No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Analysis of Alarms Displayed on the NMS at the Reboot of the NE5000E After It Loads a Cold Patch

Publication Date:  2012-07-27 Views:  45 Downloads:  0
Issue Description
The NMS displays alarms about two POS interfaces of the NE5000E at the reboot of the NE5000E after it loads a cold patch. Other POS interfaces are normal. 
Alarm Information
The NMS displays the following red alarms:
Alarm 1
SRM/3/hwPortPhysicalDown: OID: 1.3.6.1.4.1.2011.5.25.129.2.5.1 EntityPhysicalIndex: [integer] BaseTrapSeverity: [integer] BaseTrapProbableCause: [integer] BaseTrapEventType: [integer] [octet]Physical Port turns to down!
Alarm 2
SRM/4/hwPortPhysicalUp: OID: 1.3.6.1.4.1.2011.5.25.129.2.5.2 EntityPhysicalIndex: [integer] BaseTrapSeverity: [integer] BaseTrapProbableCause: [integer] BaseTrapEventType: [integer] [octet]Physical Port recovered! 
 
Handling Process
The NMS displays alarms about the POS interfaces on which packets are encapsulated with HDLC at the reboot after a cold patch is loaded. This is normal. After the reboot, the alarms will disappear. 
Root Cause
The two POS interfaces use the HDLC protocol at the link layer. The two POS interfaces become Up at the reboot, but later become Down because they are not configured with IP addresses. The NMS detects the state change and displays alarms. Other POS interfaces use PPP at the link layer, but they do not become Up unless they are Up at both physical layer and link layer. At the link layer, the POS interfaces are Down because they are not configured with IP addresses. Therefore, the state of the POS interfaces does not change and no alarm is displayed. 
Suggestions
 You do not need to handle the alarms appearing at the reboot after a cold patch is loaded. 

END