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- Date: Tue, 22 Feb 94 04:30:05 PST
- From: Advanced Amateur Radio Networking Group <tcp-group@ucsd.edu>
- Errors-To: TCP-Group-Errors@UCSD.Edu
- Reply-To: TCP-Group@UCSD.Edu
- Precedence: Bulk
- Subject: TCP-Group Digest V94 #48
- To: tcp-group-digest
-
-
- TCP-Group Digest Tue, 22 Feb 94 Volume 94 : Issue 48
-
- Today's Topics:
- Proxy ARP for non-NOS systems? (2 msgs)
- TNC3s/4 from Germany (again)
-
- Send Replies or notes for publication to: <TCP-Group@UCSD.Edu>.
- Subscription requests to <TCP-Group-REQUEST@UCSD.Edu>.
- Problems you can't solve otherwise to brian@ucsd.edu.
-
- Archives of past issues of the TCP-Group Digest are available
- (by FTP only) from UCSD.Edu in directory "mailarchives".
-
- We trust that readers are intelligent enough to realize that all text
- herein consists of personal comments and does not represent the official
- policies or positions of any party. Your mileage may vary. So there.
- ----------------------------------------------------------------------
-
- Date: Mon, 21 Feb 1994 16:58:55 -0600 (CST)
- From: lcz@dptspd.sat.datapoint.com (Lee Ziegenhals)
- Subject: Proxy ARP for non-NOS systems?
- To: tcp-group@ucsd.edu, gateways@mpg.phys.hawaii.edu
-
- >NMSU networking does not know of a way to make a SUN UNIX system perform
- >such a proxy ARP for my gateway. Also, the Cisco routers (according to
- >networking) will only proxy ARP to the 'other' side of the router (that
- >the gateway is not on!).
-
- Tim,
-
- Cisco routers can do this. Have your network staff check out the "alias"
- keyword on the Cisco "arp" command. For example:
-
- arp 199.199.199.199 0800.0900.1834 arpa alias
- ^^^^^
-
- >Anyone out there know of what kind of systems can perform a proxy ARP for
- >my NOS? Is there anything written to run on a SUN UNIX system to perform a
- >proxy ARP?
-
- If you have any SVR4 systems you can use the "pub" option on the arp
- command:
-
- arp -s 199.199.199.199 08:00:09:00:18:34 pub
- ^^^
-
- Dunno about other types of systems, but look for something like the "pub"
- option on the arp command.
-
- Lee, N5LYT
-
- ------------------------------
-
- Date: Mon, 21 Feb 1994 15:02:58 -0700 (MST)
- From: Tim Baggett <wbaggett@NMSU.edu>
- Subject: Proxy ARP for non-NOS systems?
- To: tcp-group@ucsd.edu
-
- I am trying to find something on the New Mexico State University campus to
- perform a proxy ARP for my gateway system. I want to configure the
- ethernet packet driver on my NOS gateway so that it will not see
- broadcasts on the ethernet. This is an attempt to stop the memory loss and
- interrupt buffer fails.
-
- If I stop all the broadcast packets from being sent to NOS, then I need
- some other machine to respond to ARP REQUESTS to the gateway IP address
- over the ethernet. This is easy to do for NOS, but unfortunaly I think NOS
- is well ahead of a lot of other networking stuff as far as features are
- (says something about what the devolopers have done for NOS!).
-
- NMSU networking does not know of a way to make a SUN UNIX system perform
- such a proxy ARP for my gateway. Also, the Cisco routers (according to
- networking) will only proxy ARP to the 'other' side of the router (that
- the gateway is not on!).
-
- Anyone out there know of what kind of systems can perform a proxy ARP for
- my NOS? Is there anything written to run on a SUN UNIX system to perform a
- proxy ARP?
-
- Thanks & 73,
- Tim, AA5DF
-
- NMSUGW gateway administrator and chief repair man.
-
- ********************************************************************
- Tim Baggett, AA5DF Electrical Engineering Student
- New Mexico State University
- Internet: WBAGGETT@NMSU.EDU
- AMPR: AA5DF@NMSUGW.AMPR.ORG US Snail: 1805 Rentfrow Apt #1
- (When on) AA5DF.AMPR.ORG Las Cruces, NM 88001
- ********************************************************************
-
- ------------------------------
-
- Date: Mon, 21 Feb 94 19:27:16 GMT
- From: Jan Schiefer <jas@hplb.hpl.hp.com>
- Subject: TNC3s/4 from Germany (again)
- To: tcp-group@ucsd.edu
-
- Hi,
-
- a while ago I promised to post some data about the german TNC3s and TNC4.
- I did so for the TNC3s, but not for the TNC4. In the meantime, I have
- found an excellent comparison between the two in the Packet Radio BBS
- system, which I'd like to repost here. It was written by Chris, PE1NIB.
