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ManageEngine NetFlow Analyzer – Professional Edition
11. Why NFA says router time not is SYNC and stops collecting data ?
Please follow these steps to fix this issue:
1. In case you see this, please ensure the following on the router:Check if the correct time is
set on your router.
You can check this by logging into the router and typing show clock. You can set the
clock time using the command clock set hh:mm:ss month date year. Check if the time
zone and the offset (in Hours and Minutes) for the time zone is set properly (E.g. PST -8
00 for PST or EST -5 00 for EST). You can check this by logging into the router, going
into the configure terminal and typing show running-config. You can set the clock time
zone and offset using the command clock timezone zone hours [minutes] (E.g. clock
timezone PST -8 00)
2. The time sync issue may be related to high CPU load and reducing the IP group can
help. Each address / range / network will be checked seperately. So, 4 addresses of
10.10.10.1, 10.10.10.2, 10.10.10.3 and 10.10.10.4 will add more overload than creating
the same as a single IP range of 10.10.10.1 to 10.10.10.4. While associating interfaces
you are better off selecting "All interfaces" wherever appropriate since in that case no
check will be done with the interface in the flow. In your case, since you had 180
interfaces associated, the code had to check for these 180 interfaces in each flow
received.
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