Re: [Linux-decnet-user] LATD: problem with DECServer 90L+

[Patrick C. <pa...@ty...>]

On Mon, Sep 09, 2002 at 11:04:17AM +0200, hic...@se... wrote:
> 
> Hi guys,
> 
> I've googled the web but didn't find anything suitable .. maybe you could
> help.
> 
> We have several terminals, connected to terminal server, which speaks LAT
> only (no telnet). It connected the terms to a VAX machine. Now the VAX
> will be shutdown and removed, but they want to keep terminals for
> students access to e-mail.
> 
> I put latd 1.15 from debian unstable package on my linux woody server
> named Phobos. Things seem to start good, when I 'c phobos' from a vt420
> connected to 90L+, the terminal server discovers via dec broadcast the MAC
> address of the server and starts talking to it.
> 
> I've captured the communication, 08-00-etc is the term server, 00-50-etc
> is the linux box:
> 
> 1. 08-00-2b-31-0d-e4 -> 00-50-da-44-0c-70
>    C, Start, 0x7304->0x00
> 
> 2. 00-50-da-44-0c-70 -> 08-00-2b-31-0d-e4
>    R, Start, 0x35->0x7304
> 3. the same as 2
> 4. the same as 2
> 
> .. after the first query from term server, there are 21 equivalent
> responses sent from linux box. These are ignored by term server, no
> more messages addressed from 0x7304 to 0x35 appear.
> 
> Then term server asks the C, Start again, and linux box responds with the
> same packets as before, only the number is one higher (0x36).
> 
> When the linux box timeouts on the circuit, it sends 21 C, Stop messages
> from 0x35. The same happens several times around, the amount of messages
> the linux box sends is always different.
> 
> When they reach 0x3d, the term server gives up and terminal shows "Service
> Unavailable" error. Then term server sends C, Stop, 0x00->0x00 .. and
> linux box sends more than hundred C, Stop, 0x3D->0x7304 LAT packets.
> 

Can you send me the full tcpdump please. I have a DS90L+ here and it works fine.


patrick