Cisco Systems network hardware 3.6 Manual

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Cisco Systems network hardware 3.6
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Cisco Active Network Abstraction Fault Management User Guide, Version 3.6 Service Pack 1
OL-14284-01
Chapter 1 Fault Management Overview
Basic Concepts and Terms
Figure 1-1 Event Flood
Meeting the event management challenge is done by correlating related events into a sequence that
represents the alarm lifecycle, and using the network dependency model to determine the causal
inter-relationship between alarms.
Cisco ANA can be used for analyzing and managing faults using fault detection, isolation and
correlation. Once a fault is identified, the system uses the auto-discovered virtual network model to
perform fault inspection and correlation in order to determine the root cause of the fault and, if
applicable, to perform service impact analysis.
Basic Concepts and Terms
Alarm
An alarm represents a scenario which involves a fault occurring in the network or management system.
Alarms represent the complete fault lifecycle, from the time that the alarm is opened (when the fault is
first detected) until it is closed and acknowledged. Examples of alarms include:
• Link down
• Device unreachable
Lost
Connectivity
! !
!
!
!
!
!
!
!
!
!
!
!
!
Trap: DLSw
Peer Down
Unmanaged
Network
Syslog: Lost
BGP Neighbor
Syslog
OSPF neighbor
Syslog: LSP
Reroute
: Lost
Trap: Link
Down
!
Syslog: Lost
Neighbor
Syslog: Lost
BGP Neighbor
!
Syslog: Lost
OSPF neighbor
Trap: DLSw
Peer Down
Lost
Connectivity
Trap: Link
Down
Syslog: Lost
BGP Neighbor
Syslog: LSP
Reroute
Syslog: Lost
OSPF neighbor
Ping: Device
Unreachable
Syslog: FR
DLCI Down
!
Syslog: HSRP
Standby -> Active
!
Ping: Device
Unreachable
IP Backbone
154391
Table of Contents
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