Hi all,
nagios is running here at my local server with ssh,mysql,smtp,http
monitoring.
And now I like to use *nagios* to monitor my 2 ADSL modems.
The environment is as below
1> my linux server has 3 lan crads eth0 ( connected with hub ) ,
eth1, eth2
2> There is an ADSL modem 220BX connected with eth1. ( 8MB
connection used as primary )
This modem is providing Internet connection from provider1 (say)
Another modem ADSL modem TAD100 connected with eth2. ( 512 KB
connection used as backup )
This modem is providing Internet connection from provider2 (say)
3> simple check_ping to modem IP can monitor the accessibility to both
the modem. BUT how can I check that the internet connection is really
provided by the modems. simple ping to yahoo.com can't solve the problem
as any one modem is used as default route at a particular time. How can
I check the internet is really present on the other modem not used as
default route ? In other words say eth1 is used as default route and the
traffic is going through ADSL modem 220BX. Then How can I check that the
internet connection is alive at eth2 ?
Many thanks in advanced.
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Joydeep Bakshi, Linux System Admin
Kolkatainfoservices Pvt Ltd,
23A Royd Street, Kolkata 700016, India
Work Phone 91 033 40014784
http://infoservices.in/
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