Distributed Link Service Allows Link Type To Be Changed This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
This article was previously published under Q171114 SYMPTOMS
The configured Link Type for a Distributed Link Service can be changed
after the link service is installed, even though this should not be
possible.
The Distributed Link Service configuration is not preventing the link type for a distributed link service from being changed after it was installed. The link type should not be configurable after the link service is installed, because the connection properties are different for the various connection types. For example, the connection parameters for an 802.2 DLC connection are different than the parameters for a Leased Line SDLC connection. STATUS
Microsoft has confirmed this to be a problem in SNA Server version 3.0 and
3.0 Service Pack 1 (SP1). This problem was corrected in the latest SNA
Server version 3.0 U.S. Service Pack. For information on obtaining this
Service Pack, query on the following word in the Microsoft Knowledge Base
(without the spaces):
S E R V P A C K
When the fix is applied, the Distributed Link Service configuration is
updated to prevent the link type from being changed after a Distributed
Link Service is installed with one exception. The exception is for Ethernet
802.2 and TokenRing 802.2 link types. Either one of these link types can be
changed to the other, because the 802.2 DLC connection parameters are the
same for either Ethernet or Token Ring connections.
MORE INFORMATION
When you are using the Distributed Link Service (DLS) feature of SNA
Server, the Link Type parameter in the Distributed Link Service properties
on a remote SNA Server computer is used to specify the type of link being
distributed by the central SNA Server computer. For example, if the central
SNA Server computer is distributing an 802.2 DLC Link Service over an
Ethernet adapter, the Link Type on the Distributed Link Service would need
to be Ethernet 802.2 on the remote SNA Server computer.
NOTE: A Distributed Link Service will show up in SNA Server Manager as SnaRem1, SnaRem2, and so on. Under SNA Server 3.0 and 3.0 SP1, the Distributed Link Service Properties dialog box lists the following Link Types:
Channel Attach
All of these options remain available after the link service is installed.
DFT Ethernet 802.2 Leased SDLC Switched SDLC TokenRing 802.2 Twinax X.25/QLLC.
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