIX 1
10.2.0.54 ACC PDP-11/70 UNIX 4
10.3.0.54 JPL-VAX VAX-11/780 VMS 2
10.1.0.55 ANL-MCS VAX-11/780 UNIX 3
10.0.0.56 SUMEX-AIM DEC-2060 TOPS20 1
10.1.0.56 SU-DSN VAX-11/780 UNIX 4
10.2.0.56 AIDS-UNIX VAX-11/750 UNIX 1
10.0.0.57 TYCHO PDP-11/34 UNIX 4
10.0.0.58 NYU VAX-11/780 UNIX 1
10.1.0.58 BNL PDP-11/44 UNIX 2
10.2.0.58 RUTGERS DEC-2060T TOPS20 1
10.0.0.61 STL-HOST1 DEC-2040 TOPS20 1
10.1.0.61 ALMSA-1 VAX-11/750 UNIX 4
10.0.0.62 UTEXAS-11 PDP-11/70 UNIX 2
10.1.0.62 UTEXAS-20 DEC-2060 TOPS20 1
10.2.0.62 UTEXAS-780 VAX-11/780 4
10.1.0.64 MARTIN-B VAX-11/750 VMS 3
10.3.0.64 ROBINS-UNIX PDP-11/45 UNIX 4
10.0.0.65 AFSC-SD DEC-2020T TOPS20 4
10.2.0.65 AEROSPACE VAX-11/780 UNIX 1
10.1.0.66 AFGL PDP-11/50 RSX11M 3
10.3.0.66 MITRE-BEDFORD VAX-11/780 UNIX 1
10.0.0.67 AFSC-HQ DEC-2040T TOPS20 1
10.0.0.68 USGS1-MULTICS H-60/68 MULTICS 1
10.2.0.68 USGS1-AMDAHL AMDAHL-V7 IBM/VMS 4
10.0.0.69 USGS2-MULTICS H-60/68 MULTICS 2
10.0.0.70 USGS3-MULTICS H-6880 MULTICS 4
10.2.0.70 USGS3-VMS VAX-11/780 VMS 4
10.1.0.72 BBN-UNIX BBN-C/70 UNIX 1
10.0.0.73 SRI-NIC FOONLY-F4 TENEX 1
10.2.0.73 SRI-AI DEC-2060 TOPS20 1
10.3.0.73 SRI-IU VAX-11/780 VMS 2
10.4.0.73 SRI-SPAM-TEST VAX-11/780 UNIX 4
10.0.0.74 SIMTEL20 DEC-2040T TOPS20 1
10.1.0.74 WSMR70A BBN-C/70 UNIX 1
10.3.0.74 WSMR70B BBN-C/70 UNIX 1
10.3.0.75 YUMA 1
10.1.0.77 MIT-DEVMULTICS H-68/80 MULTICS 2
10.3.0.77 MIT-OZ DEC-2060 TOPS20 4
10.0.0.78 UCB-ARPA VAX-11/780 UNIX 1
10.2.0.78 UCB-VAX VAX-11/750 UNIX 1
10.3.0.78 MCCLELLAN PDP-11/70 UNIX 4
10.0.0.79 DEC-2136 DEC-2060T TOPS20 2
10.1.0.79 DEC-MARLBORO DEC-2060T TOPS20 1
10.0.0.80 HI-MULTICS H68/80 MULTICS 2
10.0.0.81 NEMS VAX-11/750 UNIX 1
10.1.0.81 NALCON VAX-11/750 UNIX 1
10.3.0.81 NSRDCOA VAX-11/780 UNIX 1
10.0.0.82 BBNT BBN-C/70 UNIX 1
10.1.0.82 BBN-VAX VAX-11/780 UNIX 1
10.3.0.82 DDN1 BBN-C/70 UNIX 1
10.6.0.82 BBN-NOC2 BBN-C/70 UNIX 1
10.0.0.83 MINET-LON BBN-C/70 UNIX 1
10.0.0.84 NSWC-DL PDP-11/40 RSX11M 3
10.1.0.84 NSWC-G VAX-11/750 UNIX 3
10.0.0.85 NWC-387A VAX-11/750 VMS 2
10.3.0.85 NWC-387B VAX-11/780 VMS 2
10.0.0.87 SANDIA DEC-2060T TOPS20 1
10.0.0.88 NLM-MCS DEC-2060T TOPS20 1
10.0.0.90 LANL VAX-11/750 UNIX 1
10.0.0.91 WASHINGTON DEC-2060 TOPS20 1
10.3.0.91 UW-VLSI VAX-11/780 UNIX 1
10.2.0.92 NUSC-NPT PDP-11/70 UNIX 4
10.3.0.92 NUSC PDP-11/40 ELF 3
10.0.0.93 OFFICE-8 FOONLY-F4 TENEX 3
10.1.0.93 OFFICE-10 FOONLY-F3 TENEX 1
10.2.0.93 OFFICE-15 FOONLY-F4 TENEX 1
10.1.0.94 UWISC VAX-11/750 UNIX 1
10.1.0.95 S1-A FOONLY-F2 WAITS 1
10.2.0.95 S1-B VAX-11/750 UNIX 4
10.3.0.95 S1-C VAX-11/750 UNIX 1
10.0.0.96 UDEL-RELAY VAX-11/750 UNIX 1
10.1.0.96 UDEL-TCP VAX-11/750 UNIX 4
10.2.0.96 UDEL-EE VAX-11/780 UNIX 3
10.3.0.96 CORNELL VAX-11/780 UNIX 3
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