Bgp Event Correlation; 5620 Sam Fault Correlation Engine; Bgp Prefix Fault Correlation; Bgp Troubleshooting - Alcatel-Lucent 5620 User Manual

Release 12.0 R7 | December 2014 | 3HE 08833 AAAD TQZZA Edition 01
11 — Services assurance and troubleshooting

BGP event correlation

The 5620 SAM correlates DC events for impact and root cause analysis.For the
purposes of event correlation, the IGP: Upstream Connection Up and Down events
are similar to the VSwitch Controller Up and Down events. The IGP monitor is used
to discover and log the upstream router events. An IGP: Upstream Redundancy
Change event is logged when a second path to a reachable upstream router is
discovered.
11.5

5620 SAM fault correlation engine

The 5620 SAM supports a fault management framework unique to data centers
support. In addition to the fault management rules provided as part of the
5650 CPAM, the 5620 SAM supports a new set of correlation rules which help to
monitor and troubleshoot virtual network and service objects. The 5620 SAM
correlation framework is extended to persisted virtual network and service objects to
allow you to view impact analysis for moved or deleted VMs, for example. This new
framework allows for more flexible correlation rules and allows correlation between
specific alarms. Alarms are still modeled in the 5620 SAM, but are correlated with
the engine.
The 5620 SAM fault management framework includes rules for correlating data
center alarms across the following:
•
service status from virtualized service sites to virtual network components
(V-Switch, V-Port, and VM, for example)
•
threshold crossing alarms from virtualized service sites to the V-Port
•
BGP prefix reachability alarms from IGP monitor to virtual network components
•
BGP prefix reachability alarms from virtual network components to virtualized
service sites

BGP prefix fault correlation

In addition to the existing 5650 CPAM correlation framework, the
5620 SAMsupports framework for correlating data center-specific alarms based on
DC network events in the event log.
The 5620 SAM supports correlation for absent V-Port or BGP Prefix events. In cases
where a V-Port or BGP Prefix event is expected, but not present, the 5620 SAM
raises an alarm.
11.6

BGP troubleshooting

The 5650 CPAM includes BGP functionality for monitoring and troubleshooting a
data center network. The 5650 CPAM discovers and monitors BGP routing
information by consolidating the data from the 7701 CPAAs and providing an
overview of a carrier network. You can use the information to, for example, monitor
whether the change in the number of BGP routes may compromise the stability of the
network, or if key BGP routes are disappearing. For VPRN routes, a high rate of
change for a set of VRFs is flagged by the 5650 CPAM.
11-4 Alcatel-Lucent 5620 Service Aware Manager
Nuage Virtualization User Guide
5620 SAM