Path: utzoo!mnetor!uunet!husc6!tut.cis.ohio-state.edu!uwmcsd1!ig!agate!ucbvax!CCD.BBN.COM!dpowles
From: dpowles@CCD.BBN.COM ("Drew M. Powles")
Newsgroups: comp.protocols.tcp-ip
Subject: IP/DDN X.25 implementation survey
Message-ID: <8803091202.AA18602@ucbvax.Berkeley.EDU>
Date: 8 Mar 88 20:21:54 GMT
Sender: usenet@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 22

I am doing a survey on available TCP/IP implementations over DDN
Standard X.25 and would appreciate any and all information on the
following aspects (the vendor guide form the NIC doesn't go into
sufficient detail):

1) which implementations negotiate precedence for a DDN Standard X.25
call as defined on page 1-481 (volume 1) of the DDN Protocol Handbook
and the mapping of precedence from IP to DDN Standard X.25 as defined
on 1-494 of the same.  Additionally, what mechanisms are provided
allow a user or application process (i.e. FTP, Telnet, etc) to specify
the precedence of a session so that the precednce level is passed down
to the IP layer?

2) which implementations can utilitize DDN X.25 Logical addressing as
specified in pages 1-495 thru 1-498 of the DDN Protocol Handbook -
which includes mapping from IP addresses (either fully implemented or
partially implemented)?

many thanks for your help!

Drew Powles
BBN Communications