Single AS multiple Dirverse Providers

Mon Jun 10 18:05:16 UTC 2013

On Mon, Jun 10, 2013 at 10:08 AM, Patrick W. Gilmore <patrick at ianai.net>wrote:

> > however, providers a/b at site1 do not send us the two /24s from
> > site b..
>
> This is probably incorrect.
>
> The providers are almost certainly sending you the prefixes, but your
> router is dropping them due to loop detection.

As noted above, if your *provider* is running JunOS, that is
incorrect; by default, Juniper will not send routes out were
learned from the same ASN as the one to which the neighbor
is configured.
http://www.juniper.net/techpubs/software/junos/junos95/swconfig-routing/id-13225234.html#id-13255463

I've been bitten by this before.

Matt

> To answer your later question, this is the definition of 'standard' as it
> is written into the RFC.
>
> Use the allow-as-in style command posted later in this thread to fix your
> router.
>
> --
> TTFN,
> patrick
>
>
> On Jun 10, 2013, at 12:36 , "Dennis Burgess" <dmburgess at linktechs.net>
> wrote:
>
> > I have a network that has three peers, two are at one site and the third
> > is geographically diverse, and there is NO connection between the two
> > separate networks.
> >
> >
> >
> > Currently we are announcing several /24s out one network and other /24s
> > out the second network, they do not overlap.  To the internet this works
> > fine, however, providers a/b at site1 do not send us the two /24s from
> > site b..   We have requested them to, but have not seen them come in,
> > nor do we have any filters that would prohibit them from coming in.
> >
> >
> >
> > Is this normal?  Can we receive those routes even though they are from
> > our own AS?  What is the "best practice" in this case?
> >
> >
> >
> > Dennis Burgess, Mikrotik Certified Trainer Author of "Learn RouterOS-
> > Second Edition <http://www.wlan1.com/product_p/mikrotik%20book-2.htm> "
> >
> > Link Technologies, Inc -- Mikrotik & WISP Support Services
> >
> > Office: 314-735-0270 <tel:314-735-0270>  Website:
> > http://www.linktechs.net <http://www.linktechs.net/>  - Skype: linktechs
> > <skype:linktechs?call>
> >
> > -- Create Wireless Coverage's with www.towercoverage.com
> > <http://www.towercoverage.com/>  - 900Mhz - LTE - 3G - 3.65 - TV
> > Whitespace
> >
> >
> >
>
>
>