[quagga-users 7759] Re: Equal Cost Multipath (ECMP) of OSPF routing

Erdenebayar Buriad bayar at atr.jp
Mon Nov 20 10:09:34 GMT 2006

Dear Andy

Thank you for information.
Today, I am going to try it.
Offcourse, I will inform to list about result.


----- Original Message ----- 
From: "Andrew J. Schorr"
To: "Erdenebayar Buriad"
Sent: Friday, November 17, 2006 10:49 PM
Subject: [quagga-users 7755] Re: Equal Cost Multipath (ECMP) of OSPF routing

> Hi,
> On Fri, Nov 17, 2006 at 04:46:17PM +0900, Erdenebayar Buriad wrote:
>> When I start a traffic (2 different flows) : flow-1 go on link-1 (or
>> link-2), flow-2 go on link-2 (or link-1).
>> But , after 600 or 1200 second (this time,only I identified), flows 
>> changed
>> the route. I want to keep first route (without any shift).
>> I am attached a graph of the shift of flows.
>> I want to know, Why flows shifting during the traffic?
> Try running this command:
>   cat /proc/sys/net/ipv4/route/secret_interval
> It's most likely set to 600.  It seems that the route cache
> is flushed every <secret_interval> seconds.  I don't see
> much documentation of this feature, but the kernel source
> code in net/ipv4/route.c seems to implement this behavior.
> So I guess you can try increasing that value.
> Regards,
> Andy
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