[c-nsp] BGP and IP

[Jay Hennigan]

On Tue, 14 Sep 2004, James Hampton wrote:

> We will soon be setting up a BGP session with GBLX, but are in the
> middle of an IP migration phase. We currently have an ARIN /19 which
> we are migrating to, but we have several other block in use that are
> from a previous provider(s) and are not Swiped to us. According to
> GBLX BGP policy we cannot advertise these old blocks.
> The basic situation I am in is this; we will be dual homed
> non-transit, we have 2 address types, arin assigned blocks and old
> blocks (which are not swiped to us but are being advertised through
> another link). There is no way that I can see to tell our routers to
> send just our arin block traffic to the GBLX edge and all other
> traffic out the other link.

You can use policy routing to do this.  It can be CPU-intensive depending
on platform and image, etc.

--
Jay Hennigan - CCIE #7880 - Network Administration - jay at west.net
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