Date: Tue, 22 Feb 94 04:30:05 PST From: Advanced Amateur Radio Networking Group 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: . Subscription requests to . 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 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 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 ******************************