[c-nsp] bgp maximum-paths

Chris Gotstein chris at uplogon.com
Wed Apr 14 23:03:18 EDT 2010


I've looked into the communities option, but only Qwest supports them, 
my other provider doesn't support communities at this time.  Though the 
Qwest link is the one i want to push more traffic to, so maybe i can 
just use their communities and see what happens.

On 4/14/2010 7:56 PM, Michael K. Smith wrote:
> On 4/14/10 2:48 PM, "Chris Gotstein"<chris at uplogon.com>  wrote:
>
>> It's inbound i'm mostly concerned with.  I'm taking full routes from
>> both providers.  Paths to both a relatively equal, so the path with the
>> lowest ID is winning, causing it to be overloaded.
>>
>> ---- ---- ---- ----
>> Chris Gotstein, Sr Network Engineer, UP Logon/Computer Connection UP
>> http://uplogon.com | +1 906 774 4847 | chris at uplogon.com
>>
> Ugh.  There aren't very many subtle ways to do inbound shaping.  The hammer
> approach is as-path prepend, and you could do it more granularly via
> route-maps.  As an example, match access-list 100 prepend once, match
> access-list 200, prepend twice, etc.
>
> Another way to approach it is to ask your upstream providers if they have
> communities you can match to set their local preference on your behalf.
>
> If you're email is your AS, then it looks like you have Qwest and a more
> local provider.
>
> Qwest communities can be found at http://onesc.net/communities/as209/.  I
> don't see a listing for AS46208 so you may have to ask them.
>
> Regards,
>
> Mike
>

-- 
Chris Gotstein
Sr Network Engineer
UP Logon/Computer Connection UP
500 N Stephenson Ave
Iron Mountain, MI 49801
Phone: 906-774-4847
Fax: 906-774-0335
chris at uplogon.com


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