Article ID: 131625
Article Last Modified on 12/8/2003
APPLIES TO
- Microsoft SNA Server 2.0, when used with:
- Microsoft SNA Server 2.1, when used with:
- Microsoft SNA Server 3.0, when used with:
- Microsoft SNA Server 2.11 Service Pack 1, when used with:
This article was previously published under Q131625
SUMMARY
While SNA Server does support one or more connections to the same host
system (see
107192), the AS/400 does not support more than one concurrent
APPN-capable connection from a single SNA Server 2.x system (acting as a
LEN node), over any link type (802.2 Token Ring, Ethernet, SDLC, or X.25).
SNA Server 3.0 does support multiple APPN-capable connections to the same
AS/400.
For additional information on how SNA Server 3.0 supports multiple
APPN-capable connections to an AS/400, please see the following article
in the Microsoft Knowledge Base:
162133 SNA Server 3.0 Supports Multiple Connections To Same AS/400
For additional information on how to define a non-APPN capable connection,
please see the following article in the Microsoft Knowledge Base:
145714 How to Establish Two 802.2 Connections To AS/400
To increase the number of sessions from SNA Server to an AS/400, multiple
local APPC LUs can be defined and partnered with the AS/400s remote APPC
LU, or the QPCSUPP mode's session limit can be increased in both SNA Server
and the AS/400.
For additional information, please see the following article in the
Microsoft Knowledge Base:
126395 Ways to Increase the Number of AS/400 LU6.2 Sessions
MORE INFORMATION
For SNA Server to connect to an AS/400, an APPC controller definition must
exist for SNA Server's local control point name. The APPC controller may be
autocreated by the AS/400 or manually created by the AS/400 administrator.
The AS/400 allows only a single APPC controller, with a given control point
name, over any line it supports. If two connections are defined in SNA
Server to the same AS/400 (for example, two 802.2 connections, or one 802.2
and one SDLC, etc.), the AS/400 rejects the second connection request
unless the first APPC controller definition is deleted.
SNA Server 2.x can only be configured with one local control point name
(configured in SNA Admin from the Session Properties dialog box).
For 802.2 connections, the AS/400 allows only a single APPC controller to
have a specific network adapter address. So, if an SNA Server connects to
an AS/400 with one local control point name configured (over an 802.2
connection), and the local control point name is later changed, the AS/400
will refuse the connection attempt with the new name because an APPC
controller definition already exists with the same network adapter address.
Additional query words: prodsna
Keywords: kbinfo kbnetwork kbfile KB131625