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
CHAPTER
4-1
Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1
OL-14284-01
4
Advanced Correlation Scenarios
This chapter describes the specific alarms which use advanced correlation logic on top of the root cause
analysis flow:
• Device Unreachable Alarm—Describes the device unreachable alarm, its correlation and provides
various examples.
• IP Interface Failure Scenarios—Describes the ip interface status down alarm and its correlation. In
addition, it describes the all ip interfaces down alarm, its correlation and provides several examples.
• Multi Route Correlation—Describes support for multi route scenarios and their correlation. In
addition, it provides several examples.
• Generic Routing Encapsulation (GRE) Tunnel Down/Up—Provides an overview of GRE tunneling,
describes the GRE tunnel alarm, and provides correlation examples.
• BGP Process Down Alarm—Describes the BGP process down alarm, and its correlation.
• MPLS Interface Removed Alarm—Describes the MPLS interface removed alarm, and its
correlation.
• LDP Neighbor Down Alarm—Describes the LDP Neighbor Down alarm, and its correlation.
Device Unreachable Alarm
Connectivity Test
Connectivity tests are used to verify connectivity between the VNEs and managed network elements.
The connectivity is tested using each protocol the VNE uses to poll the device. The supported protocols
for connectivity tests are SNMP, Telnet and ICMP.
A device unreachable alarm will be issued if one or more of the connectivity test fails, that is, the device
does not respond on this protocol. The alarm will be cleared when all the protocol connectivity test are
passed successfully.
Note The ICMP connectivity test is enabled in Cisco ANA Manage.