From: vikrant <vikrant@saysnetsoft.com>
To: vikrant <vikrant@saysnetsoft.com>
Cc: netfilter@lists.netfilter.org
Subject: Re: Two interfaces - question
Date: Wed, 04 Jan 2006 18:27:11 +0530 [thread overview]
Message-ID: <43BBC627.5090008@saysnetsoft.com> (raw)
In-Reply-To: <43BBBFD5.1090609@saysnetsoft.com>
vikrant wrote:
> Marcin Giedz wrote:
>
>> Dnia środa, 4 stycznia 2006 12:16, vikrant napisał:
>>
>>
>>> Marcin Giedz wrote:
>>>
>>>
>>>> Hello,
>>>>
>>>> In my INtel Blade server I have two ethernet interfaces: eth0,
>>>> eth1. Now
>>>> only one is working, the another one is not configured. However I'd
>>>> like
>>>> to have something like dynamic routing: if one interfaces is down the
>>>> second one if
>>>>
>>>
>>> i am getting little confused when u say interface goes down please
>>> explain .
>>>
>>
>> OK - very spimle. Let's say that network cable is damage or someone
>> has disconnected cable from the card. If one cable is unplagged
>> (eth0) the second one (eth1) becames master.
>>
>>
>>
>>
>>> what do u mean from interface does down whether interface card become
>>> inactive or network cable get damage or ISP connection goes down please
>>> clarify it .
>>>
>>>
>>>
>>>> up. If first returns up the second one goes down.
>>>>
>>>> Does anyone know how can I do this?
>>>>
>>>> Thx,
>>>> Marcin
>>>>
>>>
>>> Thanks
>>> Vikrant
>>>
>>
>>
>>
>>
>>
> I am considering that both the interfaces are using as external
> interface.
> I don't know the right way to track the connectivity ,I think Routing
> Protocol e.g BGP,RIP,IGP or OSPF are the solution for this kind of
> problem.
> But ,what i did to do this ,write a script that ping the ISP DNS and
> set the status value (variable)according to packet loss % and then
> take action according to the status value , ifdown eth0 -> ifup eth1
> -> make changes to iptables rules , and vice-versa.
> add the script in crontab so that it runs after a certain time period
> and perform the checking.
> I am just a beginner so please do not consider it as the final solution.
> Please know me if u find the right ans to ur ques.
> and sorry for bad english.
>
> Thanks
> Vikrant
>
>
>
If your problem is just limited to plugin or plugout of cable then u can
use ifplugd as Boryan yotov suggests but by this u can not check whether
ISP line in up or down.
link for ifplugd
http://www.stud.uni-hamburg.de/users/lennart/projects/ifplugd/
next prev parent reply other threads:[~2006-01-04 12:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-04 10:03 Two interfaces - question Marcin Giedz
2006-01-04 11:16 ` vikrant
2006-01-04 11:36 ` Marcin Giedz
2006-01-04 12:02 ` Boryan Yotov
2006-01-04 12:30 ` vikrant
2006-01-04 12:57 ` vikrant [this message]
2006-01-04 19:35 ` Jesus M. Salvo Jr.
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