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Troubleshooting the DSCP Service on Sun SPARC(R) Enterprise M3000/M4000/M5000/M8000/M9000 Servers (Doc ID 1009921.1)

Last updated on MARCH 02, 2022

Applies to:

Sun SPARC Enterprise M8000 Server - Version Not Applicable to Not Applicable [Release N/A]
Sun SPARC Enterprise M9000-32 Server - Version Not Applicable and later
Sun SPARC Enterprise M3000 Server - Version Not Applicable and later
Sun SPARC Enterprise M9000-64 Server - Version Not Applicable and later
Sun SPARC Enterprise M4000 Server - Version Not Applicable to Not Applicable [Release N/A]
All Platforms

Purpose

This resolution path addresses problems where the OPL Mx000 DSCP service is not started, which prevents data from flowing between the XSCF and domain.

Symptoms

This issue can manifest itself in several different ways listed below:

XSCF> showdevices -d 01
Can't get device information from DomainID 1.  <=====

XSCF> deleteboard -c unassign 09-0
Start unconfiguring XSB from domain.
XSB#09-0 will be unassigned from domain immediately. Continue [y|n] :y
DR failed. Domain (DomainID 1) cannot communicate via DSCP path.         <======

snapshot file @scf@cli@usr@bin@showdevices_-v_-d_?.err will contain:
SNAPSHOT MSG: Command Timeout: Exit Signal: 15

DSCP is used by FMA to transfer data between fmd on the domain and the XSCFU.  The FMA logs and /var/adm/messages on the domain will log failures if DSCP is not properly configured.  The fmd logs will consume large amounts of space recording errors of ereport.fm.fmd.module and no fma messages are propagated to the xscfu.

In the "SPARC Enterprise Mx000 Servers XSCF User’s Guide • January 2012" , TABLE 3-3 "DSCP Link Port Numbers and Connection Directions for Functions" on page 3-6 , we can see what connections are allowed over the DSCP network:

Port Number /
Protocol        Function               Connection Direction
12/TCP          FMA event translation  XSCF -> Domain
22/TCP          SSH                    Domain -> XSCF
24/TCP          FMA event translation  XSCF -> Domain
665/TCP         DR control             XSCF -> Domain
123/UDP         Time synchronization   Domain -> XSCF

All other connections over the DSCP network will fail by design.

Troubleshooting Steps

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