Host Integration Server 2004: FIX: The Netview log on an IBM mainframe logs RTP path switches every 60 seconds when the IP-DLC link service is configured to use VRN in a Host Integration Server 2004 environment

SUPPORT SOLUTION:
In a
Microsoft Host Integration Server 2004 environment,
you enable
the Virtual Routing Node (VRN) functionality
for the IP-DLC link service. In this case, the Rapid

Transport Protocol (RTP) pipe
that carries the Dependent
Logical Unit Server - Dependent Logical Unit Requestor (DLUS-DLUR)
pipes
is dropped every 60 seconds.
Then, the IP-DLC link service reestablishes the RTP pipe over a new path. Additionally, path-switch messages are logged in the Netview log on the IBM mainframe every 60 seconds. This
issue occurs when the RTP pipe is carried over a
single-hop VRN link..This problem occurs because the VRN link
is treated as a
limited resource.
Additionally,
the single-hop route is optimized to not send keep-alive messages.
Therefore, Host
Integration
Server
2004 closes the VRN link
on a 60 second timer. Host
Integration
Server
2004 then
reestablishes
the VRN link
and path switches to the new link without
losing data..Hotfix information
2, ‘resolution’);
A supported
hotfix is available from Microsoft. However, this hotfix is intended to correct
only the problem that is described in this article. Apply this hotfix only to
systems that are experiencing the problem described in this article. This
hotfix might receive additional testing. Therefore, if you are not severely
affected by this problem, we recommend that you wait for the next software
update that contains this hotfix. If the hotfix is available for
download, there is a “Hotfix download available” section at the top of this
Knowledge Base article. If this section does not appear, contact Microsoft
Customer Service and Support to obtain the hotfix. Note If additional issues occur or if any troubleshooting is required,
you might have to create a separate service request. The usual support costs
will apply to additional support questions and issues that do not qualify for
this specific hotfix. For a complete list of Microsoft Customer Service and
Support telephone numbers or to create a separate service request, visit the
following Microsoft Web site: http://support.microsoft.com/contactus/?ws=support
(http://support.microsoft.com/contactus/?ws=support)
Note The “Hotfix download available” form displays the languages for
which the hotfix is available. If you do not see your language, it is because a
hotfix is not available for that language.
Prerequisites
3, ‘resolution’);
You must have Host Integration Server 2004 installed to apply
this hotfix. Restart requirement
3, ‘resolution’);
You do not have to restart the computer after you apply this
hotfix. Hotfix replacement information
3, ‘resolution’);
This hotfix does not replace other hotfixes. File information
3, ‘resolution’);
The English version of this hotfix has the file
attributes (or later file attributes) that are listed in the following table.
The dates and times for these files are listed in Coordinated Universal Time
(UTC). When you view the file information, it is converted to local time. To
find the difference between UTC and local time, use the Time
Zone tab in the Date and Time item in Control Panel.
Collapse this tableExpand this tableFile nameFile versionFile
sizeDateTimePlatformSP requirementMmcsna.dll6.0.2443.0258,36811-Sep-200921:28×86SP2Mngsna.dll6.0.2443.0101,71211-Sep-200921:28×86SP2Snaole.dll6.0.2443.0635,21611-Sep-200921:28×86SP2.Microsoft
has confirmed that this is a problem in the Microsoft products that are listed
in the “Applies to” section..For more information about how to use NetView to manage an
SNA environment, visit the following Microsoft Developer Network (MSDN) Web
site: http://msdn.microsoft.com/en-us/library/ee276599(BTS.10).aspx
(http://msdn.microsoft.com/en-us/library/ee276599(BTS.10).aspx)
For more information about
how to add Virtual Routing Node (VRN) support to the IP-DLC link service in
Microsoft Host Integration Server 2004, click the following article number to
view the article in the Microsoft Knowledge Base: 924770 

(http://support.microsoft.com/kb/924770/
)

An
update is available that adds Virtual Routing Node support to the IP-DLC link
service in Host Integration Server 2004

.

For File Repair and Data Recovery, visit File Repair / Data Recovery