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Service Providers behaviour for dual homed enterprises
- Subject: Service Providers behaviour for dual homed enterprises
- From: clinton at scripty.com (Clinton Work)
- Date: Thu, 24 Sep 2015 01:16:59 -0600
- In-reply-to: <CALZ5zxgNp5FOJAen-3pKT0m6r1Oz=Ep6-BtK9GjOqUL0b6BQ+Q@mail.gmail.com>
- References: <CALZ5zxgNp5FOJAen-3pKT0m6r1Oz=Ep6-BtK9GjOqUL0b6BQ+Q@mail.gmail.com>
Many transit providers support BGP communities to modify how your
announced routes are treated within their network. A quick search shows
that AT&T supports BGP community 7018:70 to lower the default local-pref
100 down to 70 (below peer routes). If you tag your AT&T announced
routes with BGP community 7018:70, then even AT&T customers should
prefer to enter via Verizon.
Clinton.
On Wed, Sep 23, 2015, at 03:38 PM, Jason Bullen wrote:
> So if my research is correct, the internet prefers Verizon UNLESS they
> are
> a direct AT&T customer then they would use the AT&T circuit.
> Is this a standard practice that I should assume to encounter?
>
> Thanks in advance