New Internet-Draft, PDN Routing WG: XARP

["Monica L. Hart" <mhart at NRI.Reston.VA.US>]

A new Internet-Draft is now available from the online library of
NNSC.NSF.NET.

	Title:        X.121 Address Resolution for IP Datagram
		      Transmission Over X.25 Networks
	Editor:       Carl-H. Rokitansky/Fern University of Hagen
		      for the PDN Routing Working Group
	Filename:     draft-ietf-pdn-xarp-00.txt


X.121 Address Resolution is important for the routing of Internet
datagrams through the worldwide system of X.25 Public Data Networks.
An X.121 Address Resolution Protocol (XARP) with several options
is presented in this document. Depending whether the mapping
between the Internet (PDN-cluster) address of a PDN-host or VAN-gateway
and its corresponding X.121 address on the X.25 network can be solved
locally, or by another PDN-host or VAN-gateway, or even by a remote
X.121 address server, not directly connected to the X.25 network, the
appropriate option can be chosen. The X.121 address resolution is
performed either by a local table-lookup, or by using the user data field
in X.25 call request/accept/reject packets (FXARP), or by transmitting
XARP-Request/Reply packets as data in subsequent info packets after
an X.25 connection has been established (XARP), or by using IP/UDP to
exchange XARP Request/Reply packets with a remote X.121 address server,
not directly connected to the X.25 network.

This draft can be obtained via FTP from NNSC.NSF.NET with the FILENAME
above.  Login with FTP, username anonymous and password guest.  Once
connected cd "internet-drafts".

If you encounter any problems please let me know.

Monica Hart/NRI