The other Johnny wrote:
> Just realized I should maybe make another comment here.
> I don't fully know how Multinet under VMS is managed, or what
> limitations there might be.
> My Multinet compatible implementation under RSX might have some issues
> communicating with VMS nodes, but in general it seems to be working just
> fine.
> The setup under RSX do not really have any problems with dynamic IP
> addresses. But it does introduce a bit of exposure, since when the other
> end has a dynamic address, Multinet will have to be able to accept
> connections from anywhere. I have been pondering whether to enable
> passwords on those links. But until now, it's not been a real problem,
> since people scanning and probing ports have no clue about DECnet over
> IP to start with.
Shameless plug or something here:
I have a program called anftunnel which as the name suggests initially
was used to handle ANF-10 packets. It has grown a bit from that, and
can do other things as well now. Amongst what it can do is:
* Set up a tunnel between two machines, with optional crypto and auth.
The passive (listening) end needs a static address, the other don't.
* Talk to an ethernet interface (via libpcap) and tunnel ethernet frames.
* Terminate a (virtual) sync line and tunnel the frames. Handle TCP and
UDP encapsulated DDCMP lines of the SIMH variety.
* Terminate a MULTINET DECnet-over-IP link. (untested, but given how
simple the encapsulation is...)
* For ANF-10, it can connect an ethernet to a sync line. This requires
slightly molesting the packets involved.
It should be possible to use this to tunnel DECnet/Multinet between two
nodes and keep the Multinet part local to each host.
A slight perversion would be to connect a Multinet link to a DDCMP one...
Source tarball can be found at:
https://www.pdc.kth.se/~bygg/tops/anftunnel.tar
> Johnny
--Johnny (another one of them)
Someone asked a while ago about DECUS software for RSX.
I've now set things up on Mim.
So pretty much all DECUS software can be found at MIM::DECUS:
While I was at it I also decided that I might as well make some of the
DEC software available as well to people on HECnet. So, there is also
MIM::KITS:, which have various layered products I have tape images for.
I would actually suggest people fetch things through TCP/IP and not
DECnet when possible, since TCP/IP is both more efficient, and also
preserves meta information better on transferred files.
(But both ways will work.)
So, have fun installing all kind of stuff. Also, for most things I also
have manuals at http://mim.update.uu.se/manuals
I have some more manuals that I have not scanned yet, and I know that
some of the manuals in there are not really well scanned, and might lack
a page or two. Let me know if you have any issues, and I'll try to help.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
Time for a new release announcement of TCP/IP for RSX-11M-PLUS.
This release contains a lot of fixes and improvements in many areas.
There are a couple of very serious bugs in TCP that is fixed in this
release which is why I really encourage people to upgrade. (They do not
happen often, but if they happen, they have a high chance of crashing
the system.)
Highlights:
- Stability and reliability improvements in TCP.
- Improved logic for TCP probing, keepalive and retransmits.
Magica (a real PDP-11/70) and Mim (an emulated PDP-11/74) have been
serving traffic for several weeks without any issues, and I think I have
finally found and fixed a very obscure problem that occasionally could
crash the system. (And both of these machines are more or less fully
exposed to the internet, so they see a *lot* of connections and random
attempts to compromise them all the time.)
Detailed information on things that have been done since the last release:
TCP:
- Correct TCP reception. It could stop the retransmit timer even if
there was still data outstanding under some circumstances.
- Bugfix in data resend in TCP. Under some circumstances the retransmit
timer stopped even though there was data to send.
- Improved TCP retransmit timers to better handle probing and keepalive.
- Improved TCP keepalive timer handling.
- Improved TCP timeout handling for closing sockets.
- Improved TCP retransmit timer restart logic in received TCP ACK
processing.
- General rework of TCP retransmit logic.
- Bugfix. In TCP TimeWait state, received FIN packets did not result in
an RST packet.
- Changed TCP FinwWait2 to use keepalive timer to probe connections.
- Improvement to TCP reception to dedup received packets also for
packets that are pending.
- Bugfix in TCP packet sending. If we ran out of IP POOL, memory got
corrupted.
- Improved handling of TCP receive window if TCP receive size is shrunk.
- Add probing of socket during closing stages, since we have no other
way to tell if the remote end is still around.
