[c-nsp] Application issue over ISP

[masood at nexlinx.net.pk]

Ivan has this similar article with an working example applicable in
real-life: http://www.nil.com/ipcorner/SmallSiteMultiHoming/

pelase read this article properly. might help you :)

If the above article does not work for you; could you please b more
specific about the issue like what is causing delay and what is the
precise topology of the logical network like protocols, media and
transmission.

Kind Regards,
Masood
Blogs: http://weblogs.com.pk/jahil/


> Gotcha.  I am familiar with using SLA to track a route, but there is still
> the issue of convergence within the ISPs.  We implemented a similar
> configuration in my environment using AS prepend on the least favored
> link,
> but it takes several minutes to converge "globally."
>
> Thanks for the link.
>
> On Mon, Dec 14, 2009 at 8:52 PM, <masood at nexlinx.net.pk> wrote:
>
>> have a look at the following URL..
>>
>> http://www.ciscoblog.com/archives/2008/08/dynamic_failove.html
>>
>> Kind Regards,
>> Masood
>> Blogs: http://weblogs.com.pk/jahil/
>>
>>
>> > Out of curiosity, what is ping based routing?
>> >
>> > 02 PM, jack daniels <jckdaniels12 at gmail.com> wrote:
>> >
>> >> Hi ,
>> >>
>> >> I can run any protocol , cant run tunnel as other side is client who
>> >> cant
>> >> make changes
>> >>
>> >>
>> >>
>> >>
>> >> On Sun, Dec 13, 2009 at 10:23 PM, Vincent C Jones <
>> >> v.jones at networkingunlimited.com> wrote:
>> >>
>> >> >  On Sun, 2009-12-13 at 21:06 +0530, jack daniels wrote:
>> >> > > I have a scenario -
>> >> > >
>> >> > > CE -------ISP1
>> >> > > |
>> >> > > |
>> >> > > |
>> >> > > ISP2
>> >> > >
>> >> > > users behind CE connect to remote application ,
>> >> > > Now issue is if ISP1 LINK or ISP1 goes down I have times less
>> than 4
>> >> sec
>> >> > > for application to go via other link so that users are not
>> imacted.
>> >> > > So can there be any solution for traffic to converge before 2
>> >> request
>> >> > > timeouts , so that my application users are not impacted.
>> >> >
>> >> > There are a wide variety of solutions, but whether or not they will
>> >> work
>> >> > for you depends very much on both the specifics of the application
>> and
>> >> > how you connect to your ISPs. Classic dual-homed BGP is not one of
>> the
>> >> > solutions given your timeout requirements. "Ping based routing" may
>> do
>> >> > the job if your user application can tolerate changing public IP
>> >> > addresses. If you have a presence at both ends of the public
>> internet
>> >> > connection, you could also look at tunnel based solutions.
>> >> >
>> >> > --
>> >> > Vincent C. Jones
>> >> > Networking Unlimited, Inc.
>> >> > Phone: +1 201 568-7810
>> >> > V.Jones at NetworkingUnlimited.com
>> >> >
>> >> >
>> >> >
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