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The WAN monitoring feature in
OpManager is an add-on feature and requires license to run. The
WAN monitor monitors the availability of all your WAN links, the Round
Trip Time (RT) / Latency and the traffic details. Alerts are triggered
when the set thresholds are violated, enabling the administrators to
attend to the fault in no time.
OpManager
uses Cisco's IPSLA agent to monitor the health and performance of the
WAN links, and the prerequisite therefore is, that the device must be a
Cisco router ( IOS version 12.3 or later) and it should have IPSLA
agent enabled on it . Almost all the routers from Cisco are enabled
with IPSLA agent and we support from IOS version 12.3 or later. The
performance of the WAN link is measured by sending simulated traffic
(packets of specified size) at a specified frequency. So the health of
the WAN link / path is monitored round the clock . It helps the IT
Engineer to proactively notice the problem. The Round Trip Time data is
collected and persisted to measure the performance and also for
reporting. Also, OpManager triggers alert when a Round Trip Time
threshold is violated.
OpManager collects IPSLA traps for events triggered due to a connection
loss or threshold violation for RT. When
any such failure occurs, OpManager immediately triggers a Trace Route
operation automatically to help the IT Engineer trace the fault to the
exact hop. Further, the Trace Route report shows RT data for five
different paths and 15 hops in a path. This enables you to troubleshoot
and get to the root of the problem much quicker, resulting in very less
downtime.
Besides this intelligent monitoring of the links across each hop,
Netflow traffic reports also integrated in this new release. This
enables
you to identify any latency caused by the LAN traffic. You simply need
to select all the WAN links / path to be monitored once and configure
it. A sample trace route graph is given below:
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