VPN
Baselining and Health Monitoring
VPN Explorer passively monitors and records the
MP-BGP routing protocol exchanges in the Service
Provider's network to compute real-time and historical
routed topologies for each VPN customer, while
automatically generating baselines of each customer’s
VPN across multiple data attributes, including:
- PE routers participating in each customer's
VPN (or in each Route Target)
- Prefixes (network addresses) advertised by
each customer VPN site (or by each Route Target)
Using these baselines, VPN Explorer can provide
network-wide and per-customer monitoring, reporting
and alerting on deviations from baseline. Instead
of having to manually “hunt and peck” for this
information by logging into multiple routers,
VPN Explorer provides at a glance visualizations
of the Layer 3 status of each customer’s VPN.
A top level VPN Explorer view provides the network
administrator with a summary view of overall VPN
service health, individual customer VPN site reachability
and PE participation, status indicators of deviation
from customer baselines, and potential VPN “hot
spots” with a list of customers who have the highest
percentage deviation from their baseline. A convenient
explorer-style menu allows easy access to key
reports and capabilities.

A topology map that can be viewed in real-time
or historical mode shows the state of the network
as of the specified time. By selecting an individual
customer’s VPN, the topology map will indicate
the PE routers that were participating in the
customer’s VPN at the selected time. Further details
can be shown, including the list of prefixes advertised
per site and a complete list of all routing events
pertaining to the customer’s VPN. Powerful event
analysis and filtering tools let the network engineer
rapidly analyze and diagnose any potential problems.

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