-
- Cheers,
-
- Jan
-
- ------------------------------------------------------------------------------
-
-
- Compare TNC3 <---> TNC4 (Fast Amateur Link Controller)
- -------------------------------------------------------
-
-
- ----------------------------------------------------------------
- | TNC3 | TNC4 (FALCon) |
- ----------------------------------------------------------------------------
- CPU | MC68302 (MC68000 core + | NEC v25+ (Intel 80188 alike)|
- | On-Chip-RISC-Controller) | |
- ----------------------------------------------------------------------------
- Clock | 15MHZ | 10MHZ |
- ----------------------------------------------------------------------------
- Data-Bus | 32 bits intern/16bits extern | 16bits intern/8bits extern |
- ----------------------------------------------------------------------------
- RAM | 64kb standard (Max. 2mb) (1) | 256kb standard (Max. 1mb) |
- ----------------------------------------------------------------------------
- ROM | Standard 256kb (max. 1mb) | standard 256kb (max. 512kb) |
- ----------------------------------------------------------------------------
- Modemports | Max. 2 | Max. 4 |
- ----------------------------------------------------------------------------
- I/O ports | v24, Highspeedbus to operate in| 2 * v24, SCSI, A/D conv., |
- | a Digipeater Network as a Dual | I/O-Ports (DCF clock e.g.) |
- | Node Controller | LCD display option |
- ----------------------------------------------------------------------------
- Hardware | RealTimeClock | RealTimeClock |
- ----------------------------------------------------------------------------
- Connectors | 100% TNC2 compatible | 96-pins conn. (2) |
- ----------------------------------------------------------------------------
- Term. bdrate| max. 115.2 kbaud | max. 115.2 kbaud |
- ----------------------------------------------------------------------------
- HDLC | > 1 Mb/s | > 1 Mb/s |
- ----------------------------------------------------------------------------
- | Special TNC3 operating System | |
- | including a RAMdisk. | |
- Softw. | TF2.6/Turbo Firmware 1.4 (dama)| TF,Extended Hostmode, |
- | RSKISS, SMACK (tcpip e.g.) | KISS mode,SMACK (3) |
- | TNC3BOX 1.0 (PMS) (dama) (3) | - |
- | NetNode (Thenet alike) | DigiWare (FlexNet alike) |
- Source | AZTEC ANSI-C-cross-compiler | Borland PASCAL, Borland C++,|
- | PureC/TurboC (atari ST) | 80286-Assembler |
- ----------------------------------------------------------------------------
- Softw. downl| Downloadable into RAM (265kb!) | Downloadable into RAM |
- | (battery backup) | (Battery backup) |
- ----------------------------------------------------------------------------
- LED indicat.| PWR, CON, STA, DCD, PTT | STA, DCD, PTT |
- ----------------------------------------------------------------------------
- powersupply | 12v / 60...90mA | 12v / aprox. 250mA |
- | Without modems | Without modems |
- ----------------------------------------------------------------------------
- Dimensions | 175 * 125mm | 160 * 100mm (Euro format) |
- ----------------------------------------------------------------------------
- Available | Only assembled | PCB, kit or assembled (*) |
- ----------------------------------------------------------------------------
- User guide | German, Englisch version soon | German |
- ----------------------------------------------------------------------------
- Modems | 2 seperate modems (80*120mm) | 4-way modem-card (5) |
- (with DCD) | AFSK 1200bd, 9600bd FSK modem | TCM3105, 2*FSK and AM7911 |
- ----------------------------------------------------------------------------
- developed by| Hardw: Roland, DG8GAD@DB0KCP | Hardw: Werner, DG3DBI@DB0IZ |
- | Softw: Jimy, DL1GJI@OE9XPI | Softw. Walter, DG9EP@DB0IZ |
- ----------------------------------------------------------------------------
- in use at | DB0ONA (tokenring) I DB0DLG, DB0IZ, DB0JES, |
- | DB0LV (single board version) I DB0KV, DB0OE, DB0ME, DB0PKE |
- | DB0HHN (High-Speed-Bus) | |
- ----------------------------------------------------------------------------
- Special | TF1.40/TNC3BOX have a 'low- | Parms are extra stored into |
- remark | power-mode' to reduce | a EEprom. |
- | RF radiation. | A fast SCSI-port for linking|
- | | more Falcons or to Computer |
- ----------------------------------------------------------------------------
-
- (*) There are special no smd-parts used, to keep it easy to assemble it.
- (still need some solder experience ofcourse)
-
- (1) Normally 1Mb, but you can add another 1MB "piggyback".
-
- (2) All connections are made via this 96-pins connector (DIN 41612),
- and therefore the PCB can be easily build into a 19" rack such as used
- sometimes for NODE-systems.
-
- (3) TNC4: Parallel operation from KISS/SMACK and HOSTMODE at all 4 HF-Ports.
-
- TNC3: RSKISS supports parallel operation on both HF-Ports. (for
- TCP/IP-Operation e.g.)
-
- TNC3+TNC4: Cross-digipeating can be used by other stations without any
- terminal-program in hostmode (SP/GP/DP e.g.) started.
-
- (4) To use the TNC3BOX/NetNode you must have at least 256kb RAM installed!
- Max 4 users at BOX, runs at the same time with hostmode.
- There is a special Eprom avail. for Single Board Node (standalone)
- for up to 3 Entry's/links.
-
- (5) Baudrate from this modemcard is controllable by software! (600bd..76,8kbd)
-
- Ofcourse are both TNC's usable with others modems. (df9ic FSK-modem e.g.)
-
-
- For both TNC's they still have software/hardware (modems) in development.
- (with avail. sources you even can write your own programs as you like/can.)
- ----------------------------------------------------------------------------
-
- Okay..this was all, if you have technical questions about these
- TNC's you'll find the packet adresses above.
-
- I need to say i don't own a TNC3 or TNC4, so all these specs are as best
- as i could get them, but i think right ok....
- (thanks dg8gad, dg9ep and dg3dbi for the extra info)
-
- 73's Chris de PE1NIB @ PI8AIR.#GLD.NLD.EU - Wijchen - jo21ut (c) 1993
-
- PS: is there any other project like these TNCs around ? please let me know,
- would be very interesting. (and how is it with any DSP modem ?)
-
-
-
- --
- Jan Schiefer, g0trr, jas@hplb.hpl.hp.com, HP Labs Bristol, UK. +44 272 228344
- Finally, I discovered a way to create lines longer then 80 columns, even on term
-
- ------------------------------
-
- End of TCP-Group Digest V94 #48
- ******************************
-