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routing with 2 upstreams issue

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r.tahina at moov

Nov 16, 2009, 5:10 AM

Post #1 of 4 (431 views)
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routing with 2 upstreams issue

Hi All,

I'm connected to 2 upstreams, is there any performance issue if
upload from 192.168.1.0/24 is via upstream 1 but download for this
class is from upstream 2 ?

BR
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dudepron at gmail

Nov 16, 2009, 8:11 AM

Post #2 of 4 (399 views)
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Re: routing with 2 upstreams issue [In reply to]

Only if the BW or quality of the 2 networks is an issue. Asymmetrical
routing happens a lot in the internet.

On Mon, Nov 16, 2009 at 08:10, RAZAFINDRATSIFA Rivo Tahina <r.tahina [at] moov
> wrote:

> Hi All,
>
> I'm connected to 2 upstreams, is there any performance issue if upload from
> 192.168.1.0/24 is via upstream 1 but download for this class is from
> upstream 2 ?
>
> BR
> _______________________________________________
> cisco-nsp mailing list cisco-nsp [at] puck
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>
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streiner at cluebyfour

Nov 16, 2009, 8:46 AM

Post #3 of 4 (395 views)
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Re: routing with 2 upstreams issue [In reply to]

On Mon, 16 Nov 2009, Aaron wrote:

> Only if the BW or quality of the 2 networks is an issue. Asymmetrical
> routing happens a lot in the internet.

Asymmetric routing is pretty much an unavoidable fact of life once your
packets leave your borders, but it is not 'bad'. It can make
troubleshooting connectivity issues more involved, but those issues
often need to be researched in both directions anyway.

jms
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pc.chiodi at gmail

Nov 16, 2009, 9:06 AM

Post #4 of 4 (400 views)
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Re: routing with 2 upstreams issue [In reply to]

Hi,

On Nov 16, 2:10 pm, RAZAFINDRATSIFA Rivo Tahina <r.tah...@moov.mg>
wrote:
> Hi All,
>
> I'm connected to 2 upstreams, is there any performance issue if
> upload from 192.168.1.0/24 is via upstream 1 but download for this
> class is from upstream 2 ?

I would be worried more about security issues than performance issues.
If you have stateful firewalls or other stateful tools they may lose
track about flows entering and exiting your network.
For example, you can find an overview about this topic here:
http://www.ciscopress.com/articles/article.asp?p=174313&seqNum=5

bye

--
http://piercarlochiodi.tel
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