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Document ID: MCGN-44ANDS

Servers - 9086001, Sharing IRQs may cause unpredictable results

Applicable to: World-Wide

Source: RETAIN tip H165698

Abstract: 9086001 - SHARING IRQS MAY CAUSE UNPREDICTABLE RESULTS

SYMPTOM:
When installing a Netfinity ESCON Adapter (p/n9086001), unpredictable results may occur if the adapter shares IRQs.

Possible problems could be as follows:

- Systems Network Architecture (SNA) addresses would not come online to the host unless Communication Server for NT (CS/NT) was up with those addresses configured in a link.

- With CS/NT up, the addresses would come online to the host, but a session could not be established to CS/NT. The host Physical Unit's (PU's) stayed in preqc status, and the CS/NT link did not activate. Eventually, CS/NT operations panel showed a big X mark through the ESCON Data Link Control (DLC). These are only examples of possible problems. Others may occur.

PROBLEM ISOLATION AIDS:
- The system is one of the following IBM Netfinity servers that supports the Netfinity ESCON Adapter:

a Netfinity 5000 server, Type 8659, any Model.
a Netfinity 5500 server, Type 8660, any Model.
a Netfinity 5500-M10 server, Type 8661, any Model.
a Netfinity 7000 server, Type 8651, any Model.
a Netfinity 7000-M10 server, Type 8680, any Model.

- The system is configured with a Netfinity ESCON Adapter p/n9086001.

NOTE - The current list of products that have been tested with current models of IBM Netfinity and PC Servers is available at the following URL:

http://www.pc.ibm.com/us/compat/

Click on "Host Attach/Mainframe Adapters".

FIX:
Insure that the Netfinity ESCON Adapter has its own dedicated IRQ. If 2 adapters are installed, make sure both have their own dedicated IRQ.

Verify Resources are not shared.

DETAILS:
The Netfinity ESCON Adapter will not share resources.

SAS KEYWORDS:
PSY2, D/T8680, NETFINITY, UNCLASSIFIED, ESCON, D/T8651, IRQ, CONFLICT, SHARE, 9086001, D/T8660, D/T8661, D/T8659

Search Keywords

PSY2, D/T8680, NETFINITY, UNCLASSIFIED, ESCON, D/T8651, IRQ, CONFLICT, SHARE, 9086001, D/T8660, D/T8661, D/T8659

Document Category

Retain

Date Created

19-01-99

Last Updated

22-01-99

Revision Date

Brand

IBM PC Server

Product Family

Netfinity 5000, Netfinity 5500, Netfinity 5500 M10, Netfinity 7000, Netfinity 7000 M10

Machine Type

8659, 8660, 8661, 8651, 8680

Model

TypeModel

Retain Tip (if applicable)

H165698

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Date last altered: A99/01/18