Number | 7121 |
Severity | Minor |
SNMP Name | ptLSLinkSs7L2LinkUnaligned |
Description | This event indicates that a signaling link is not aligned either because the link has not successfully completed proving, or the link has failed. |
Application | MTP3 |
Action | See the following Recommended Action |
Recommended Action
If the link does not align, the operator has to intervene in order to successfully align the link. If a link is not coming up at L2, follow these steps.
- Log in to the Web UI as root.
- Check the port the link is using and ensure that the port has SYNC.
- Click Hardware.
- Click on the I/O card in the Hardware graphic.
- Check the status of the port being used for the affected link.
- Locate the Alarm.
- Click on the minor alarm count in the Alarm Dashboard.
- Click on this alarm number.
- Click on the date of the occurrence.
- Click Associated UI Object.
- Change the L2 Debug to 2.
Use SSH to access the system as root.
When a link aligns the logs show the following activity:
- Send SIO
- Receive SIO
- Send SIN or SIE
- Receive SIN or SIE
- L2 in service
- On the command line enter tail -f /var/log/ptidbglog.
- Any receipt of SIOS means that the other side is stopping link alignment or taking the link down - need to contact remote end to see why.
- Any sending of SIOS means that we are stopping link alignment or taking link down usually for timer expiry because we are not receiving expected message.
- Too long without signal - this means that we are not receiving anything from the other side.
- Too long to receive SIO - we are not receiving SIO and link alignment cannot continue.