ADSL modem checking

[J. Bakshi]

Paul Weaver wrote:
> I don't have any pcs with default routes out of two network cards to
> test, but perhaps using "ping -I eth0 www.yahoo.co.uk" and "ping -I eth1
> www.yahoo.co.uk" would work?
>   

Hi Paul,

Thanks for your response. I have a script which actually change the
default route to other lan card when the present lan card i.e. the
modem connected with it not providing the internet.  The  command you
have mentioned is also check the internet forcefully from the lan card.

but it would be nice if check_ping could do the same.
thanks
> --
> Paul Weaver	
> Systems Development Engineer
> News Production Facilities, BBC News
> Work:	020 822 58109
> Room 1244  Television Centre,
> Wood Lane, London, W12 7RJ
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>
>
>   
>> -----Original Message-----
>> From: nagios-users-bounces at lists.sourceforge.net 
>> [mailto:nagios-users-bounces at lists.sourceforge.net] On Behalf 
>> Of J. Bakshi
>> Sent: 27 August 2008 12:13
>> To: nagios-users at lists.sourceforge.net
>> Subject: [Nagios-users] ADSL modem checking
>>
>>
>> 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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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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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Build the coolest Linux based applications with Moblin SDK & win great prizes
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