SS7 CAF Process Down
Call Session Control Function

Contents


1   Alarm Description

This is an alarm of severity MAJOR.

The alarm is raised when an attempt to start a process has failed.

Table 1    SS7 CAF Process Down Alarm Causes

Alarm Cause

Description

Fault Reason

Fault Location

Impact

  • A process is crashed or terminated.

  • ECM was unable to connect to the process after it was started.

  • A controlled takedown of the process was made.

  • Internal cluster network problems.

An attempt to start a process failed.

  • A process has crashed, is terminated, or unavailable.

  • Internal cluster network problems.

Internal cluster network.

Normally this is a non-fatal alarm; the ECM tries to start the process again.


If the alarm is raised more than 5 times within 5 minutes or is persistent for 5 minutes, follow the procedure in Section 2.

Table 2    SS7 CAF Process Down Alarm Attributes

Attribute Name

Attribute Value

Major Type

193

Minor Type

1586561537

Managed Object Class

N/A

Source

SystemComponents.Name=$System Components,Ecm.Name=<*>,Host.Address=<*>,ClassID=<*>,InstanceType=<*>,Process.InstanceID=<*>


or


ProcClass=<*>,Instance=<*>

Specific Problem

Process Down

Perceived Severity

SEVERITY_MAJOR

2   Procedure

2.1   Handle Alarm SS7 CAF Process Down

Prerequisites

Steps

  1. Check if the alarm is hanging using dsc-show-alarms:

    dsc-show-alarms | grep -i ss7

    1926 | MAJOR    | 2016-11-25 09:24:51 | SS7 CAF Process Down
         | SystemComponents.Name=$System Components,\⇒
    Ecm.Name=$ECM,Host.Address=PL-3,ClassID=39,\⇒
    InstanceType=10,Process.InstanceID=1
    

  2. Check if the process is down:

    root@SC-1:~# dsc-connect-signalling-mgr

    cli> connect;

    EXECUTED

    cli> procp;

    Process                     State
    SCTP_CONTROL FEP:0 [PL-3]   Running
    SCTP_SERVER FEP:1 [PL-3]    Running
    SCTP_SERVER FEP:2 [PL-4]    Running
    SCTP_SERVER FEP:3 [PL-5]    Running
    SCTP_SERVER FEP:4 [PL-6]    Running
    SCTP_SERVER FEP:5 [PL-7]    Running
    SCTP_SERVER FEP:6 [PL-8]    Running
    SCTP_SERVER FEP:7 [PL-9]    Running
    

  3. If the alarm is shown in dsc-show-alarms and the process is running in the ss7caf signalling-mgr, remove the alarm:

    dsc-clear-alarm –a 1926

  4. Collect the ecm.log and ss7trace.log located in /opt/sign/log.

    Also collect the current configuration which is located in the folder /opt/sign/etc. Collect the file active.om.cim and all the files with the extension *.cnf.

  5. Contact next level of support and provide the files collected in Step 4.