- Change how TCP decides if it should probe a connection.
- Bugfix in TCP. If a socket had no window but outstanding data, and was
closed, and other end never opened up a window (for example if the
remote end is gone), then the socket would get stuck in Fin-Wait-1.
- Changed TC driver so that user ASTs are generated immediately if there
is data to be read and the AST address is changed.
- Improve TCP options processing. Some badly formatted tcp options
packets could crash the system.
- Improved TCP handling of ICMP error packets.
UDP:
- Bugfix in UDP. If several error packets were received for a socket,
several ASTs were queued, but only one error is saved, meaning the
additional ASTs could make code try to read several times, when all
except the first would not have anything to actually read.
TELNET/TELNETD:
- Improved abort handling in telnet client.
- Changed TELNETD do do spoof notifications in a simpler way.
- Rewritten TELNETD to handle fast input without loosing characters.
- Fix mapping error under special circumstances in telnetd, which could
corrupt the system.
- Added more IAC options processing in telnet and telnetd.
DNS:
- Improved name resolution handling if no UDP available.
- Improve resolver domain I/O error handling.
RWHOD:
- Added handling of no UDP available in RWHOD.
MAILD:
- Improve MAILD handling of DECnet connections.
- Improved privilege handling in MAILD.
- Improved maild unread message function.
- Added manual holding of mails.
General:
- Improved ability to stop protocols from IFCONFIG.
As usual, the distribution is available from:
ftp://mim.update.uu.se/bqtcp.dsk
ftp://mim.update.uu.se/bqtcp.tap
ftp://ftp.update.uu.se/pub/pdp11/rsx/tcpip/tcpip.dsk
The documentation is also available through ftp on Mim, or also at
http://mim.update.uu.se/tcpipdoc
The firewall for Mim have now been removed, so no need for the alternate
ports, but Mim is still listening to the alternate ports as well.
ftp: 10021
telnet: 10023
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
Excuse the noise, but I?ve got a fragmented recollection of a strange unit of time, and my faulty memory seems to equate this with VAX and/or VMS. My google-fu has failed me (or confirmed that this is some sort of fake memory) however I thought I?d run it past the experts in here.
Does anyone know of anything strange about the unit of time, or possibly the epoch, or something else associated with time measurement (or the TOY clock or basically anything to do with time) in the DEC world? Sorry for the vagueness of the question, but hopefully someone can help :)
Ian
I'm not sure that asymmetric is the correct description but I can't think of
a better term. I am using SIMH and I have a two node cluster (with a quorum
disk) the two nodes have a common system disk.
The two nodes are RODNEL (1.1) booting from SYS0 and ADV2 (1.3) booting from
SYS2. Both are running DECnet Plus both are running Multinet for the IP
stack. At one time there was also a node (never actually a member of the
cluster called HCBVAX (1.2) it booted from SYS1 but it no longer exists.
The nodes are connected over an Ethernet and the MAC addresses are the ones
that I would expect AA-00-04-00-01-04 (1.1) and AA-00-04-00-03-04 (1.3)
HCBVAX was AA-00-04-00-02-04 (1.2)
I can login to RODNEL and "set host adv2" with no problem, I can login to
ADV2 and "set host rondel" with no problem. On each of the nodes I can "show
cluster" and I see what I expect to see with no errors. While logged in to
RODNEL the command "moni cluster" works fine. While logged in to ADV2 the
wheels seem to fall off the bus - "show cluster" is fine but "moni cluster"
isn't Any help would be appreciated. This is the information that I have
gathered so far (I am not happy with the forwarding address in the error
message from "moni proc" on ADV2 which seems to arise from RODNEL
--Dave
View of Cluster from system ID 1027 node: ADV2 22-APR-2018
22:24:50
+-----------------------------+
| SYSTEMS | MEMBERS |
+-------------------+---------|
| NODE | SOFTWARE | STATUS |
+--------+----------+---------|
| ADV2 | VMS V7.3 | MEMBER |
| RODNEL | VMS V7.3 | MEMBER |
+-----------------------------+
^Z
$
$ moni cluster
%MONITOR-I-ESTABCON, establishing connection to remote node(s)...
