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- Message-ID: <9301272030.AA13997@noc2.dccs.upenn.edu>
- Newsgroups: bit.listserv.aix-l
- Date: Wed, 27 Jan 1993 15:28:58 EST
- Sender: IBM AIX Discussion List <AIX-L@PUCC.BITNET>
- From: "Thomas D. Denier" <TOM@PENNDRLS.UPENN.EDU>
- Subject: Re: Problem with AIX 3.2 telnet
- Lines: 48
-
- Laborious analysis of bit patterns indicates that the problem with the
- Cisco reverse terminal server is a speed mis-match between the IBM
- 7171 and the reverse terminal server, as Dan Cromer suggested. I am
- still trying to find out why this happens with telnet sessions from
- our RS/6000 but not with telnet sessions from Sun and Next systems.
-
- The problem with SimTCP/IP on our MVS system clearly has a completely
- different origin. Simware finally got around to telling us that the
- current distribution version of SimTCP/IP is compatable with MVS
- TCP/IP 2.1 but not with TCP/IP 2.2.1. They are surprised that the
- code works even part of the time. When we get a copy of SimTCP/IP
- that is compatable with TCP/IP 2.2.1 I will see if the problem still
- occurs.
-
- I ran a trace during a session between the RS/6000 and the Cisco
- reverse terminal server. The telnet option negotiation went as follows:
-
- RS/6000 to Cisco server:
- DO Echo
- DO Suppress-GA
- WILL Terminal-Type
- DO Option X'C8'
- WILL Option X'1F'
- Cisco server to RS/6000:
- WILL Echo
- WILL Suppress-GA
- WILL Transmit Binary
- DO Transmit Binary
- RS/6000 to Cisco server:
- DO Transmit Binary
- WILL Transmit Binary
- Cisco server to RS/6000:
- DON'T Terminal-Type
- WON'T Option X'C8'
- DON'T Option X'1F'
- RS/6000 to Cisco server:
- WON'T Terminal-Type
- DON'T Option X'C8'
- WON'T Option X'1F'
-
- Am I correct in understanding that the last group of three requests
- from the RS/6000 is contrary to RFC 854 (the telnet protocol
- specification)? One of the possible causes for the difference in
- behavior between the RS/6000 and our other workstations is the time
- consumed by this transmission and subsequent error recovery by the
- Cisco server.
-
- Does anyone know what options X'C8' and X'1F' are?
-