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Re: [LARTC] DGD patch not detecting dead gateway

from [Tom Lobato] [Permanent Link][Original]
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Subject: Re: [LARTC] DGD patch not detecting dead gateway
From: "Tom Lobato" <tomlobato@gmail.com>
Date: Sun, 28 Jan 2007 14:12:03 -0200
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Hi!


Manish Kathuria Wrote:

  The method I have adopted is to use a shell script which pings a
popular remote site 's IP (for example www.yahoo.com or
www.google.com) through each of the interfaces every 10 seconds. The
default multipath route is replaced by a single default gateway if
reply is not received for 4 consecutive tries from one of the links.
This is to avoid very frequent failovers. However, the link is treated
as live as soon as a  ping reply is received and the multipath route
is activated.
 
Now I'm using the ping options:

    ping -n -w 10 -c 2 -I $lnk1_dev $lnk1_pingtarget

But so I'm getting some false negatives. Can you show what ping options you use?




Tom Lobato



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