Prerequisites
OpManager primarily relies on Cisco's IP-SLA
for monitoring the WAN and the prerequisite therefore is that the
device should be a Cisco router and must have IPSLA agent enabled on
it. Almost all the routers from Cisco were enabled with IPSLA agent and
we support from IOS version 12.3 or later. OpManager uses SNMP to query
the Cisco routers for the links' performance data. IPSLA familiarity is
not
a prerequisite. You just need to tell OpManager which links you want to
monitor. OpManager provides an intuitive configuration wizard to help
you configure all the IPSLA parameters for monitoring the WAN health.
Steps to set up the WAN Monitor
Using
OpManager, you can now monitor the availability and latency of a WAN
link / path. A WAN link mentioned here is the path between the router
in your main office and the one in the branch office that you wish to
monitor.
Step 1
: Add ( / discover) the router in your LAN to OpManager. And make sure
the snmp read and write community are configured properly, for
that
router.
Step 2: Configuring the Router
to send traps
Configure
the cisco router to send traps to OpManager. Alerts are shown based on
the traps received in OpManager. To configure OpManager server as the
SNMP Server receiving traps for the routers, telnet the router and type
the following command:
snmp-server host <opmanager server
IP> traps <host community
string> rtr
For instance, if the OpManager host IP Address is 192.168.18.128, and
the community string is private, the command would be:
snmp-server host 192.168.18.128 traps private rtr
Step 3: Creating the WAN Monitor