Sample Problems - Alcatel 5620 Troubleshooting Manual

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3.4

Sample problems

Figure 3-5 shows a two-node sample network configured with a VPLS that was used
to create problems and generate alarms. This configuration generates the maximum
number of alarms per problem type because alternate network paths are not available
for self-healing.
1/1/4
The dynamic alarm list is used to troubleshoot the following types of problems that
are created.
•
physical port problem that causes an Equipment Down alarm
•
underlying port state problem that causes a number of related alarms at the LSP
level
•
configuration problem that causes a Frame Size Problem alarm
Alcatel 5620 Service Aware Manager, Release 2.1 R2
May 2005 95-5887-01-00-B
Through this process, you should find the lowest level managed object related to the
object in the alarm.
Choose this object in the Related Objects list and click on the View Object button.
The object information form opens.
Note — When you click on the Faults tab button, it should confirm that
there are no alarms on this object. Alarms are listed in the dynamic alarm
list.
Check the States information. This information should point to the root cause of the
alarm. The problem should be found on the related, supporting object below the
lowest level object in the alarm.
If necessary, check the Administrative State of the supporting port objects. A port
with Administrative State Down does not generate alarms on the port, card, shelf,
LAG, protocols, or sessions, but generates network path and service alarms. If the
Administrative State is Down, change it to Up.
After the problem is fixed, the correlated alarms should automatically clear.
LAG 1/1/2, 1/1/3
10.10.11.1/24
Customer
access
7750 SR
ports
site ID
10.1.200.52/32
BGP, OSPF, and MPLS are on each network interface.
3 — Troubleshooting network alarms
Figure 3-5 Sample network
LAG 1/1/2, 1/1/3
10.10.11.2/24
1/1/4
Customer
access
7750 SR
ports
site ID
10.1.200.53/32
17558
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