Hello,
We're a small ISP working on redesigning our network's topology and
the overall architecture before replacing the existing
infrastructure, which happens to be different variations of low cost
router-boards running Linux. The ultimate goal thus being to run
OpenBSD wherever we can.
A job on top of our list would be to to migrate the core routers.
Such solution would involve carp(4) and pfsync(4) -- hopefully making
them fully redundant and a lot more solid network appliances than
they currently are.
But we're having a tough time figuring out how BGP should operate.
In the existing scheme, an AS (autonomous system ) with 2 IP address
blocks (193.x.x.0/24 and 194.x.x.0/23) is what holds our networks
together.
Our two optical lines, namely [upstream0] and [upstream1] are
separated geographically (as illustrated in Fig. 1), themselves being
interconnected by a wireless link.
[upstream0] [upstream1]
| |
| |
[core0]---------(wireless)---------[core1]
|193.x.x.0/24 |194.x.x.0/23
| |
[clients] [clients]
Fig. 1
Question; Is it possible to make two BGP neighbors (one at core0 and
second at core1) by using only one AS? We could get a second AS, but
as we expect to have more networks around we would really like to set
it up by only using one AS, not bothering ripe.net every time we
expand the network. And yes, we plan to use OpenBGP.
Thanks,
Peter
