SS7 CAF SCTP IP Path is Down
Call Session Control Function

Contents


1   Alarm Description

This is an alarm of severity WARNING.

The alarm is issued when an SCTP path is unavailable.

Table 1    SCTP IP Path is Down Alarm Causes

Alarm Cause

Description

Fault Reason

Fault Location

Impact

  • An SCTP IP path became inactive, unavailable, or unreachable.

  • Network disturbances.

SCTP IP path became unavailable.

  • Path is inactive, unavailable, or unreachable.

  • Network problems.

Network

Normally this is a non-fatal alarm; SCTP uses other paths in the association for communicating with the remote peer.


Follow the procedure in Section 2 Procedure if the alarm is raised for more than an hour without any known network disturbances.

 
Table 2    SCTP IP Path is Down Alarm Attributes

Attribute Name

Attribute Value

Major Type

193

Minor Type

1586601228

Managed Object Class

Not Applicable

Source

RemoteAddress=<*>,LocalAddress=<*>,FEID_Association=<*>,AssociationID=<*>,Sctp.InstanceID=<*>

Specific Problem

SCTP IP Path is Down

Perceived Severity

SEVERITY_WARNING

2   Procedure

2.1   Handle Alarm SCTP IP Path is Down

Prerequisites

Steps

  1. Make sure that there are no disturbances in the network.
  2. Enable trace on SCTP:
    Note:  
    SCTP tracing is not recommended during hours of high traffic.

    1. Log on to the controller node.
    2. Start the Signalling Manager CLI:

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

      cli> connect;

      EXECUTED

    3. Enable SCTP trace:

      cli> STTON;

      SCTP-Trace On Successful.
      EXECUTED

    4. Keep the trace activated for 5 minutes.
    5. Disable SCTP trace:

      cli> STTOF;

      SCTP-Trace Off Successful.
      EXECUTED

  3. Collect the ss7trace.log located in /opt/sign/log.

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

  4. Contact the next level of support and provide the files collected in Step 3.