%%%%%%%%%%% OPCOM 22-APR-2018 22:24:56.75 %%%%%%%%%%%
Message from user SYSTEM on RODNEL
Event: Address Unreachable PDU Discard from: Node LOCAL:.RODNEL Routing,
at: 2018-04-22-23:24:56.740-04:00Iinf
Discard Reason=Destination Addrs Unknown,
Source Address=49::00-01:AA-00-04-00-03-04:21,
Forwarding Address=49::00-01:AA-00-04-00-02-04:21
eventUid FC95D640-467B-11E8-99E1-AA0004000104
entityUid 5683CC80-467B-11E8-8004-AA0004000104
streamUid 5A113900-467B-11E8-8004-AA0004000104
Still on ADV2 - NCP is odd as well:
$ mcr ncp
NCP>sho exec char
Node Volatile Characteristics as of 22-APR-2018 22:31:17
Executor node = 1.3 (ADV2)
Identification = DECnet-OSI for OpenVMS
Management version = V4.0.0
Incoming timer = 0
Outgoing timer = 0
NSP version = V4.1.0
Maximum links = 0
Delay factor = 0
Delay weight = 0
Inactivity timer = 0
Retransmit factor = 0
Routing version = V2.0.0
Type = nonrouting IV
Routing timer = 0
Subaddresses = 0
Broadcast routing timer = 0
Maximum address = 0
Maximum circuits = 0
Maximum cost = 0
Maximum hops = 0
Maximum visits = 0
Maximum area = 0
Max broadcast nonrouters = 0
Max broadcast routers = 0
Maximum path splits = 0
Area maximum cost = 0
Area maximum hops = 0
Maximum buffers = 0
Segment buffer size = 0
Buffer size = 0
Pipeline quota = 0
Alias maximum links = 0
Path split policy = Normal
Maximum Declared Objects = 0
NCP>show know nodes
Known Node Volatile Summary as of 22-APR-2018 22:31:29
Executor node = 1.3 (ADV2)
State = on
Identification = DECnet-OSI for OpenVMS
NCP>def node rodnel
Node address (1.1-63.1023): 1.1
Node name (1-6 characters): rodnel
NCP>set node rodnel all
%NCP-W-UNRCMP, Unrecognized component
NCP>set node rodnel
Node address (1.1-63.1023): 1.1
Node name (1-6 characters): rodnel
%NCP-W-UNRCMP, Unrecognized component , Node
NCP>exit
Whereas RODNEL seems happier:
NCP>sho exec char
Node Volatile Characteristics as of 22-APR-2018 20:15:29
Executor node = 1.1 (RODNEL)
Identification = DECnet-OSI for OpenVMS
Management version = V4.0.0
Incoming timer = 0
Outgoing timer = 0
NSP version = V4.1.0
Maximum links = 0
Delay factor = 0
Delay weight = 0
Inactivity timer = 0
Retransmit factor = 0
Routing version = V2.0.0
Type = nonrouting IV
Routing timer = 0
Subaddresses = 0
Broadcast routing timer = 0
Maximum address = 0
Maximum circuits = 0
Maximum cost = 0
Maximum hops = 0
Maximum visits = 0
Maximum area = 0
Max broadcast nonrouters = 0
Max broadcast routers = 0
Maximum path splits = 0
Area maximum cost = 0
Area maximum hops = 0
Maximum buffers = 0
Segment buffer size = 0
Buffer size = 0
Pipeline quota = 0
Alias maximum links = 0
Path split policy = Normal
Maximum Declared Objects = 0
NCP>sho kno node
Known Node Volatile Summary as of 22-APR-2018 20:15:37
Executor node = 1.1 (RODNEL)
State = on
Identification = DECnet-OSI for OpenVMS
Node State Active Delay Circuit Next node
Links
1.3 (ADV2) 1.1 (RODNEL)
NCP>sho node adv2 char
Node Volatile Characteristics as of 22-APR-2018 20:16:02
Remote node = 1.3 (ADV2)
Service password = 0000000000000000
Have anyone heard from Steve Davidson recently, or know of a working
address for him?
Trying to reestablish a connection.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
Hey Johnny, is the DECUS RSX library up on MIM:: somewhere?
Or does anyone else have it up and accessible via hecnet?
