User manual

8-4
Cisco Active Network Abstraction 3.6.6 MPLS User Guide
OL-19192-01
Chapter 8 Impact Analysis in MPLS Networks
Supported Fault Scenarios
Link Down Scenario
Table 8-1 shows the impact calculations and reported affected severities for a link down fault scenario.
Link Overutilized/Data Loss Scenario
Table 8-2 shows the impacted calculations and reported affected severities for a link overutilized/data
loss fault scenario.
Table 8-1 Link Down Scenario
Impact and Affected Severity Description
Impact calculation Initiates an affected flow to determine the affected parties using the
LSPs traversing the link.
Reported affected severity
• The Link Down alarm creates a series of affected severity updates
over time. These updates are added to the previous updates in the
system database. In this case, the system provides the following
reports:
– The first link down report shows “X<->Y” as Potentially
Affected.
– Over time, the VNE identifies that this service is Real
Affected or Recovered and generates an updated report (this
applies only to cross-MPLS networks).
– The Affected Parties tab of the Ticket Properties dialog box
displays the latest severity, for example, Real Affected.
– The Affected Parties Destination Properties dialog box
displays both reported severities.
This functionality is currently supported for Link Down only.
Table 8-2 Link Overutilized/Data Loss Scenario
Impact and Affected Severity Description
Impact calculation Initiates an affected flow to determine the affected parties using the
LSPs traversing the link.
Reported affected severity Only reports on potentially affected.