user manual
Table Of Contents
- Cisco Active Network Abstraction Fault Management User Guide Version 3.6 Service Pack 1
- Contents
- About This Guide
- Fault Management Overview
- Fault Detection and Isolation
- CiscoANA Event Correlation and Suppression
- Advanced Correlation Scenarios
- Device Unreachable Alarm
- IP Interface Failure Scenarios
- Multi Route Correlation
- Generic Routing Encapsulation (GRE) Tunnel Down/Up
- BGP Process Down Alarm
- MPLS Interface Removed Alarm
- LDP Neighbor Down Alarm
- Correlation Over Unmanaged Segments
- Event and Alarm Configuration Parameters
- Impact Analysis
- Supported Service Alarms
- Event and Alarm Correlation Flow
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Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1
OL-14284-01
Chapter 4 Advanced Correlation Scenarios
Generic Routing Encapsulation (GRE) Tunnel Down/Up
GRE Tunnel Down Correlation Example 2
This example provides a real world scenario, whereby multiple GRE tunnels cross through a physical
link. When this link is shut down by an administrator, many alarms are generated. All the alarms are
correlated to the root cause ticket "Link down due to admin down”, as illustrated in Figure 4-15.
Figure 4-15 GRE Tunnel Down Example 2 (Multiple GRE Tunnels)