Thanks,
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Hi,
Any recommendations on a CISCO switch simulator that runs on Linux
(Ubuntu 17.10) and supports GRE tunneling to a real CISCO switch over
the internet?
TIA
Supratim
Mark Abene <phiber at phiber.com> wrote:
> I'm posting this here in the hopes that there are other KLH10 emulator
> users on HECnet.
There are, I am one of them.
> I've been using KLH10 with the tap patches for years and years, and idling
> has always worked fine. At some point over the recent couple of years,
> idling stopped working for me on linux (I run ubuntu 16.04.4 LTS with
> latest updates as of yesterday, on a 64-bit intel machine). My CPU is stuck
> at 100% utilization, without even starting an emulated OS (I run TOPS-20).
> In fact, as soon as I type "GO" in KLH10 and before doing anything else,
> the CPU immediately shoots to 100%. Is anyone else seeing this? In older
> versions of ubuntu/linux this didn't happen.
Handful of points:
* the idling is done by modifying the idle loop in the guest operating
system to interact with the KLH10 idler device, not by identifying
the idle loop like SIMH does.
* until the OS is up and running, there is no idling. In other words,
while at the BOOT> prompt there will be a loop consuming 100% CPU
waiting for terminal input. This is normal, and it has always been
that way.
* if you have had the same TOPS20 system running, with idling, earlier
everything points at your host os (ubuntu) no longer cooperating with
KLH10. I myself run (mostly) FreeBSD, and I have never had problems
with idling the TOPSxx systems.
* for TOPS10, there are a couple of more things to consider, one of them
is that the idler device by default is at device code 700, which can't
be accessed from the mode the -10 idle code runs in. Using 740 works.
I would look for what has changed in your host os (ubuntu) regarding
system timers and such. Your setup *should* work.
> Thanks,
> Mark
--Johnny
Time for a new release announcement of TCP/IP for RSX-11M-PLUS.
This release contains a lot of fixes and improvements in many areas.
There are a couple of very serious bugs in TCP that is fixed in this
release which is why I really encourage people to upgrade. (They do not
happen often, but if they happen, they have a high chance of crashing
the system.)
Highlights:
- Stability and reliability improvements in TCP.
- Improved HTTPD
- Improved MAILD
Magica.Update.UU.SE, which is a real PDP-11/70, have now run with the
latest release for over 3 weeks without any issues, so I think it's safe
to say that this product is now very stable. Mim.Update.UU.SE (an
emulated 11/74) have in the same time served over 7Gb of data over FTP,
HTTP and other lower volume channels. (And both of these machines are
more or less fully exposed to the internet, so they see a *lot* of
connections and random attempts to compromise them all the time.)
Detailed information on things that have been done since the last release:
TCP:
- Improved handling of received TCP push packets.
- Improved TCP ACK handling under lost packet recovery.
- Improved TCP window update handling.
- Bugfix for the condition that a socket was closed while there was
outstanding sends and the remaining window was 0 and the transmission
was not ACKed. This would cause the socket to get stuck in a pending state.
- Improved TCP write handling. The second IOSB word was previously not
set to reflect how much data was written.
- Added new TCP option for sockets to optionally return available data
at read if push was set.
- Bugfix in TCP. An internal data structure was sometimes modified when
it should not be, which could cause a system crash under rare circumstances.
HTTPD:
- Improved error handling for CGI pages.
- Improved subprocess handling for CGI module.
MAILD:
- Improved MAILD to handle broken Linux MAIL11 server.
- Improved MAILD error handling.
- Bugfix in MAIL. When composing mails, the temporary file is now
created under SYS$LOGIN.
- Added timeouts for various parts of MAIL11 processing.
Libraries:
- Improved subprocess handling in BASIC+2 library.
- Updated F77 library and documentation.
Multinet:
- Improved performance.
As usual, the distribution is available from:
ftp://mim.update.uu.se/bqtcp.dsk
ftp://mim.update.uu.se/bqtcp.tap
ftp://ftp.update.uu.se/pub/pdp11/rsx/tcpip/tcpip.dsk
The documentation is also available through ftp on Mim, or also at
http://mim.update.uu.se/tcpipdoc
The firewall for Mim have now been removed, so no need for the alternate
ports, but Mim is still listening to the alternate ports as well.
ftp: 10021
telnet: 10023
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
