19400 - Transport Down

Alarm Group: TMF

Description: Transport Down

Severity: Major

Instance: <TransportName>

HA Score: Normal

Auto Clear Seconds: 0 (zero)

OID: awptransmgrTransportDownNotify

Recovery:

  1. The Active alarm instance data, which can be viewed from Main Menu > Alarms & Events > View Active, contains the Transport Name as configured in Main Menu > Transport Manager > Configuration > Transport

    Additional Information for the alarm can be found in Main Menu > Alarms & Events > View Active or View History by locating the row with a sequence number that matches the active alarm sequence number and viewing the Additional Info column. This column will include the local and remote IP addresses and ports, the administrative state, and the protocol state of the association.

    This alarm is raised when:
    • The association is configured and the admin state is enabled, but the SCTP transport is not in the ASP-UP protocol state for the M3UA plugin, or
    • The association is configured, but the SCTP transport is not in the APP-UP state for other plugins
    Note: It is normal to have an association alarm if the association is in the Blocked or Disabled administrative state.
    This alarm is cleared when:
    • The association received an ASP-UP-ACK from the far-end and the SCTP transport in the ASP-UP state for the M3UA plugin, or
    • The SCTP transport is an APP-UP state for other plugins, or
    • The association is disabled/deleted

    If an association's protocol state does not match the association's administrative state, the system will automatically attempt to recover the association if configured as Initiator and enabled. Connection attempts occur every "Connection Retry Interval" seconds, as defined in the Transport Configuration Set screen for the configuration set used by the failed association (default: 10 seconds).

    Association administrative states are set from Main Menu > Transport Manager > Maintenance > 'Transport' by clicking on the desired action for the row containing the association. This screen is also used to monitor association status.

    To troubleshoot:
    • If the association is manually Blocked or Disabled, then no further action is necessary.
    • Verify that the association's local IP address and port number are configured on the IP signaling gateway (Some signaling gateways will only accept connections from IP addresses and ports that they are configured to accept from).
    • Verify that the association's remote IP address and port correctly identify an SCTP listening port on the adjacent server.
    • Verify that IP network connectivity exists between the MP server and the adjacent server.
    • Check the event history logs at Main Menu > Alarms & Events > View History for additional SS7 events or alarms from this MP server.
    • Verify that the adjacent server on the signaling gateway is not under maintenance.

  2. If the alarm persists, contact My Oracle Support (MOS).
Parent topic: Transport Manager Alarms and Events (19400-19499)